Champion CCH825 Marine Spark Plug (J4C), Copper Core, Cross-Reference 378101, 502193, 509929

The Champion CCH825 is a marine spark plug built around a copper core center electrode for accurate heat range control and dependable ignition performance. Identified by Champion as spark plug number 825 and cataloged under the Champion J4C designation, this plug is engineered for outboard engine use where consistent conductivity and resistance to fouling matter most. The copper core electrode improves conductivity and heat transfer, helping the plug wear evenly under sustained engine loads instead of overheating or fouling prematurely.

Champion builds the CCH825 with corrosion-resistant construction to stand up to the humid, saltwater-exposed conditions common to marine engine compartments. It is designed as a straightforward OEM-type replacement, so it installs using standard spark plug service procedures without special tools. Each package contains one spark plug.

Specifications

• Brand: Champion
• Manufacturer Part Number: CCH825
• Champion Spark Plug Number: 825
• Electrode Material: Copper core
• UPC: 037551000012
• Unit Count: 1 spark plug
• Weight: 0.15 pounds
• OEM Equivalent Part Numbers: 378101, 502193, 509929

Replaces (OEM)

• 378101
• 502193
• 509929

Frequently Asked Questions

What does the Champion CCH825 spark plug replace? The Champion CCH825 spark plug cross-references to OEM part numbers 378101, 502193, and 509929, so any of those OEM numbers point to this same plug.

Is the CCH825 the same as Champion spark plug 825? Yes, the Champion CCH825 is Champion's own spark plug number 825, also known by the Champion J4C designation.

What is the electrode made of on the Champion CCH825? It uses a copper core center electrode, which improves conductivity and gives more accurate control of heat range for even wear over the plug's life.

How many spark plugs come in a CCH825 package? One Champion CCH825 spark plug is included per package.

How much does the Champion CCH825 spark plug weigh? The Champion CCH825 weighs 0.15 pounds.

Does the Champion CCH825 resist fouling and corrosion? Yes, the CCH825 is built to resist fouling and offers corrosion resistance suited to marine engine environments.

What engine application is the Champion CCH825 designed for? The Champion CCH825 is designated for outboard engine use.

Is the Champion CCH825 a genuine OEM part or aftermarket equivalent? The CCH825 is manufactured by Champion as a quality OEM-type replacement spark plug, not a generic aftermarket copy.

What UPC is associated with the Champion CCH825? The Champion CCH825 spark plug carries UPC 037551000012.

Can I install the Champion CCH825 myself? Yes, the CCH825 installs using standard spark plug replacement procedures and does not require special tools.