Champion CCH931M Copper Core Marine Spark Plug (QL82C) - Replaces Bombardier 504082

The Champion CCH931M is a marine-grade spark plug built as a quality OEM replacement for outboard and marine engines. It uses a copper core electrode that increases conductivity and improves heat control, giving the plug good overall wear characteristics even under sustained load. The plug is engineered to resist fouling and offers superior corrosion resistance, two of the most common failure points for spark plugs operating in a marine environment where moisture and salt exposure are constant concerns.

Champion built the CCH931M (listed under Champion's own catalog as the QL82C, Champion Spark Plug # 931M) as an OE-type replacement, meaning it is designed to restore original engine performance rather than serve as a performance modification. It is intended to resist overheating under heavy engine loads, making it a dependable choice for boaters who run their engines hard. The plug carries UPC 037551005246 for easy identification and cross-checking against the original part being replaced.

Specifications

• Brand: Champion
• Manufacturer Part Number: CCH931M
• Champion Catalog Model: QL82C
• Champion Spark Plug Number: 931M
• Core Material: Copper
• Thread Size: RM
• Top Material Type: Metal
• Weight: 0.15 pounds
• Unit Count: 1 spark plug (individually boxed)
• UPC: 037551005246

Fitment

No specific engine make, model, or year fitment is listed for the CCH931M; verify compatibility against your engine's original spark plug number before ordering.

Replaces (OEM)

• Bombardier 504082
• Bombardier 503951
• Bombardier 437684

Frequently Asked Questions

What is the Champion CCH931M spark plug? It is a marine-grade OEM replacement spark plug from Champion, listed in Champion's own catalog as the QL82C and stamped with Champion Spark Plug # 931M.

Does the CCH931M cross-reference to any OEM numbers? Yes, the CCH931M is an equivalent replacement for Bombardier 504082, Bombardier 503951, and Bombardier 437684.

What is the electrode core made of? The CCH931M uses a copper core electrode, which increases conductivity and gives better heat control for good overall wear.

Is this spark plug resistant to corrosion? Yes, the CCH931M offers superior corrosion resistance, which matters for spark plugs used in marine engines exposed to moisture and salt air.

Will the CCH931M resist fouling? The plug is designed to resist fouling, helping maintain a dependable spark under normal marine operating conditions.

How much does the CCH931M weigh? The Champion CCH931M weighs 0.15 pounds.

How many spark plugs are included? The CCH931M ships as one individually boxed spark plug per unit.

Is the CCH931M a genuine Champion part or an aftermarket copy? The CCH931M is a genuine Champion spark plug, sold under Champion's own QL82C catalog designation and marked with Champion's # 931M stamp.

Does the CCH931M perform like the original equipment plug it replaces? Yes, it is built as an OE-type replacement designed to restore original engine performance rather than change it.

Can the CCH931M handle heavy engine loads without overheating? The CCH931M is designed to resist overheating under heavy engine loads, making it suited to sustained marine engine use.

What is the thread size on the CCH931M? The CCH931M has an RM thread size.

What is the UPC for the Champion CCH931M? The UPC for the Champion CCH931M is 037551005246.