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Champion 315 Spark Plug
| Brand | Champion 315 |
|---|---|
| Ground Electrode Core Material | Nickel |
| Electrical Terminal Type | Removable nut |
| Center Electrode Tip Material | Nickel |
| Pre-Gap Size | 0.025 |
| Pre-Gap Size | 0.64 |
| Ground Electrode Quantity | 1 |
| Insulator Height | 0.06 |
| Manufacturer Heat Range | 6 |
| Seat Type | Flat |
| Reach | 0.75 |
| Thread Diameter | 0.551 |
| Thread Diameter | 14.000 |
| Resistor Type | No |
| Hex Type | Hex |
| Center Electrode Diameter (Inch) | 0.1 |
| Classification | Champion copper plus small engine |
| Ground Electrode Material | Nickel copper alloy |
| Hex Size | 0.813 |
| Hex Size | 20.650 |
| Installed Height (Inch) | 2.24 |
| Insulator Projection (Inch) | 0.06 |
| Plug Type | N6yc |
| Taper Diameter (Inch) | 0.25 |
| Product line | Copper Plus |
| Fits | Jaguar, Lamborghini, Maserati, Mercedes-Benz, Porsche, and Rolls-Royce · 59 vehicles |
Copper core electrode. Improves conductivity and heat control for dependable performance.
Nickel alloy electrodes. Built for good overall wear and consistent ignition performance.
Small engine plug. Champion Copper Plus design for reliable secondary ignition.
Cross-references Anchor 2912, Hayden 112 and VNE 4251 for the same application. See all 137.
Champion Copper Plus 315 Spark Plug
Champion Copper Plus 315 is a small engine spark plug built around a copper core electrode for strong conductivity and heat control. It is specified as plug type N6YC and uses a flat seat, 0.75-inch reach, and 14 mm thread diameter for direct replacement in listed applications.
For classic European applications such as Porsche 911, Mercedes-Benz 300SE, and Maserati Quattroporte, this spark plug supports OE-style service requirements with a nickel center electrode tip and nickel ground electrode construction. The removable nut terminal and non-resistor design make it a straightforward choice for ignition service where the original plug specification calls for Champion Copper Plus 315.
Key Features
- Copper core electrode for improved conductivity and heat control
- Nickel center electrode tip and nickel copper alloy ground electrode
- Plug type N6YC with flat seat design
- 0.75-inch reach and 14 mm thread diameter
- Non-resistor spark plug with removable nut terminal
- Pre-gap size listed at 0.025 in / 0.64 mm
- Champion Copper Plus small engine classification
Detailed Description
Champion Copper Plus 315 is engineered for dependable ignition performance in applications that call for the N6YC plug specification. The copper core helps move heat away from the firing end while supporting consistent conductivity, and the nickel-based electrode materials are selected for durable everyday service. This part number, 315, is listed across a wide range of classic vehicles, including Porsche 911, Mercedes-Benz 300SE, and Maserati Biturbo, making it a practical OE-style replacement for many vintage ignition systems.
This part cross-references VNE 4251 for the same application.
What It Is Used For
- Replacing worn spark plugs that cause hard starting
- Restoring stable idle and smoother combustion
- Addressing misfire symptoms from worn electrodes
- Correcting fouling issues tied to aged ignition components
- Maintaining proper ignition performance in classic European engines
Installation Notes and Tips
Verify plug type N6YC, 14 mm thread diameter, 0.75-inch reach, and flat seat before installation. Confirm the specified gap for the vehicle application; listed fitment notes include 0.024 in, 0.025 in, 0.028 in, and 0.032 in depending on the model. Use the correct torque procedure for the cylinder head material and inspect ignition wires, cap, and coil condition during service. Fits 1986-1987 Maserati 425, N/A. Fits 1984-1987 Maserati Biturbo, N/A. Fits 1981-1982 Lamborghini Countach, N/A. Fits 1974-1976 Lamborghini Countach, N/A. Fits 1972-1973 Porsche 911, N/A. Fits 1965-1968 Porsche 911, N/A. Fits 1968-1971 Jaguar XJ, N/A. Fits 1969-1971 Porsche 911, N/A. Fits 1963-1970 Maserati Quattroporte, N/A. Fits 1960-1966 Mercedes-Benz 300SE, N/A. Fits 1966 Mercedes-Benz 300SEL, N/A. Fits 1963-1965 Mercedes-Benz 300SEL, N/A. Fits 1958-1962 Mercedes-Benz 300D, N/A. Fits 1949-1954 Rolls-Royce Silver Dawn, N/A.
Quality Assurance
Champion Copper Plus 315 is built to the published plug specifications for the listed applications, including heat range 6, flat seat construction, and the N6YC plug type. The Copper Plus line focuses on copper-core ignition performance for dependable service in classic and small engine applications.
