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More Information for BOSCH HR9HC0
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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		 ★★★★★★★ ★★★★ ★★★
Additional Resources

Diagram of Proper Torquing
Spark Plug Condition Identification
Spark Plug Gap Illustrations
Spark Plug Temperature Curves-Heat Range
OEM / Interchange Numbers: 5144

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