Bosch (7975) HR9BC Super Plus Spark Plug, Pack of 1
Heavy-duty yttrium-enhanced copper core center electrode for superior reliability and increased resistance to spark erosion for a 50% longer performance life vs. even OE plugs
Angular, five-ribbed insulator design prevents misfire due to current leakage
Nickel-plated rolled threads provides complete anti-seize and corrosion protection
Metal glass fused resistor maximizes interference suppression
Product Review
Product Description
Bosch Super Plus spark plug has a premium copper core plus yttrium enhanced center electrode providing extended performance life over conventional copper core spark plugs.
Product Details
Bosch (7975) HR9BC Super Plus Spark Plug, Pack of 1
This review is from: Bosch (7975) HR9BC Super Plus Spark Plug, Pack of 1 (Misc.)
For my situation,,,and my engine design,,this is the only spark plug that will work.I have several heat ranges of the same plug so I can vary the ammount of cyl.heat needed.This spark plug also allows me to modify it without creating other issues.
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