Sourced reference table
Vehicle Spark Plug Gap by Year
Compare spark plug gap across published engines and model years. Every value links to its source-backed service sheet.
Spark plug gap chart
Choose your year and engine before using a gap or part number. The reviewed 2018 Toyota examples below include the manual’s instruction to leave the iridium plug gap unchanged.
205 of 205 configurations match. Open the vehicle page to check its application.
| Plug part numbers / instructions | ||||
|---|---|---|---|---|
| 2001 GMC Sierra 1500 | 4.3L V6 4-speed automatic RWD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 4.3L V6 (VIN W). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2001 GMC Sierra 1500 | 4.3L V6 5-speed manual RWD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 4.3L V6 (VIN W). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2001 GMC Sierra 1500 | 4.8L V8 4-speed automatic RWD / 4.8L V8 (VIN V) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 4.8L V8 (VIN V). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2001 GMC Sierra 1500 | 4.8L V8 5-speed manual RWD / 4.8L V8 (VIN V) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 4.8L V8 (VIN V). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2001 GMC Sierra 1500 | 5.3L V8 4-speed automatic RWD / 5.3L V8 (VIN T) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 5.3L V8 (VIN T). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2001 GMC Sierra 1500 | 4.3L V6 4-speed automatic 4WD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 4.3L V6 (VIN W). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2001 GMC Sierra 1500 | 4.3L V6 5-speed manual 4WD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 4.3L V6 (VIN W). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2001 GMC Sierra 1500 | 4.8L V8 4-speed automatic 4WD / 4.8L V8 (VIN V) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 4.8L V8 (VIN V). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2001 GMC Sierra 1500 | 4.8L V8 5-speed manual 4WD / 4.8L V8 (VIN V) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 4.8L V8 (VIN V). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2001 GMC Sierra 1500 | 5.3L V8 4-speed automatic 4WD / 5.3L V8 (VIN T) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 5.3L V8 (VIN T). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2001 GMC Sierra 1500 | 6.0L V8 4-speed automatic 4WD / 6.0L V8 (VIN U) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm (0.060 in) for the 6.0L V8 (VIN U). | 2001 GMC Sierra Owner Manual — Engine specifications, PDF p. 422 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 4.3L V6 4-speed automatic RWD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 4.3L V6 5-speed manual RWD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 4.8L V8 4-speed automatic RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 4.8L V8 5-speed manual RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 5.3L V8 4-speed automatic RWD / 5.3L V8 (VIN T or Z) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN T or Z). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 6.0L V8 4-speed automatic RWD / 6.0L V8 (VIN U or N) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U or N). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 5.3L V8 4-speed automatic 4WD / 5.3L V8 (VIN T or Z) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN T or Z). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 4.3L V6 4-speed automatic 4WD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 4.3L V6 5-speed manual 4WD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 4.8L V8 4-speed automatic 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 4.8L V8 5-speed manual 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 Chevrolet Silverado 1500 | 6.0L V8 4-speed automatic 4WD / 6.0L V8 (VIN U or N) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U or N). | 2004 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 522 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 4.3L V6 4-speed automatic RWD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 4.3L V6 5-speed manual RWD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 4.8L V8 4-speed automatic RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 4.8L V8 5-speed manual RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 5.3L V8 4-speed automatic RWD / 5.3L V8 (VIN T) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN T). