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Champion 803 Spark Plug
| Brand | Champion 803 |
|---|---|
| Center Electrode Diameter (Inch) | 0.1 |
| Center Electrode Tip Material | Nickel |
| Classification | Champion Copper Plus Small Engine |
| 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) | 2.15 |
| Manufacturer Heat Range | 4 |
| Plug Type | N4C |
| Pre-Gap Size | 0.025 |
| Pre-Gap Size | 0.65 |
| 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 | Suzuki, Yamaha, Volkswagen, Kawasaki, Beta, Renault, Bultaco, Polaris, Harley Davidson, Sno-Jet, NSU, Lancia, Alfa Romeo, Simca, Alvis, Fiat, Turner, BMW, Facel Vega, Lotus, Panhard, MG, and Mercedes-Benz · 8 vehicles |
Copper core electrode. Improves conductivity and heat control for more consistent wear.
Nickel center electrode. Supports dependable performance and steady ignition.
Flat seat design. Provides a secure, straightforward spark plug fit.
Cross-references Anchor 2615, Anchor 3051 and Anchor 3054 for the same application. See all 40.
Champion Copper Plus 803 Spark Plug
Champion Copper Plus 803 is a spark plug built for dependable ignition performance in small engine and automotive secondary ignition applications. It uses a copper core electrode for improved conductivity and heat control, with nickel center and ground electrode materials for steady wear characteristics.
Compatible with 1984-1991 Volkswagen Vanagon applications, this Champion spark plug is specified as a non-resistor, OE-type replacement with a 0.028 in gap note in the fitment data. The Champion Copper Plus line focuses on straightforward, serviceable ignition performance for engines that call for a conventional copper-core plug.
Key Features
- Part number 803
- Copper core electrode for conductivity and heat control
- Nickel center electrode tip and nickel ground electrode core material
- Non-resistor design
- Flat seat design with 0.75 in reach
- 14 mm thread diameter and 0.813 in hex size
- Pre-gapped at 0.025 in / 0.65 mm
- Removable nut terminal
Product Details
The Champion Copper Plus line is built around a copper-core design that helps manage spark plug temperature while maintaining consistent electrical transfer. For Volkswagen Vanagon owners searching for a Champion 803 spark plug or an OE-style replacement for 1984-1991 Volkswagen Vanagon ignition service, this plug matches the listed fitment and specifications, including a non-resistor configuration and flat seat construction. The plug type is N4C, with a manufacturer heat range of 4 and a 0.25 in taper diameter.
This part cross-references AP Exhaust 7310 for the same application.
Common Issues It Can Address
- Hard starting caused by worn or fouled spark plugs
- Misfire from weak or inconsistent spark delivery
- Rough idle related to aged ignition components
- Reduced throttle response from degraded plug performance
- Service replacement for a worn Champion 803 spark plug
Installation Notes and Tips
- Verify the plug type, thread diameter, reach, and seat style before installation.
- Check and set the gap to the vehicle specification; fitment notes list 0.028 in for the Volkswagen Vanagon application.
- Inspect ignition wires, cap, and rotor during spark plug service to avoid repeat misfire concerns.
- Use the removable nut terminal only if your ignition lead requires that terminal style.
Quality Assurance
Champion Copper Plus spark plugs are built to support consistent ignition performance with copper-core construction and nickel electrode materials. Part number 803 is listed with direct fitment for 1984-1991 Volkswagen Vanagon applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1991 | Volkswagen | Vanagon | 2.1L | H4 | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N4C; Copper Plus |
| 1990 | Volkswagen | Vanagon | 2.1L | H4 | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N4C; Copper Plus |
| 1989 | Volkswagen | Vanagon | 2.1L | H4 | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N4C; Copper Plus |
| 1988 | Volkswagen | Vanagon | 2.1L | H4 | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N4C; Copper Plus |
| 1987 | Volkswagen | Vanagon | 2.1L | H4 | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N4C; Copper Plus |
| 1986 | Volkswagen | Vanagon | 2.1L | H4 | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N4C; Copper Plus |
| 1985 | Volkswagen | Vanagon | 1.9L | H4 | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N4C; Copper Plus |
| 1984 | Volkswagen | Vanagon | 1.9L | H4 | N/A | Non-Resistor Type; OE Type; Gap 0.028 (in); Plug Type Number N4C; Copper Plus |
| No rows match your filter. | ||||||