Champion Marine Spark Plug L77JC4 #821 Replaces L4G L77J4 L77JC W250T1 W280S1S SELECT: Old or New Stock

Purchase is for one spark plug.

The spark plug is designed to withstand high temperatures and fits most small-engine brands and models.

For use with small marine engines

Champion copper plus small engine plugs resist fouling and provide superior corrosion resistance

Feature a copper core electrode that provides increased conductivity and heat control while delivering good overall wear characteristics

Engineered to exceed OE designs and maximum durability

Designed for easy starting

Plug Type: L77JC4

Seat Type: Gasket

Hex Size: 13/16 Inch (20 mm)

Thread Size:  14 mm

Plug Reach: 0.5 in  (12.7 mm)

MPN: 821

UPC:New stock: 037551005109 or 037551011438

Old  stock: 037551120703 or 03755156620

USA domestic shipments are shipped USPS Ground Advantage Mail with Tracking