Champion 14 Spark Plug

Champion Copper Plus 14 Spark Plug

Champion Copper Plus 14 is a resistor spark plug built for dependable ignition performance and stable heat control. Its copper core electrode improves conductivity, while nickel center and ground electrode materials support consistent wear characteristics for everyday driving and classic vehicle service.

Compatible With a wide range of Chrysler, Dodge, Chevrolet, Pontiac, Buick, GMC, Jeep, Oldsmobile, and Toyota applications, this RJ12YC-style plug is a direct-fit choice for many vintage and OE-spec secondary ignition setups. The Champion 14 part number is commonly searched for classic V8 tune-ups and OE replacement maintenance.

Key Features

• Copper core electrode for improved conductivity and heat management
• Nickel center electrode tip and nickel ground electrode construction
• Resistor design for reduced electrical noise
• Pre-gapped at 0.035 in / 0.90 mm
• Flat seat design with 0.375 in reach and 14 mm thread diameter
• Non-removable nut terminal for standard ignition wire connection
• Champion Copper Plus classification for OE-style service replacement

Product Details

The Champion Copper Plus line focuses on practical ignition performance with a copper core that helps transfer heat efficiently and maintain consistent firing characteristics. Part number 14 uses an RJ12YC plug type, a 0.035-inch gap, and a resistor configuration suited to many older domestic and import engines. For shoppers searching Champion 14 spark plug, RJ12YC spark plug, or copper core spark plug for classic Chrysler, Dodge Charger, Chevrolet Camaro, or Pontiac applications, this part matches common OE-style service requirements.

This part cross-references Autolite 85 and 437 for the same application.

Used For

• Restoring weak spark or inconsistent ignition performance
• Replacing worn plugs during tune-up service on older engines
• Addressing rough idle caused by aged or fouled spark plugs
• Maintaining proper combustion in OE-spec ignition systems
• Servicing classic Chrysler, Dodge, Chevrolet, Pontiac, Buick, GMC, Jeep, Oldsmobile, and Toyota vehicles

Installation Notes and Tips

Verify plug type, reach, seat style, and gap before installation. This plug is pre-gapped at 0.035 in, but final inspection is recommended before use. Confirm the engine calls for an RJ12YC-style plug and a 14 mm, flat-seat configuration. For fitment examples, this part fits 1977-1978 Chrysler New Yorker, 1977-1978 Dodge Charger, and 1969-1970 Chevrolet Camaro, with additional coverage across many 1955-1978 applications listed in the fitment data.

Quality Assurance

Champion Copper Plus plugs are built around a copper core electrode for conductivity and heat control, with nickel-based electrode materials for dependable wear in service. The Champion 14 spark plug is intended as an OE-style replacement for confirmed applications and should be matched to the engine’s specified heat range and gap requirements.