• Platinum center electrode, heat-fused into an extended insulator Reaches self-cleaning temperature only seconds after starting
• Tapered, yttrium-enhanced v-profile ground electrode Extends service life by 25% vs. original Bosch Platinum, reduces electrode temperature, and improves access to air/fuel mixture
• Nickel-plated rolled threads For complete anti-seize and corrosion protection
• Lower ignition voltage requirements vs. other plug designs for reliable cold weather starts and superior operation under all driving conditions

Which BOSCH Spark Plug Is Right For You?

Material / Series	Lifespan / Durability	Performance / Ignitability	Efficiency / Fuel Economy
Copper / Nickel	★★	★
Platinum	★★★★	★★★★	★★
Double Platinum	★★★★★	★★★	★★
Iridium	★★★★★★	★★★★★	★★★
Double Iridium	★★★★★★★	★★★★★	★★★
Double Iridium Pin-to-Pin	★★★★★★★	★★★★	★★★

Bosch guarantees you will feel improved performance in your vehicle when using any of Bosch OE Fine Wire Spark Plugs (Double Iridium, Double Iridium Pin-to-Pin, Double Platinum and Platinum). However, if you do not experience quicker starts, smoother acceleration and improved fuel efficiency, you can return the plugs with a dated sales receipt and Bosch will refund the purchase price of the spark plugs.

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