Keep every cylinder firing cleanly with the Champion Copper Plus Spark Plug 102 (plug type RJ6C), a standard-replacement plug built to meet OE fit, form and function. It drops in as a direct-fit replacement across a broad list of classic applications — from the 1970 Chevrolet Impala [V8-6.6L] and 1967-1969 Chevrolet Camaro [V8-5.3L] to the 1954-1957 Buick Century [V8-5.3L/V8-6.0L] and 1953-1955 Chevrolet Corvette [L6-3.8L] — with 350 applications in all; see the Buyer's Guide tab for the full list.
- Copper-core center electrode: allows accurate heat-range control for longer life and dependable performance.
- Corrosion-resistant coated shell: helps the plug hold up in harsh environments.
- Built-in resistor (Resistor Type: Yes): minimizes electrical interference to help protect sensitive electronics.
- Pre-gapped & ready to install: set to 0.030 in / 0.76 mm with a flat seat type and 14 mm thread diameter; a nickel center-electrode tip completes the design.
A spark plug ignites the compressed air-fuel mixture in the combustion chamber to fire the cylinder. Rough idle, misfires, hard starts, or reduced fuel economy can be signs the plugs may need replacing — if worn plugs are the cause, this replaces them. The number of plugs required varies by engine (six-cylinder applications use 6, V8 applications use 8); check the Buyer's Guide for your engine, and confirm the correct gap against the vehicle service information.
Interchange: 124 · CR43 · CR43K · MR42K · R43 · R43C · 302 · 303 · 363 · WR6FC · WR7EC · RJ6 · RJ6C · RJ6J · XEJ5 · XJ5 · XJ6 · XJ6J · 3076 · W20SRU · WS20SU · A2C · AS4C · 14R3 · 407L
Manufacturer part number 102 · plug type RJ6C. Country of origin: Mexico.
This part cross-references / interchanges with the following part numbers:
124, CR43, CR43K, MR42K, R43, R43C, 302, 303, 363, WR6FC, WR7EC, RJ6, RJ6C, RJ6J, XEJ5, XJ5, XJ6, XJ6J, 3076, W20SRU, WS20SU, A2C, AS4C, 14R3, 407L
