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Champion 806 Spark Plug
| Brand | Champion 806 |
|---|---|
| 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) | 2.24 |
| Insulator Height | 0.06 |
| Insulator Projection (Inch) | 0.06 |
| Manufacturer Heat Range | 92 |
| Plug Type | L92YC |
| Pre-Gap Size | 0.030 |
| Pre-Gap Size | 0.76 |
| Reach | 0.5 |
| Resistor Type | No |
| Seat Type | Flat |
| Taper Diameter (Inch) | 0.31 |
| Thread Diameter | 0.551 |
| Thread Diameter | 14.000 |
| Product line | Copper Plus |
| Fits | Yamaha, Suzuki, Honda, MG, Renault, Morgan, Rover, Citroen, Chevrolet, Buick, Oldsmobile, and Pontiac · 9 vehicles |
Copper core electrode. Improves conductivity and heat control for steady wear.
Nickel electrodes. Built with nickel materials for reliable spark performance.
Champion Copper Plus. Dependable performance from Champion's Copper Plus line.
Cross-references Anchor 3611, Autolite 275 and 147BU for the same application. See all 15.
Champion Copper Plus 806 Spark Plug Overview
Champion Copper Plus 806 is a spark plug built for dependable ignition performance in small-engine and OE-style applications. Its copper core electrode improves conductivity and heat control, while nickel-based electrode materials support steady wear characteristics for consistent operation.
Compatible With select Rover 3500, Buick Skylark, Oldsmobile Cutlass, and Pontiac Tempest applications, this Champion 806 spark plug is a direct-fit option for vehicles calling for plug type L92YC. The Copper Plus line focuses on practical ignition performance with straightforward serviceability.
Key Features
- Copper core electrode for improved conductivity and heat management
- Nickel center electrode tip and nickel ground electrode core material
- Non-resistor design
- Flat seat construction
- Removable nut terminal type
- Pre-gapped at 0.030 in. / 0.76 mm
- Champion Copper Plus Small Engine classification
- Part number 806, plug type L92YC
Product Details
Champion 806 is engineered around a copper core design that helps move heat away from the firing end while maintaining strong electrical conductivity. The nickel center electrode tip and nickel copper alloy ground electrode support stable spark delivery and normal wear in service. With a 14 mm thread diameter, 0.5 in. reach, flat seat, and 20.650 mm hex size, this plug matches the dimensional requirements listed for the confirmed applications. This part cross-references Autolite 275 for the same application.
What It Helps Address
- Hard starting caused by worn or inconsistent spark plugs
- Rough idle from weak ignition output
- Misfire symptoms related to plug wear or incorrect heat control
- Loss of throttle response from degraded spark quality
- Service intervals where a direct replacement plug is needed
Installation Notes and Tips
Verify plug type L92YC, seat style, thread diameter, reach, and heat range before installation. Confirm the specified gap for the vehicle application; listed fitments include 0.025 in., 0.030 in., and 0.035 in. requirements depending on model. Use the removable nut terminal only if your ignition lead requires it, and tighten to the vehicle manufacturer’s specification.
Fits 1972-1974 Rover 3500, N/A; Fits 1962-1963 Buick Skylark, N/A; Fits 1961-1963 Oldsmobile Cutlass, N/A; Fits 1961 Pontiac Tempest, N/A.
Quality Assurance
Champion Copper Plus plugs are built around a proven copper-core construction for reliable conductivity and heat control. Part number 806 is manufactured to the listed dimensional and electrical specifications for the confirmed applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1974 | Rover | 3500 | — | — | N/A | Gap 0.025 (in); Plug Type Number L92YC; Copper Plus |
| 1973 | Rover | 3500 | — | — | N/A | Gap 0.025 (in); Plug Type Number L92YC; Copper Plus |
| 1972 | Rover | 3500 | — | — | N/A | Gap 0.025 (in); Plug Type Number L92YC; Copper Plus |
| 1963 | Buick | Skylark | 3.5L | V8 | N/A | OE Type; Gap 0.035 (in); Plug Type Number L92YC; Copper Plus |
| 1963 | Oldsmobile | Cutlass | 3.5L | V8 | N/A | OE Type; Gap 0.030 (in); Plug Type Number L92YC; Copper Plus |
| 1962 | Buick | Skylark | 3.5L | V8 | N/A | OE Type; Gap 0.035 (in); Plug Type Number L92YC; Copper Plus |
| 1962 | Oldsmobile | Cutlass | 3.5L | V8 | N/A | OE Type; Gap 0.030 (in); Plug Type Number L92YC; Copper Plus |
| 1961 | Oldsmobile | Cutlass | 3.5L | V8 | N/A | OE Type; Gap 0.030 (in); Plug Type Number L92YC; Copper Plus |
| 1961 | Pontiac | Tempest | 3.5L | V8 | N/A | OE Type; Gap 0.035 (in); Plug Type Number L92YC; Copper Plus |
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