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Champion
Copper PlusChampion 337 Spark Plug
| Brand | Champion 337 |
|---|---|
| Center Electrode Tip Material | Nickel |
| Classification | Champion Copper Plus |
| Electrical Terminal Type | Non-Removable Nut |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | J Gap |
| Hex Size | 0.625 |
| Hex Size | 15.880 |
| Hex Type | Hex |
| Manufacturer Heat Range | 8 |
| Plug Type | RC8YC |
| Pre-Gap Size | 0.030 |
| Pre-Gap Size | 0.75 |
| Reach | 0.75 |
| Resistor Type | Yes |
| Seat Type | Flat |
| Thread Diameter | 0.551 |
| Thread Diameter | 14.000 |
| Product line | Copper Plus |
| Fits | Cadillac, Chevrolet, Volvo, and Saab · 91 vehicles |
Copper core electrode. Improves conductivity and heat control for dependable performance.
J-gap design. Promotes efficient spark delivery for consistent ignition.
Champion Copper Plus. A trusted spark plug line built for good overall wear.
Cross-references 55585517, 55585534 and FR6ED for the same application. See all 6.
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Champion Copper Plus 337 Spark Plug
Champion Copper Plus 337 is a replacement spark plug built for dependable ignition performance and stable heat control. Its copper core electrode supports conductivity, while the nickel center and ground electrode materials are selected for consistent wear in everyday driving.
Compatible With select Buick Encore, Chevrolet Cruze, Chevrolet Sonic, Cadillac ELR, and Volvo and Saab applications, this plug is listed under Champion Copper Plus and uses the RC8YC plug type. The 337 part number is a direct reference for shoppers matching OE-style ignition service parts.
Key Features
- Copper core electrode for improved conductivity and heat management
- Nickel center electrode tip and nickel ground electrode core material
- J-gap ground electrode design with one ground electrode
- Pre-gapped at 0.030 in. for specified applications
- Resistor type spark plug with non-removable nut terminal
- Flat seat, 14 mm thread diameter, 0.75 in. reach
- Hex size 0.625 in. for standard spark plug service tools
Product Details
Champion Copper Plus 337 is a conventional ignition service plug for drivers replacing worn plugs in vehicles such as the Chevrolet Cruze, Chevrolet Sonic, and Volvo S60. The copper core helps carry current efficiently and manage operating temperature, while the nickel electrode construction supports steady spark delivery and normal wear characteristics. This part number 337 is also cross-referenced to RC8YC for the same application.
What It Helps Address
- Hard starting caused by worn or fouled spark plugs
- Rough idle from inconsistent spark delivery
- Misfire conditions related to plug wear or incorrect gap
- Reduced throttle response from degraded ignition performance
- Service intervals where an OE-style replacement plug is needed
Installation Notes
Verify the plug type, thread diameter, reach, seat type, and heat range before installation. Confirm the specified gap for your vehicle application; listed fitments include 0.027 in., 0.028 in., and 0.030 in. requirements depending on model and year. Use the correct hex size and torque to the vehicle manufacturer’s specification. This plug is listed for 2013-2015 Chevrolet Cruze, 2016-2018 Buick Encore, 2016-2018 Chevrolet Sonic, 2014-2016 Cadillac ELR, and select Volvo and Saab models including 1990-1994 Saab 900 and 1987-1989 Saab 9000.
Quality Assurance
Champion Copper Plus is a recognized spark plug line focused on dependable everyday ignition service. The 337 spark plug is built to the listed specifications for fitment matching and consistent replacement use across the confirmed applications.
