Plugs you can count on, the Champion Spark Plugs we offer boast all the features that make Champion an industry leader. Plugs feature a triple-coated shell for excellent corrosion resistance, and a triple seal assembly that is the strongest in the industry. Precision rolled threads conform to all manufacturers’ specifications while a copper core optimizes performance and plug life.

Specifications:


Thread Size:	14mm
Thread Reach:	0.500 Inch
Hex Size:	21mm (13/16 Inch)
Preset Gap:	0.56mm to 0.71mm (0.025 to 0.640 inch)
Installed Height:	2.24 inch
Heat Range:	78
Insulator Material:	Zirconia
Center Electrode Tip Material:	Nickel
Center Electrode Core Material:	Nickel-Copper Alloy
Ground Electrode Core Material:	Nickel-Copper Alloy
Ground Electrode Tip Material:	Copper
Ground Electrode Tip Design:	J-Gap
Resistor Plug:	Yes
Ribbed Core Nose:	No
Num. of Ground Electrodes:	1
Electrical Terminal Type:	Non-Removable Nut

Triple-coated shell offers excellent corrosion resistance, resists overheating under heavy engine loads
Triple-seal assembly is strongest in industry
Precision-rolled threads conform to all manufacturer’s specs
Copper core optimizes performance and plug life
Select plug types offer RFI (Radio Frequency Interference) suppression to protect sensitive electronics

SKU# QL78YC

Fits:

This product is universal and applies to automotive, marine and small-engine applications.

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Champion New Spark Plug, QL78YC

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