BOSCH
More Information for BOSCH 7556
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BOSCH 7556  
$1.23
Price
$0.00
Core
+ Sold in packs of 1x1
Pack
$1.23
Total
(Only 1 Remaining)
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Bosch conventional Nickel-Copper Spark Plugs are designed to deliver performance and value. Heavy-duty yttrium-enhanced nickel center electrode with copper core provides a longer lasting copper core spark plug. Engineered to meet or exceed Original Equipment specifications for nickel-copper core spark plugs.

Features & Benefits:
  • Heavy-duty yttrium enhanced nickel-copper center electrode ensures superior reliability and durability for up to 50% longer performance life vs. standard copper plugs
  • Copper core provides broader heat range to resist pre-ignition and fouling
  • Nickel-plated rolled threads provide superior resistance to corrosion and do not require anti-seize - saving time
  • Angled, ribbed insulator design prevents misfire due to flash-over
  • Metal glass fused resistor maximizes interference suppression
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: 3923

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