Champion L78V Marine Spark Plug CCH833M, Copper Core, Replaces Bombardier 507992/509922/389471

The Champion L78V marine spark plug (CCH833M) is a quality OEM-type replacement plug built for marine engines that see heavy loads and demanding duty cycles. It uses a copper core center electrode that improves conductivity and gives precise heat range control, so the plug wears evenly and delivers dependable, proven performance over time. The design resists fouling, a common problem in marine ignition systems exposed to rich fuel mixtures and inconsistent run times, and it carries superior corrosion resistance to stand up to the humid, saltwater-adjacent environment around a boat engine. The plug is engineered to resist overheating under sustained heavy engine loads, helping prevent pre-ignition and detonation that can damage pistons and valves over time. Built to ISO and SAE standards, the Champion L78V is manufactured to the same specifications automotive and marine engine builders rely on for consistent, repeatable ignition performance. It is sold as a single plug (1 count), making it easy to order the exact quantity needed for a full tune-up or a single-cylinder replacement. Buyers replacing worn, fouled, or corroded spark plugs on marine engines can use the Champion L78V as a direct equivalent to the Bombardier part numbers it replaces, without hunting down original equipment through other channels.

Specifications

• Brand: Champion
• Manufacturer Part Number: CCH833M
• Champion Spark Plug Number: 833M
• Thread Size: 14mm
• Core Material: Copper
• Top Material Type: Copper
• UPC: 037551005147
• Unit Count: 1 spark plug
• Weight: 0.15 pounds

Replaces (OEM)

• Bombardier 507992
• Bombardier 509922
• Bombardier 389471

Frequently Asked Questions

What does the copper core electrode in the Champion L78V spark plug do? The copper core center electrode in the Champion L78V (CCH833M) spark plug increases conductivity and allows for precise control of the heat range, which improves overall wear and keeps the plug firing consistently under load.

Is the Champion CCH833M a direct OEM replacement or an aftermarket copy? The Champion L78V (CCH833M) is manufactured by Champion, the original spark plug maker, and is built to ISO and SAE standards as a quality OEM-type replacement plug rather than a third-party aftermarket copy.

What thread size does the Champion L78V spark plug use? The Champion L78V spark plug, part number CCH833M, has a 14mm thread size.

Which OEM part numbers does the Champion L78V spark plug replace? The Champion L78V (CCH833M) replaces Bombardier part numbers 507992, 509922, and 389471.

How much does the Champion CCH833M spark plug weigh? The Champion L78V spark plug, CCH833M, weighs 0.15 pounds.

Is the Champion L78V spark plug made for marine engines? Yes, the Champion L78V (CCH833M) is a marine spark plug designed to resist overheating under heavy engine loads typical of marine applications.

How many spark plugs are included when ordering CCH833M? Each order of the Champion L78V spark plug, CCH833M, includes 1 spark plug (unit count of 1).

Does the Champion L78V spark plug resist fouling and corrosion? Yes, the Champion L78V (CCH833M) is designed to resist fouling and offers superior corrosion resistance, both important in the damp, salt-exposed conditions marine engines run in.

What is the UPC for the Champion L78V spark plug? The UPC for the Champion L78V spark plug, part number CCH833M, is 037551005147.

Can the Champion L78V spark plug handle heavy engine loads without overheating? Yes, the Champion L78V (CCH833M) is specifically designed to resist overheating under heavy engine loads while maintaining dependable performance.

What material is the Champion L78V spark plug's electrode made from? The Champion L78V spark plug, CCH833M, uses a copper core electrode for its center electrode material.