Champion L78C Marine Spark Plug, Copper Core Electrode, Champion Plug # 807

The Champion L78C Marine Spark Plug (Champion plug designation 807) is a copper-core replacement spark plug built for dependable ignition performance in marine and small engines. It uses a copper core center electrode that improves conductivity and heat control, helping the plug resist fouling and hold up to overheating under heavy engine loads. The copper core construction is engineered for accurate control of the plug's heat range, which supports longer service life and more consistent firing compared to plugs without a copper core.

Corrosion resistance is built into the design, so the L78C holds up in the humid, saltwater-exposed conditions typical of marine use. Champion built this plug to deliver dependable and proven performance, and it is manufactured to ISO and SAE standards. As an OE type replacement plug, it is intended as a direct swap where a Champion 807 (L78C) spark plug is called for, whether in a marine engine or other small engine application such as outdoor power equipment, chainsaws, or snowmobiles that share this plug across their engine lines.

Each plug ships ready to install, with no additional parts required beyond a standard spark plug socket and gap gauge for gap verification prior to installation.

Specifications

• Brand: Champion
• Manufacturer Part Number: CCH807
• Champion Plug Designation: 807
• UPC: 037551000715
• Core Material: Copper
• Electrode Type: Copper Core Center Electrode
• Standards Compliance: Built to ISO and SAE standards
• Weight: 0.15 pounds

Fitment

This is a universal Champion 807 (L78C) copper core spark plug used across multiple marine and small engine applications; it is not restricted to a single make, model, or year range.

Replaces (OEM)

The Champion L78C (807) is cross-referenced as an equivalent replacement for the following OEM part numbers: CITROEN A 212 7C, VOLVO 3551945, VAG N 017 801 3, VOLVO 3551946, VOLVO 570334, VOLVO 238624, VOLVO 238808, MINI 12 12 9 976 330, PEUGEOT 5961 07, CITROEN ZC 9457 707 U, CITROEN ZC 9852 109 U, BMW 12 12 9 976 330, VOLVO 3551943, CITROEN/PEUGEOT ZC 9852 109 U, CITROEN/PEUGEOT AZ 212 7A, VW N 017 801 3, CITROEN/PEUGEOT Super 14-8, CITROEN/PEUGEOT A 212 7 C, CITROEN/PEUGEOT 5961 07, PEUGEOT Super 14-9, CITROEN/PEUGEOT AYB 212-7, CITROEN/PEUGEOT ZC 9457 707 U, CITROEN/PEUGEOT A 212 7C, CITROEN/PEUGEOT AZ 212 7 A, CITROEN/PEUGEOT ZC 9456 074 U, PEUGEOT 5961 10, ZUENDAPP 276 07 106, MWM 6 0579 415 0007, CITROEN/PEUGEOT AYB 212 7, CITROEN/PEUGEOT ZC 9 456 074 U, CITROEN/PEUGEOT ZC 9 852 109 U, CITROEN/PEUGEOT ZC 9 457 707 U, CITROEN AYB 212-7, CITROEN AZ 212 7A, CITROEN ZC 9456 074 U, GLAS 413, BOMBARDIER 502893, SOLO 23 00 500, SOLO 23 00 103, SOLO 23 00 323, AGRIA 031 170, MERCEDES-BENZ 000 159 36 03, STEYR 902 0741, HITACHI M 43 W, STEYR 23 733, NSU 48 17 00 003.

Frequently Asked Questions

What engines does the Champion L78C spark plug fit? The Champion L78C (Champion plug 807) is a universal copper core spark plug used across a range of marine and small engine applications rather than being limited to one specific engine model.

Is this the same plug as Champion 807? Yes, L78C and 807 refer to the same Champion copper core spark plug; 807 is Champion's internal plug designation for the L78C.

What is the electrode made of on the Champion L78C? It has a copper core center electrode, which improves conductivity and gives more accurate control of the plug's heat range for longer wear life.

Does the Champion L78C resist fouling? Yes, the copper core design of the Champion L78C spark plug is built to resist fouling as well as overheating under heavy engine loads.

How does the copper core help with corrosion? The copper core electrode in the Champion L78C spark plug provides superior corrosion resistance, which is important in the humid, saltwater-exposed conditions common in marine use.

How much does the Champion L78C spark plug weigh? The Champion L78C (807) spark plug weighs 0.15 pounds.

What standards is the Champion L78C built to? Champion built the L78C spark plug to ISO and SAE standards for proven, dependable performance.

Is the Champion L78C an OE type replacement plug? Yes, the L78C is an OE type replacement spark plug intended as a direct swap wherever a Champion 807 or L78C plug is specified.

What OEM part numbers cross-reference to the Champion L78C? The Champion L78C (807) cross-references to numerous OEM numbers including Volvo 3551945, Peugeot 5961 07, Citroen A 212 7C, BMW 12 12 9 976 330, Mercedes-Benz 000 159 36 03, and others listed in its Replaces (OEM) specifications.

What is included when I order this spark plug? Each order includes one Champion L78C (807) copper core marine spark plug; no additional hardware or tools are included.

Is the Champion L78C genuine Champion or aftermarket? The L78C is a genuine Champion-brand spark plug, sold under Champion's own copper core spark plug line, not a third-party aftermarket substitute.

How is the Champion L78C different from other Champion copper core plugs like the L82C or L86C? The L78C (807) shares the same copper core construction and corrosion resistance as other Champion marine plugs such as the L82C (811) and L86C (306), but each carries its own distinct Champion plug number and part number for the specific application it is designed for.