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Champion
Copper PlusChampion 34 Spark Plug
| Brand | Champion 34 |
|---|---|
| Ground Electrode Tip Design | J gap |
| Ground Electrode Core Material | Nickel |
| Center Electrode Tip Material | Nickel |
| Pre-Gap Size | 0.033 |
| Pre-Gap Size | 0.85 |
| Ground Electrode Quantity | 1 |
| Insulator Height | 0.06 |
| Manufacturer Heat Range | 8 |
| Seat Type | Flat |
| Reach | 1.000 |
| Thread Diameter | 0.472 |
| Thread Diameter | 12.000 |
| Resistor Type | Yes |
| Hex Type | Hex |
| Center Electrode Diameter (Inch) | 0.078 |
| Classification | Champion copper plus |
| Gap Style | J gap |
| Ground Electrode Material | Nickel copper alloy |
| Hex Size | 0.625 |
| Hex Size | 15.880 |
| Installed Height (Inch) | 1.99 |
| Insulator Projection (Inch) | 0.06 |
| Product line | Copper Plus |
| Fits | Dodge, Mercedes-Benz, and Smart · 117 vehicles |
Copper core electrode. Improves conductivity and heat control for steady wear.
J-gap design. Promotes consistent spark performance.
Resistor type. Helps reduce electrical noise in the ignition system.
Cross-references RER8YC for the same application. See all 1.
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Champion Copper Plus 34 Spark Plug
Champion Copper Plus 34 is a resistor spark plug built for dependable ignition performance in a range of Mercedes-Benz, Smart, and Dodge Sprinter applications. Its copper core electrode supports conductivity and heat control, while the nickel center and ground electrode materials are selected for steady wear characteristics.
The Copper Plus line focuses on practical OE-style service life and consistent firing behavior. For drivers searching for a Champion 34 spark plug for Mercedes-Benz C300, E350, ML350, or Smart Fortwo fitment, this plug matches the specified RC7YC application requirements listed below.
Key Features
- Copper core electrode for improved conductivity and heat management
- Nickel center electrode tip and nickel ground electrode construction
- J-gap design with a flat seat
- Resistor type plug for ignition system noise control
- Pre-gapped at 0.033 in / 0.85 mm
- Champion Copper Plus classification for OE-style service applications
- Part number 34 for easy catalog matching
Product Details
Champion Copper Plus 34 is engineered as a conventional spark plug with a 12 mm thread diameter, 1.000 in reach, 0.625 in hex size, and heat range 8. The copper core helps transfer heat away from the firing end, supporting stable combustion and even wear over time. This makes it a practical choice for owners looking for a Champion 34 spark plug replacement for Mercedes-Benz C350, E550, SL550, or Smart Fortwo vehicles that call for the RC7YC plug type.
This part cross-references Monroe Shocks & Struts (e.g., RER8YC) for the same application.
What It Helps Address
- Hard starting caused by worn or inconsistent spark plugs
- Rough idle from weak or uneven spark delivery
- Misfire conditions tied to electrode wear or incorrect gap
- Reduced throttle response from degraded ignition performance
- Service replacement needs for specified Mercedes-Benz, Smart, and Sprinter applications
Installation Notes and Tips
- Verify the vehicle calls for RC7YC-equivalent specifications before installation.
- Confirm the gap requirement for the application; listed fitments reference 0.032 in or 0.036 in depending on model.
- Use the correct torque procedure for the cylinder head material and plug seat type.
- Inspect ignition coils, boots, and wires during spark plug service to avoid repeat misfire issues.
- Check the plug well for oil, carbon, or debris before installing the new plug.
Quality Assurance
Champion Copper Plus plugs are built around a copper core design for conductivity and heat control, with nickel electrode materials chosen for dependable wear in everyday service. Part number 34 is cataloged for direct application matching across the listed Mercedes-Benz, Smart, and Dodge Sprinter fitments.
