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Champion Plug Number RY4C Spark Plug - 978

Part #:

978

Line:

CHP

Champion Plug Number RY4C Spark Plug

2 Year LIMITED WARRANTY

Metallurgy:   Copper

Service Number:   RY4C

Center Electrode Tip Material:   Nickel

Ground Electrode Tip Material:   Nickel

Heat Range:   4

Thread Reach (in):   0.375 Inch

Seat:   Gasket

Thread Size:   M10

Hex Size (mm):   15mm

Hex Size (in):   5/8 Inch

Preset Gap (in):   0.025 Inch

Preset Gap (mm):   0.64mm

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