Description
The Champion Copper Plus Spark Plug 439 delivers reliable ignition performance and durability for a wide variety of automotive, marine, and powersports engines. Featuring a copper core center electrode, this spark plug improves electrical conductivity and heat dissipation, helping maintain consistent combustion and longer plug life.
Part of the trusted Champion Copper Plus series, the RC12MCC4 spark plug is engineered with superior corrosion resistance and meets ISO and SAE standards for proven performance. The built-in resistor helps maintain stable ignition operation and reduces electrical interference for modern engine systems.
With a 0.041 in (1.05 mm) pre-gap, 14 mm thread diameter, and 0.75 in reach, this spark plug serves as a dependable OEM-style replacement for numerous BMW, Chrysler, Dodge, Jeep, Toyota, Scion, Mitsubishi, Saturn, and various marine and powersports engines.
Features
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Copper core center electrode for improved conductivity and heat control
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Champion Copper Plus design for dependable performance and durability
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Superior corrosion resistance for extended service life
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Resistor design for stable ignition system operation
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Built to ISO and SAE standards for proven reliability
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Suitable for automotive, marine, and powersports applications
Specifications
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Brand: Champion
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Part Number: 439
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Plug Type: RC12MCC4
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Classification: Champion Copper Plus
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Grade Type: Standard Replacement
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Part Description: Spark Plug
Electrode Specifications
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Center Electrode Tip Material: Copper
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Center Electrode Design: Standard
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Ground Electrode Quantity: 1
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Ground Electrode Core Material: Nickel
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Ground Electrode Tip Material: Nickel
Dimensions
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Thread Diameter: 14.000 mm / 0.551 in
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Reach: 0.75 in
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Seat Type: Flat
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Hex Size: 0.625 in / 15.880 mm
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Insulator Height: 0.12 in
Performance
Additional Details
Fitment
The Champion 439 spark plug is compatible with a broad range of applications including select models from:
Automotive Applications
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BMW – 850Ci (1993–1997) V12
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Chrysler – 200, Aspen, Sebring (2008–2014)
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Dodge – Avenger, Caliber, Dakota, Durango, Journey, Ram 1500 (2000–2014)
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Jeep – Commander, Compass, Grand Cherokee, Patriot (1999–2009)
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Mitsubishi – Raider (2006–2007)
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Saturn – Astra (2008–2009)
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Scion – xB (2004–2006, 2013–2015)
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Toyota – 4Runner, Echo, Pickup, Prius C
Powersports & Marine Applications
Compatible with select engines from:
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Polaris (ACE 500, Ranger 500, Sportsman 450 HO)
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Sea-Doo watercraft models
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Mercury Marine outboard and jet drive engines
Always verify compatibility by year, make, model, and engine specification before installation.