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 6.0L V8 4-speed automatic RWD / 6.0L V8 (VIN U) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 5.3L V8 4-speed automatic 4WD / 5.3L V8 (VIN T) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN T). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 4.3L V6 4-speed automatic 4WD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 4.3L V6 5-speed manual 4WD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 4.8L V8 4-speed automatic 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 4.8L V8 5-speed manual 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2004 GMC Sierra 1500 | 6.0L V8 4-speed automatic 4WD / 6.0L V8 (VIN U) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U). | 2004 GMC Sierra Owner Manual — Engine specifications, PDF p. 534 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 4.3L V6 4-speed automatic RWD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 4.3L V6 5-speed manual RWD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 4.8L V8 4-speed automatic RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 4.8L V8 5-speed manual RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 5.3L V8 4-speed automatic RWD / 5.3L V8 (VIN T or Z) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN T or Z). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 6.0L V8 4-speed automatic RWD / 6.0L V8 (VIN U or N) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U or N). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 5.3L V8 4-speed automatic 4WD / 5.3L V8 (VIN T or Z) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN T or Z). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 4.3L V6 4-speed automatic 4WD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 4.3L V6 5-speed manual 4WD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 4.8L V8 4-speed automatic 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 4.8L V8 5-speed manual 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 Chevrolet Silverado 1500 | 6.0L V8 4-speed automatic 4WD / 6.0L V8 (VIN U or N) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U or N). | 2005 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 531 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 4.3L V6 4-speed automatic RWD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 4.3L V6 5-speed manual RWD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 4.8L V8 4-speed automatic RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 4.8L V8 5-speed manual RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 5.3L V8 4-speed automatic RWD / 5.3L V8 (VIN Z or T) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN Z or T). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 6.0L V8 4-speed automatic RWD / 6.0L V8 (VIN U or N) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U or N). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 5.3L V8 4-speed automatic 4WD / 5.3L V8 (VIN Z or T) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN Z or T). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 4.3L V6 4-speed automatic 4WD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 4.3L V6 5-speed manual 4WD / 4.3L V6 (VIN W) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN W). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 4.8L V8 4-speed automatic 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 4.8L V8 5-speed manual 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2005 GMC Sierra 1500 | 6.0L V8 4-speed automatic 4WD / 6.0L V8 (VIN U or N) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U or N). | 2005 GMC Sierra Owner Manual — Engine specifications, PDF p. 527 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 4.3L V6 4-speed automatic RWD / 4.3L V6 (VIN X) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN X). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 4.3L V6 5-speed manual RWD / 4.3L V6 (VIN X) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN X). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 4.8L V8 4-speed automatic RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 4.8L V8 5-speed manual RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 5.3L V8 4-speed automatic RWD / 5.3L V8 (VIN Z or T) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN Z or T). