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Double Platinum
Double Platinum Spark Plugs feature platinum-to-platinum firing. Virtually eliminates gap erosion, reduces misfires, and provides 100K mile durability. It's the superior-performing spark plug providing preferred technology for DIS engines.

Spark Plug Type Performance Differences

How to Install Autolite Spark Plugs

Autolite Spark Plug Types
Spark Plug Firing Tips Tech Info

AUTOLITE Warranty Information:
2 years for Copper; 4 years for Platinum; 5 years for Double Platinum; Limited Lifetime years for Iridium XP; 5 years for Professional Series Wire Sets
Warranty Details