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Champion 302 Spark Plug
| Brand | Champion 302 |
|---|---|
| Center Electrode Diameter (Inch) | 0.1 |
| Center Electrode Tip Material | Nickel |
| Classification | Champion Copper Plus |
| Electrical Terminal Type | Removable Nut |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Material | Nickel Copper Alloy |
| Ground Electrode Quantity | 1 |
| Hex Size | 0.813 |
| Hex Size | 20.650 |
| Hex Type | Hex |
| Installed Height (Inch) | 2.24 |
| Insulator Height | 0.06 |
| Insulator Projection (Inch) | 0.06 |
| Manufacturer Heat Range | 11 |
| Plug Type | N11YC |
| Pre-Gap Size | 0.032 |
| Pre-Gap Size | 0.82 |
| Reach | 0.75 |
| Resistor Type | No |
| Seat Type | Flat |
| Taper Diameter (Inch) | 0.25 |
| Thread Diameter | 0.551 |
| Thread Diameter | 14.000 |
| Product line | Copper Plus |
| Fits | Mercedes-Benz, Aston Martin, Audi, Volkswagen, BMW, Jaguar, Harley Davidson, Saab, Fargo, and Chevrolet · 24 vehicles |
Copper core electrode. Improves conductivity and heat control for steady wear.
Nickel electrode materials. Built with nickel and nickel-copper alloy for reliable spark performance.
Champion Copper Plus. Dependable performance from Champion's copper-core spark plug line.
Cross-references AMS Automotive 6411, Anchor 3018 and Anchor 3027 for the same application. See all 46.
Champion Copper Plus 302 Spark Plug
Champion Copper Plus 302 is a non-resistor spark plug built for dependable ignition performance in OE-style applications. It uses a copper core electrode for improved conductivity and heat control, with nickel center and ground electrode materials for consistent wear characteristics.
With a flat seat, 14 mm thread diameter, 0.75 in reach, and a pre-gap of 0.032 in, this plug is specified for select Mercedes-Benz, Chevrolet, Jaguar, Audi, and Volkswagen applications. The Champion Copper Plus line focuses on straightforward replacement fitment and stable secondary ignition performance.
Key Features
- Copper core electrode for conductivity and heat management
- Nickel center electrode tip and nickel ground electrode core
- Non-resistor design for applications that require it
- Pre-gapped at 0.032 in
- Flat seat design with 14 mm thread diameter and 0.75 in reach
- Removable nut terminal for flexible connection styles
- Champion part number 302, plug type N11YC
Detailed Description
Champion 302 is a Copper Plus spark plug engineered around a copper core electrode to help transfer heat efficiently while maintaining reliable spark delivery. The nickel electrode construction supports steady wear in secondary ignition systems, and the non-resistor configuration matches vehicles that call for this plug style. This part cross-references NGK 7327 for the same application.
Fitment includes 1986-1991 Mercedes-Benz 420SEL, 1984-1985 Mercedes-Benz 500SEC, 1984-1985 Mercedes-Benz 500SEL, 1980 Audi 4000, 1980 Volkswagen Jetta, 1980 Volkswagen Rabbit Convertible, 1980 Volkswagen Rabbit Pickup, 1975-1977 Jaguar XJ6, 1972-1974 Jaguar XJ6, and 1965 Chevrolet Bel Air, Corvette, and Malibu. For Chevrolet Bel Air, Corvette, and Malibu applications, the listed OE-style use is for engines of 350 horsepower and higher.
What It Helps Address
- Hard starting caused by worn or fouled spark plugs
- Rough idle from inconsistent ignition firing
- Misfire conditions tied to degraded plug electrodes
- Heat control issues in older ignition systems
- Loss of spark quality in OE-spec secondary ignition setups
Installation Notes and Tips
Verify the vehicle calls for plug type N11YC, a flat seat, 14 mm thread diameter, and the specified 0.032 in gap before installation. Check the terminal style and confirm the non-resistor requirement matches the ignition system. Use the listed fitment notes for Mercedes-Benz 420SEL, 500SEC, 500SEL, Jaguar XJ6, Audi 4000, Volkswagen Jetta, Rabbit Convertible, Rabbit Pickup, and Chevrolet Bel Air, Corvette, and Malibu applications.
Quality Assurance
Champion Copper Plus 302 is built to meet the dimensional and material requirements listed for the application, including copper-core conductivity and nickel electrode construction. The part number 302 is identified as Champion Copper Plus and is specified for OE-type replacement use where the listed plug characteristics are required.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1991 | Mercedes-Benz | 420SEL | 4.2L | V8 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1990 | Mercedes-Benz | 420SEL | 4.2L | V8 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1989 | Mercedes-Benz | 420SEL | 4.2L | V8 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1988 | Mercedes-Benz | 420SEL | 4.2L | V8 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1987 | Mercedes-Benz | 420SEL | 4.2L | V8 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1986 | Mercedes-Benz | 420SEL | 4.2L | V8 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1985 | Mercedes-Benz | 500SEC | 5.0L | V8 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1985 | Mercedes-Benz | 500SEL | 5.0L | V8 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1984 | Mercedes-Benz | 500SEC | 5.0L | V8 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1984 | Mercedes-Benz | 500SEL | 5.0L | V8 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1980 | Audi | 4000 | 1.6L | L4 | GAS | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N11YC; Copper Plus |
| 1980 | Volkswagen | Jetta | 1.6L | L4 | GAS | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N11YC; Copper Plus |
| 1980 | Volkswagen | Rabbit Convertible | 1.6L | L4 | — | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N11YC; Copper Plus |
| 1980 | Volkswagen | Rabbit Pickup | 1.6L | L4 | — | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N11YC; Copper Plus |
| 1980 | Volkswagen | Rabbit Pickup | 1.5L | L4 | — | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N11YC; Copper Plus |
| 1977 | Jaguar | XJ6 | 4.2L | L6 | — | N/A | Non-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number N11YC; Copper Plus |
| 1976 | Jaguar | XJ6 | 4.2L | L6 | — | N/A | Non-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number N11YC; Copper Plus |
| 1975 | Jaguar | XJ6 | 4.2L | L6 | — | N/A | Non-Resistor Type; OE Type; Gap 0.024 (in); Plug Type Number N11YC; Copper Plus |
| 1974 | Jaguar | XJ6 | 4.2L | L6 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1973 | Jaguar | XJ6 | 4.2L | L6 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1972 | Jaguar | XJ6 | 4.2L | L6 | — | N/A | Non-Resistor Type; OE Type; Gap 0.032 (in); Plug Type Number N11YC; Copper Plus |
| 1965 | Chevrolet | Bel Air | 6.5L | V8 | — | N/A | Non-resistor type spark plug for engines of 350 horsepower and higher, with a gap of 0.035 inches and plug type number N11YC.; Copper Plus |
| 1965 | Chevrolet | Corvette | 6.5L | V8 | — | N/A | Non-resistor type spark plug for engines of 350 horsepower and higher, with a gap of 0.035 inches and plug type number N11YC.; Copper Plus |
| 1965 | Chevrolet | Malibu | 6.5L | V8 | — | N/A | Non-resistor type spark plug for engines of 350 horsepower and higher, with a gap of 0.035 inches and plug type number N11YC.; Copper Plus |
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