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 6.0L V8 4-speed automatic RWD / 6.0L V8 (VIN U or N) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U or N). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 5.3L V8 4-speed automatic 4WD / 5.3L V8 (VIN Z or T) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN Z or T). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 4.3L V6 4-speed automatic 4WD / 4.3L V6 (VIN X) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN X). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 4.3L V6 5-speed manual 4WD / 4.3L V6 (VIN X) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN X). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 4.8L V8 4-speed automatic 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 4.8L V8 5-speed manual 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 Chevrolet Silverado 1500 | 6.0L V8 4-speed automatic 4WD / 6.0L V8 (VIN U or N) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U or N). | 2006 Chevrolet Silverado Owner Manual — Engine specifications, PDF p. 536 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 4.3L V6 4-speed automatic RWD / 4.3L V6 (VIN X) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN X). | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 4.3L V6 5-speed manual RWD / 4.3L V6 (VIN X) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN X). | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 4.8L V8 4-speed automatic RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 4.8L V8 5-speed manual RWD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 5.3L V8 4-speed automatic RWD / 5.3L V8 | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8. | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 6.0L V8 4-speed automatic RWD / 6.0L V8 (VIN U or N) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U or N). | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 5.3L V8 4-speed automatic 4WD / 5.3L V8 | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8. | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 4.3L V6 4-speed automatic 4WD / 4.3L V6 (VIN X) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN X). | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 4.3L V6 5-speed manual 4WD / 4.3L V6 (VIN X) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN X). | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 4.8L V8 4-speed automatic 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 4.8L V8 5-speed manual 4WD / 4.8L V8 (VIN V) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN V). | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2006 GMC Sierra 1500 | 6.0L V8 4-speed automatic 4WD / 6.0L V8 (VIN U or N) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 6.0L V8 (VIN U or N). | 2006 GMC Sierra Owner Manual — Engine specifications, PDF p. 547 Accessed 2026-10-09 |
| 2007 Toyota Corolla | 1.8L automatic / 1.8L 4-cylinder | 0.043 in / 1.1 mm | DENSO SK16R11, NGK IFR5A11 Manual gives spark plug gap 1.1 mm (0.043 in) for the 1.8 L engine. | 2007 Toyota Corolla Owner's Manual (OM12B32U) — service specifications, Spark plug gap, PDF p. 89 Accessed 2026-10-09 |
| 2007 Toyota Corolla | 1.8L manual / 1.8L 4-cylinder | 0.043 in / 1.1 mm | DENSO SK16R11, NGK IFR5A11 Manual gives spark plug gap 1.1 mm (0.043 in) for the 1.8 L engine. | 2007 Toyota Corolla Owner's Manual (OM12B32U) — service specifications, Spark plug gap, PDF p. 89 Accessed 2026-10-09 |
| 2007 Toyota RAV4 | 2.4L 4-cylinder automatic FWD / 2.4L L4 2AZ-FE | 0.043 in / 1.1 mm | DENSO SK20R11, NGK IFR6A11 Manual gives 1.1 mm (0.043 in) for the 2.4 L 2AZ-FE. | 2007 Toyota RAV4 Owner's Manual (OM42662U, dealer-hosted copy) — Spark plug gap, PDF p. 439 Accessed 2026-10-09 |
| 2007 Toyota RAV4 | 3.5L V6 automatic FWD / 3.5L V6 2GR-FE | 0.043 in / 1.1 mm | DENSO FK20HR11 Manual gives 1.1 mm (0.043 in) for the 3.5 L 2GR-FE. | 2007 Toyota RAV4 Owner's Manual (OM42662U, dealer-hosted copy) — Spark plug gap, PDF p. 439 Accessed 2026-10-09 |
| 2007 Toyota RAV4 | 2.4L 4-cylinder automatic AWD / 2.4L L4 2AZ-FE | 0.043 in / 1.1 mm | DENSO SK20R11, NGK IFR6A11 Manual gives 1.1 mm (0.043 in) for the 2.4 L 2AZ-FE. | 2007 Toyota RAV4 Owner's Manual (OM42662U, dealer-hosted copy) — Spark plug gap, PDF p. 439 Accessed 2026-10-09 |
| 2007 Toyota RAV4 | 3.5L V6 automatic AWD / 3.5L V6 2GR-FE | 0.043 in / 1.1 mm | DENSO FK20HR11 Manual gives 1.1 mm (0.043 in) for the 3.5 L 2GR-FE. | 2007 Toyota RAV4 Owner's Manual (OM42662U, dealer-hosted copy) — Spark plug gap, PDF p. 439 Accessed 2026-10-09 |
