item(s) totaling $
See if this part fits a specific vehicle.
|This product doesnt fit any of your saved vehicles||Check Fit for another vehicle|
|Electrode Core Material:||Copper|
|Electrode Tip Material:||0.5mm Iridium|
|Ground Strap Quantity:||1|
|Insulator Type:||Purified Alumina|
|Manufacturer Heat Range:||16|
|Spark Plug Reach:||.708 in|
|Spark Plug Seat Type:||Tapered|
|Spark Plug Thread Size:||14 mm|
|Tip Configuration:||0.5mm Iridium|
|Type:||Iridium Long Life|
|Wrench Diameter:||5/8 in|
Do you have questions about this product?
Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.
Q:Do these plug need to be gapped and what is the gap for my 1999 Camaro SS 5.7
A:Hi Jose, I'm glad to assist you! This Denso ZTJ16R10 Iridium Long Life (Gm) Spark Plug - Part No. 5090 is pre-gapped at 0.039 inch from the factory. However, the fact remains that the gap must be adjusted for the vehicle that the spark plug is intended for. Those with modified engines must remember that a modified engine with higher compression or forced induction will typically require a smaller gap settings.
Q:Are you able to/ do you have to gap these plugs?
A:Hi J, happy to assist you! This Denso spark plug traditionally leaves the factory pre-gapped for their most popular application. However, a plug may fit hundreds of engines, from cars to golf carts. Gapping the plugs to your engine’s specifications is important to prevent pre-ignition, detonation, fouling and poor fuel economy. Even if the preset gap matches that required by your engine, it is always good practice to physically check the Gap as it may have shifted during transportation.