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 1987 | Maserati | 425 | — | 2.5L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1987 | Maserati | Biturbo | — | 2.5L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1986 | Maserati | 425 | — | 2.5L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1986 | Maserati | Biturbo | — | 2.5L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1985 | Maserati | Biturbo | — | 2.5L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1984 | Maserati | Biturbo | — | 2.5L | V6 | — | N/A | OE Type; Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1982 | Lamborghini | Countach | — | 3.9L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1981 | Lamborghini | Countach | — | 3.9L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1976 | Lamborghini | Countach | — | 3.9L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1975 | Lamborghini | Countach | — | 3.9L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1974 | Lamborghini | Countach | — | 3.9L | V12 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1973 | Porsche | 911 | T | 2.3L | H6 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1972 | Porsche | 911 | T | 2.3L | H6 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1971 | Jaguar | XJ | — | 2.8L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
| 1971 | Porsche | 911 | T | 2.2L | H6 | — | N/A | Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1971 | Porsche | 911 | — | 2.2L | H6 | — | N/A | Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1970 | Jaguar | XJ | — | 2.8L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
| 1970 | Maserati | Quattroporte | — | 4.1L | V8 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1970 | Porsche | 911 | S | 2.2L | H6 | — | N/A | Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1970 | Porsche | 911 | E | 2.2L | H6 | — | N/A | Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1970 | Porsche | 911 | T | 2.2L | H6 | — | N/A | Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1969 | Jaguar | XJ | — | 2.8L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
| 1969 | Maserati | Quattroporte | — | 4.1L | V8 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1969 | Porsche | 911 | E | 2.0L | H6 | — | N/A | Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1969 | Porsche | 911 | S | 2.0L | H6 | — | N/A | Gap 0.028 (in); Plug Type Number N6YC; Copper Plus |
| 1968 | Jaguar | XJ | — | 2.8L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
| 1968 | Maserati | Quattroporte | — | 4.1L | V8 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1968 | Porsche | 911 | — | 2.0L | H6 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1967 | Maserati | Quattroporte | — | 4.1L | V8 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1967 | Porsche | 911 | — | 2.0L | H6 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1966 | Maserati | Quattroporte | — | 4.1L | V8 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1966 | Mercedes-Benz | 300SE | — | 3.0L | L6 | — | N/A | 3/4 (in) Reach Spark Plugs; Gap 0.032 (in); Plug Type Number N6YC; Copper Plus |
| 1966 | Mercedes-Benz | 300SEL | — | 3.0L | L6 | — | N/A | Gap 0.032 (in); Plug Type Number N6YC; Copper Plus |
| 1966 | Porsche | 911 | — | 2.0L | H6 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1965 | Maserati | Quattroporte | — | 4.1L | V8 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1965 | Mercedes-Benz | 300SE | — | 3.0L | L6 | — | N/A | 3/4 (in) Reach Spark Plugs; Gap 0.032 (in); Plug Type Number N6YC; Copper Plus |
| 1965 | Mercedes-Benz | 300SEL | — | 3.0L | L6 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1965 | Porsche | 911 | — | 2.0L | H6 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1964 | Maserati | Quattroporte | — | 4.1L | V8 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1964 | Mercedes-Benz | 300SE | — | 3.0L | L6 | — | N/A | 3/4 (in) Reach Spark Plugs; Gap 0.032 (in); Plug Type Number N6YC; Copper Plus |
| 1964 | Mercedes-Benz | 300SEL | — | 3.0L | L6 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1963 | Maserati | Quattroporte | — | 4.1L | V8 | — | N/A | Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1963 | Mercedes-Benz | 300SE | — | 3.0L | L6 | — | N/A | 3/4 (in) Reach Spark Plugs; Gap 0.032 (in); Plug Type Number N6YC; Copper Plus |
| 1963 | Mercedes-Benz | 300SEL | — | 3.0L | L6 | — | N/A | OE Type; Gap 0.024 (in); Plug Type Number N6YC; Copper Plus |
| 1962 | Mercedes-Benz | 300D | — | 3.0L | L6 | GAS | N/A | Gap 0.020 (in); Plug Type Number N6YC; Copper Plus |
| 1962 | Mercedes-Benz | 300SE | — | 3.0L | L6 | — | N/A | 3/4 (in) Reach Spark Plugs; Gap 0.032 (in); Plug Type Number N6YC; Copper Plus |
| 1961 | Mercedes-Benz | 300D | — | 3.0L | L6 | GAS | N/A | Gap 0.020 (in); Plug Type Number N6YC; Copper Plus |
| 1961 | Mercedes-Benz | 300SE | — | 3.0L | L6 | — | N/A | 3/4 (in) Reach Spark Plugs; Gap 0.032 (in); Plug Type Number N6YC; Copper Plus |
| 1960 | Mercedes-Benz | 300D | — | 3.0L | L6 | GAS | N/A | Gap 0.020 (in); Plug Type Number N6YC; Copper Plus |
| 1960 | Mercedes-Benz | 300SE | — | 3.0L | L6 | — | N/A | 3/4 (in) Reach Spark Plugs; Gap 0.032 (in); Plug Type Number N6YC; Copper Plus |
| 1959 | Mercedes-Benz | 300D | — | 3.0L | L6 | GAS | N/A | Gap 0.020 (in); Plug Type Number N6YC; Copper Plus |
| 1958 | Mercedes-Benz | 300D | — | 3.0L | L6 | GAS | N/A | Gap 0.020 (in); Plug Type Number N6YC; Copper Plus |
| 1954 | Rolls-Royce | Silver Dawn | — | 4.6L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
| 1953 | Rolls-Royce | Silver Dawn | — | 4.6L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
| 1952 | Rolls-Royce | Silver Dawn | — | 4.6L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
| 1951 | Rolls-Royce | Silver Dawn | — | 4.3L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
| 1951 | Rolls-Royce | Silver Dawn | — | 4.6L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
| 1950 | Rolls-Royce | Silver Dawn | — | 4.3L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
| 1949 | Rolls-Royce | Silver Dawn | — | 4.3L | L6 | — | N/A | Gap 0.025 (in); Plug Type Number N6YC; Copper Plus |
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