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PLATINUM PLUS
Platinum core technology provides quicker starts, smoother acceleration, and improved fuel efficiency.

Features & Benefits:
  • 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
Copper
★★
Platinum
Platinum
★★★★ ★★★★ ★★
Double Platinum
Double Platinum
★★★★★ ★★★ ★★
Iridium
Iridium
★★★★★★ ★★★★★ ★★★
Double Iridium
Double Iridium
★★★★★★★ ★★★★★ ★★★
Double Iridium Pin-to-Pin
Double Iridium Pin-To-Pin
★★★★★★★ ★★★★ ★★★
Bosch OE-Fine Wire Performance Guarantee

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.

PLATINUM
Offer extends for four (4) years or for the manufacturer’s recommended spark plug change interval as indicated in the owner’s manual -- whichever occurs first.
Learn More
4 YEAR
PERFORMANCE
GUARANTEE
Additional Resources

Diagram of Proper Torquing
Spark Plug Condition Identification
Spark Plug Gap Illustrations
Spark Plug Temperature Curves-Heat Range
Technical Bulletin for 5.4L 2004-2005 Ford F-150, Expedition, Super Duty & Lincoln Navigator
OEM / Interchange Numbers: 4205

Warranty Information:
12 Months Satisfaction Guarantee for Double Iridium, Double Platinum, and Platinum Spark Plugs Only
Warranty Details