- Fits 2009-2015 Mercedes-Benz G550, N/A
- Fits 2008-2015 Smart Fortwo, N/A
- Fits 2010-2013 Mercedes-Benz S400, N/A
- Fits 2008-2012 Mercedes-Benz C300, N/A
- Fits 2008-2012 Mercedes-Benz GL550, N/A
- Fits 2010-2012 Mercedes-Benz GLK350, N/A
- Fits 2007-2012 Mercedes-Benz SL550, N/A
- Fits 2006-2011 Mercedes-Benz C350, N/A
- Fits 2007-2011 Mercedes-Benz CLS550, N/A
- Fits 2006-2011 Mercedes-Benz E350, N/A
- Fits 2007-2011 Mercedes-Benz E550, N/A
- Fits 2006-2011 Mercedes-Benz ML350, N/A
- Fits 2010-2011 Mercedes-Benz ML450, N/A
- Fits 2008-2011 Mercedes-Benz ML550, N/A
- Fits 2006-2011 Mercedes-Benz R350, N/A
- Fits 2007-2011 Mercedes-Benz S550, N/A
- Fits 2005-2011 Mercedes-Benz SLK350, N/A
- Fits 2007-2010 Mercedes-Benz CL550, N/A
- Fits 2006-2009 Mercedes-Benz C230, N/A
- Fits 2006-2009 Mercedes-Benz CLK350, N/A
- Fits 2007-2009 Mercedes-Benz CLK550, N/A
- Fits 2007-2008 Dodge Sprinter 2500, N/A
- Fits 2007-2008 Dodge Sprinter 3500, N/A
- Fits 2006-2007 Mercedes-Benz C280, N/A
- Fits 2007 Mercedes-Benz E280, N/A
- Fits 2006 Mercedes-Benz S350, N/A
This part fits 117 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Liters | Cylinders | Notes |
|---|---|---|---|---|---|
| 2015 | Mercedes-Benz | G550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2015 | Smart | Fortwo | 1.0L | L3 | 2 Plugs Per Cylinder Required; Gap 0.036 (in); Plug Type Number RC7YC; Copper Plus |
| 2014 | Mercedes-Benz | G550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2014 | Smart | Fortwo | 1.0L | L3 | 2 Plugs Per Cylinder Required; Gap 0.036 (in); Plug Type Number RC7YC; Copper Plus |
| 2013 | Mercedes-Benz | G550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2013 | Mercedes-Benz | S400 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2013 | Smart | Fortwo | 1.0L | L3 | 2 Plugs Per Cylinder Required; Gap 0.036 (in); Plug Type Number RC7YC; Copper Plus |
| 2012 | Mercedes-Benz | C300 | 3.0L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2012 | Mercedes-Benz | G550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2012 | Mercedes-Benz | GL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2012 | Mercedes-Benz | GLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2012 | Mercedes-Benz | S400 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2012 | Mercedes-Benz | SL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2012 | Smart | Fortwo | 1.0L | L3 | 2 Plugs Per Cylinder Required; Gap 0.036 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | C300 | 3.0L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | C350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | CLS550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | E350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | E550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | G550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | GL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | GLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | ML350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | ML450 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | ML550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | R350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | S400 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | S550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | SL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Mercedes-Benz | SLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2011 | Smart | Fortwo | 1.0L | L3 | 2 Plugs Per Cylinder Required; Gap 0.036 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | C300 | 3.0L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | C350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | CL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | CLS550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | E350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | E550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | G550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | GL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | GLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | ML350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | ML450 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | ML550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | R350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | S400 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | S550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | SL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Mercedes-Benz | SLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2010 | Smart | Fortwo | 1.0L | L3 | 2 Plugs Per Cylinder Required; Gap 0.036 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | C230 | 2.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | C300 | 3.0L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | C350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | CL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | CLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | CLK550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | CLS550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | E350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | E550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | G550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | GL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | ML350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | ML550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | R350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | S550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | SL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Mercedes-Benz | SLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2009 | Smart | Fortwo | 1.0L | L3 | 2 Plugs Per Cylinder Required; Gap 0.036 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Dodge | Sprinter 2500 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Dodge | Sprinter 3500 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Freightliner | Sprinter 2500 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Freightliner | Sprinter 3500 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | C230 | 2.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | C300 | 3.0L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | C350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | CL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | CLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | CLK550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | CLS550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | E350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | E550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | GL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | ML350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | ML550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | R350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | S550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | SL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Mercedes-Benz | SLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2008 | Smart | Fortwo | 1.0L | L3 | 2 Plugs Per Cylinder Required; Gap 0.036 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Dodge | Sprinter 2500 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Dodge | Sprinter 3500 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Freightliner | Sprinter 2500 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Freightliner | Sprinter 3500 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | C230 | 2.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | C280 | 3.0L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | C350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | CL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | CLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | CLK550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | CLS550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | E280 | 3.0L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | E350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | E550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | ML350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | R350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | S550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | SL550 | 5.5L | V8 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2007 | Mercedes-Benz | SLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2006 | Mercedes-Benz | C230 | 2.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2006 | Mercedes-Benz | C280 | 3.0L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2006 | Mercedes-Benz | C350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2006 | Mercedes-Benz | CLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2006 | Mercedes-Benz | E350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2006 | Mercedes-Benz | ML350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2006 | Mercedes-Benz | R350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2006 | Mercedes-Benz | S350 | 3.7L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2006 | Mercedes-Benz | SLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| 2005 | Mercedes-Benz | SLK350 | 3.5L | V6 | Gap 0.032 (in); Plug Type Number RC7YC; Copper Plus |
| No rows match your filter. | |||||
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
RER8YC