Champion Spark Plug 4-Box/Priced Each #L77JC4/821M

Description

Champion Spark Plugs 821M Spark Plugs

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.

.Sold in Full Boxes of 4 Only.
PRICED PER PLUG.

Complete Spark Plug Charts In Our Shop/Service Catalog. Please call or email for application help.

Specifications:

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

Champion Spark Plugs Spark Plug Champion L77JC4/821M–4/Box

Normalized SKU: 821M

UPC Code: 037551121960