Name: Champion 821 Champion Copper SME
SKU: 821
Price: 1.7 USD
Availability: InStock

CHAMPION part description

Cut back ground electrode for small block Chevy, Ford and select marine applications. The ground electrode is cut back from the center electrode 0.40". The ground electrode face is concave around the center electrode to provide a constant gap. Constructed with a nickel shell for faster heat dissipation and copper core or double copper (when noted) for further heat removal, all are non-resistor except where noted with special Q-type resistor.

14mm Thread Size
12.7mm (1/2") Reach
13/16" (20.6mm) Hex Size
Gasket Seat
Non-Resistor
Cut Back Ground w/ Modified Gap
Marine Plug
Heat Range 77

Product Description

Copper Plus Small Engine Spark Plug L77JC4 Carton of 4

Application Summary

POWERSPORT

Features & Benefits

Copper Plus - Dependable Performance and Durability
OE type replacement plug
Resists fouling
Copper core center electrode allows for accurate control of heat range for longer life
Superior corrosion resistance
Built to ISO and SAE standards for proven performance

Product Attributes

Ground Electrode Core Material	Nickel
Washer Included	Yes
Electrical Terminal Type	Non-Removable Nut
Center Electrode Tip Material	Nickel
Pre-Gap Size	0.030 IN
Ground Electrode Quantity	1
Hex Size	0.813 IN
Manufacturer Heat Range	77
Seat Type	Flat
Reach	0.5 IN
Thread Diameter	0.551 IN
Resistor Type	No
9507	Hex
9745	Crush
9746	No
Center Electrode Diameter (inch)	0.1 IN
Classification	Champion Copper Plus Small Engine
Ground Electrode Material	Nickel Copper Alloy
Installed Height (inch)	2.24 IN
Part Description	Spark Plug
Plug Type	L77JC4
Taper Diameter (inch)	0.25 IN

Additional Information

Country of Origin (Primary)	MX
Harmonized Tariff Code (Schedule B)	8511100000
Harmonized Tariff Code (HTS)	8511100000
UPC	00037551000678
VMRS Code	033003005

Part Interchanges

CHAMPION 821 Cross Reference

We have 2 alternatives for the 821 by CHAMPION:

Fits Vehicles

Ski-Doo RV 250 (1976)
Ski-Doo Olympique 300T (1978)
Ski-Doo Citation 300 (1978)
KTM 50 Mini Adventure (1998-1999)
Cobra KING (1997)
Kawasaki KX450 (1974)
Kawasaki H1 Mach III (1972-1975)
Kawasaki F7 (1971-1975)
BMW R50/2 (1960-1969)

For more than 110 years, Champion® has been a highly respected brand for spark plugs worldwide. From airplanes to high-performance race cars, Champion has developed spark plugs for almost every type of engine. Its century’s worth of experience and commitment has led to designs and optimizations that make Champion spark plugs perform better than the competition. This proven expertise and engineering has also been expanded to other maintenance products, including Champion filters, batteries, and lighting. All products are designed, manufactured, and tested in accordance with OE specifications to ensure a seamless fit and function. When it comes to quality, the customer is always a winner with Champion.