| 2008 Toyota Corolla | 1.8L automatic / 1.8L 4-cylinder | 0.043 in / 1.1 mm | DENSO SK16R11, NGK IFR5A11 Manual gives spark plug gap 1.1 mm (0.043 in) for the 1.8 L engine. | 2008 Toyota Corolla Owner's Manual (OM12B28U) — service specifications, Spark plug gap, PDF p. 81 Accessed 2026-10-09 |
| 2008 Toyota Corolla | 1.8L manual / 1.8L 4-cylinder | 0.043 in / 1.1 mm | DENSO SK16R11, NGK IFR5A11 Manual gives spark plug gap 1.1 mm (0.043 in) for the 1.8 L engine. | 2008 Toyota Corolla Owner's Manual (OM12B28U) — service specifications, Spark plug gap, PDF p. 81 Accessed 2026-10-09 |
| 2008 Toyota RAV4 | 2.4L 4-cylinder automatic FWD / 2.4L L4 2AZ-FE | 0.043 in / 1.1 mm | DENSO SK20R11, NGK IFR6A11 Manual gives 1.1 mm (0.043 in) for the 2.4 L 2AZ-FE. | 2008 Toyota RAV4 Owner's Manual (OM42726U, dealer-hosted copy) — Spark plug gap, PDF p. 429 Accessed 2026-10-09 |
| 2008 Toyota RAV4 | 3.5L V6 automatic FWD / 3.5L V6 2GR-FE | 0.043 in / 1.1 mm | DENSO FK20HR11 Manual gives 1.1 mm (0.043 in) for the 3.5 L 2GR-FE. | 2008 Toyota RAV4 Owner's Manual (OM42726U, dealer-hosted copy) — Spark plug gap, PDF p. 429 Accessed 2026-10-09 |
| 2008 Toyota RAV4 | 2.4L 4-cylinder automatic AWD / 2.4L L4 2AZ-FE | 0.043 in / 1.1 mm | DENSO SK20R11, NGK IFR6A11 Manual gives 1.1 mm (0.043 in) for the 2.4 L 2AZ-FE. | 2008 Toyota RAV4 Owner's Manual (OM42726U, dealer-hosted copy) — Spark plug gap, PDF p. 429 Accessed 2026-10-09 |
| 2008 Toyota RAV4 | 3.5L V6 automatic AWD / 3.5L V6 2GR-FE | 0.043 in / 1.1 mm | DENSO FK20HR11 Manual gives 1.1 mm (0.043 in) for the 3.5 L 2GR-FE. | 2008 Toyota RAV4 Owner's Manual (OM42726U, dealer-hosted copy) — Spark plug gap, PDF p. 429 Accessed 2026-10-09 |
| 2009 GMC Sierra 1500 | 4.3L V6 4-speed automatic RWD / 4.3L V6 (VIN X) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN X). | 2009 GMC Sierra Owner Manual — Engine specifications, PDF p. 543 Accessed 2026-10-09 |
| 2009 GMC Sierra 1500 | 4.3L V6 4-speed automatic 4WD / 4.3L V6 (VIN X) | 0.06 in / 1.52 mm | Not published Manual gives spark plug gap 1.52 mm for the 4.3L V6 (VIN X). | 2009 GMC Sierra Owner Manual — Engine specifications, PDF p. 543 Accessed 2026-10-09 |
| 2009 GMC Sierra 1500 | 4.8L V8 4-speed automatic RWD / 4.8L V8 (VIN C) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN C). | 2009 GMC Sierra Owner Manual — Engine specifications, PDF p. 543 Accessed 2026-10-09 |
| 2009 GMC Sierra 1500 | 4.8L V8 4-speed automatic 4WD / 4.8L V8 (VIN C) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 4.8L V8 (VIN C). | 2009 GMC Sierra Owner Manual — Engine specifications, PDF p. 543 Accessed 2026-10-09 |
| 2009 GMC Sierra 1500 | 5.3L V8 4-speed automatic RWD / 5.3L V8 (VIN 0, 3, J or M) | 0.04 in / 1.01 mm | Not published Manual gives spark plug gap 1.01 mm for the 5.3L V8 (VIN 0, 3, J or M). | 2009 GMC Sierra Owner Manual — Engine specifications, PDF p. 543 Accessed 2026-10-09 |
Spark plug gap, engine variant and part numbers
Search the chart by make, model, engine or documented plug part number. Gap is shown in inches; millimeters are included where that unit has been checked directly in the manufacturer document. A turbocharged engine and a naturally aspirated engine in the same model may use different plugs or gaps.
A listed gap is a reference specification, not permission to adjust a plug. The reviewed 2018 Toyota Camry, Corolla and gasoline RAV4 manuals specify iridium-tipped plugs and instruct owners to leave the gap unchanged. Check the instructions for your exact application; this note does not establish a rule for every plug in the chart.
Match the documented engine and plug specification before purchasing. This chart covers the published passenger-vehicle configurations, not Toyota forklifts, industrial engines or modified-engine tuning. Open the vehicle page and manufacturer document when your application is missing or uncertain.
Frequently asked questions
- Can I select a spark plug just by matching its gap?
- No. The gap does not identify the plug's complete design or application. Match the documented part specification and engine first.
- Where can I see the complete vehicle specifications?
- Open a year and model in the table to view its service specifications, EPA MPG, fuel-cost calculator, recall campaigns and safety ratings together.
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