This part fits 91 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2016 | Cadillac | ELR | 1.4L | L4 | N/A | Gap 0.027 (in); Plug Type Number RC8YC; Copper Plus |
| 2016 | Chevrolet | Cruze Limited | 1.8L | L4 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2015 | Cadillac | ELR | 1.4L | L4 | N/A | Gap 0.027 (in); Plug Type Number RC8YC; Copper Plus |
| 2014 | Cadillac | ELR | 1.4L | L4 | N/A | Gap 0.027 (in); Plug Type Number RC8YC; Copper Plus |
| 2007 | Volvo | XC70 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2006 | Volvo | S80 | 2.5L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2006 | Volvo | V70 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2006 | Volvo | XC70 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2006 | Volvo | XC90 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2005 | Volvo | S80 | 2.5L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2005 | Volvo | S80 | 2.9L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2005 | Volvo | V70 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2005 | Volvo | V70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2005 | Volvo | XC70 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2005 | Volvo | XC90 | 2.9L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2005 | Volvo | XC90 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | C70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | C70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | S40 | 1.9L | L4 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | S60 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | S80 | 2.5L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | S80 | 2.9L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | V40 | 1.9L | L4 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | V70 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | V70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | XC70 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | XC90 | 2.9L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2004 | Volvo | XC90 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | C70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | C70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | S40 | 1.9L | L4 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | S60 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | S60 | 2.5L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | S60 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | S80 | 2.9L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | V40 | 1.9L | L4 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | V70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | V70 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | V70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | XC70 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | XC90 | 2.9L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2003 | Volvo | XC90 | 2.5L | L5 | N/A | Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 2002 | Volvo | C70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2002 | Volvo | C70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2002 | Volvo | S40 | 1.9L | L4 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2002 | Volvo | S60 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2002 | Volvo | S60 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2002 | Volvo | S80 | 2.9L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2002 | Volvo | V40 | 1.9L | L4 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2002 | Volvo | V70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2002 | Volvo | V70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2001 | Volvo | C70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2001 | Volvo | C70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2001 | Volvo | S40 | 1.9L | L4 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2001 | Volvo | S60 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2001 | Volvo | S60 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2001 | Volvo | S80 | 2.8L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2001 | Volvo | V40 | 1.9L | L4 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2001 | Volvo | V70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2001 | Volvo | V70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2000 | Volvo | C70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2000 | Volvo | C70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2000 | Volvo | S40 | 1.9L | L4 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2000 | Volvo | S70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2000 | Volvo | S80 | 2.8L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2000 | Volvo | V40 | 1.9L | L4 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2000 | Volvo | V70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 2000 | Volvo | V70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1999 | Volvo | C70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1999 | Volvo | C70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1999 | Volvo | S70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1999 | Volvo | S80 | 2.8L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1999 | Volvo | V70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1999 | Volvo | V70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1998 | Volvo | C70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1998 | Volvo | C70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1998 | Volvo | S70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1998 | Volvo | S90 | 2.9L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1998 | Volvo | V70 | 2.3L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1998 | Volvo | V70 | 2.4L | L5 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1997 | Volvo | S90 | 2.9L | L6 | N/A | Gap 0.030 (in); Plug Type Number RC8YC; Copper Plus |
| 1994 | Saab | 900 | 2.0L | L4 | N/A | OE Type; Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 1993 | Saab | 900 | 2.0L | L4 | N/A | OE Type; Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 1992 | Saab | 900 | 2.0L | L4 | N/A | OE Type; Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 1991 | Saab | 900 | 2.0L | L4 | N/A | OE Type; Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 1990 | Saab | 900 | 2.0L | L4 | N/A | OE Type; Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 1989 | Saab | 9000 | 2.0L | L4 | N/A | OE Type; Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 1988 | Saab | 900 | 2.0L | L4 | N/A | OE Type; Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 1988 | Saab | 9000 | 2.0L | L4 | N/A | OE Type; Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 1987 | Saab | 9000 | 2.0L | L4 | N/A | OE Type; Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| 1985 | Saab | 900 | 2.0L | L4 | N/A | OE Type; Gap 0.028 (in); Plug Type Number RC8YC; Copper Plus |
| No rows match your filter. | ||||||
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
5558551755585534FR6EDFR7DEK6RTCRC8YC