That said, AC Delco 41-985 (or its equivalent) is frequently recommended and considered a reliable replacement that matches the original equipment. This is a common and readily available choice.
Other reputable brands that offer suitable replacements include:
* NGK: Look for their equivalent to the AC Delco 41-985. You'd need to check their cross-reference chart.
* Champion: Similar to NGK, use their cross-reference chart to find the equivalent.
Important Considerations:
* Heat Range: The heat range is crucial. Using a plug with an incorrect heat range can lead to overheating or fouling. Sticking with the equivalent of the original AC Delco 41-985 is the safest bet unless you have a specific performance modification requiring a different heat range.
* Gap: The spark plug gap should be set correctly. This is often specified in your owner's manual or on the spark plug packaging. Using the wrong gap can hinder performance and even damage your engine.
* Material: Platinum or iridium plugs generally last longer than standard copper plugs but are more expensive. The original equipment likely used copper. Platinum or iridium are fine upgrades if you're willing to pay the extra cost.
Recommendation: Start with the AC Delco 41-985. If you have trouble finding them, consult an auto parts store professional with your vehicle's information (Year, Make, Model, Engine). They can use their cross-reference systems to find the correct equivalent from other brands. They can also advise on gap settings.
