What the best spark plugs to use in 02 grand prix gt Pontiac?

The best spark plugs for a 2002 Pontiac Grand Prix GT depend slightly on the engine (3.8L Series II is the most common). However, NGK Iridium IX (specifically the IFR6A11) are generally recommended and often cited as a great upgrade. They're known for their longevity and improved performance compared to standard copper plugs.

Other good choices often mentioned include:

* ACDelco 41-910: This is a good quality replacement that's likely a close match to the factory specification. It's a less expensive option than the iridium plugs.

* Denso Iridium TT: Another strong contender in the iridium plug category. Similar performance and lifespan to NGK Iridium IX.

Crucially: Always check your owner's manual. It will specify the correct spark plug type and gap. Using the wrong type of spark plug can damage your engine. If the manual doesn't specify a brand, the heat range listed will help you find a suitable replacement from various brands.

Before buying, double-check the specific engine code on your vehicle to ensure you're getting the right plugs. A parts store employee can assist in this process using your VIN. They'll be able to look up the exact specifications for your car.