Description
The Champion Copper Plus Spark Plug 438 delivers dependable ignition performance for a wide range of automotive and marine engines. Built with a copper core center electrode, it provides improved electrical conductivity and accurate heat control, helping maintain consistent engine operation and extended spark plug life.
Part of the trusted Champion Copper Plus line, the RC12ECC spark plug is engineered for durability and corrosion resistance while meeting ISO and SAE standards for proven performance. Its resistor design helps maintain stable ignition system operation and reduce electrical interference.
Featuring a 0.035 in (0.90 mm) pre-gap, 14 mm thread diameter, and 0.75 in reach, this spark plug is designed as a dependable OEM-style replacement for various Dodge, Jeep, and marine engine applications, including select Tohatsu outboard 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 long service life
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Built to ISO and SAE standards for proven performance
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Resistor design for stable ignition system operation
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Suitable for automotive and marine engine applications
Specifications
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Brand: Champion
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Part Number: 438
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Plug Type: RC12ECC
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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: 0.29 in
Performance
Additional Details
Fitment
The Champion 438 spark plug fits a range of automotive and marine applications, including select:
Automotive Applications
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Dodge Dakota (1996–2002) – 2.5L L4
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Dodge Ram 1500 (2004–2006) – 8.3L V10
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Dodge Viper (2003–2006) – 8.3L V10
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Jeep Cherokee (1999–2001) – 2.5L L4 / 4.0L L6
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Jeep Grand Cherokee (1999–2004) – 4.0L L6
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Jeep Wrangler / TJ (1999–2006) – 2.5L L4 / 4.0L L6
Marine Applications
Compatible with various Tohatsu outboard engines, including select 40HP, 50HP, 70HP, and 90HP TLDI and related models.
Always confirm compatibility by year, make, model, engine size, and engine code before installation