Champion QL78C Marine Spark Plug, Replaces Bombardier 502179

The Champion QL78C is a marine spark plug built as a quality OEM-type replacement for outboard and sterndrive engines. It features a copper core electrode that improves conductivity and heat control for good overall wear, helping the plug resist fouling and deliver dependable, proven performance across heavy engine loads. The copper-core design gives strong corrosion resistance, so the plug holds up in the wet, salt-exposed conditions typical of marine use. Champion also catalogs this plug under the designation Champion Spark Plug # 883, so buyers may see it listed either as QL78C or as plug number 883 -- both refer to the same part. It is offered as a direct OEM cross-reference for Bombardier engine applications using OEM part number 502179, making it a straightforward swap when replacing a worn or fouled factory plug. As a maintenance item, it is intended for routine spark plug replacement to keep ignition performance consistent and to guard against overheating during sustained heavy-load running.

Specifications

• Brand: Champion
• Manufacturer Part Number: QL78C
• Champion Plug Number: 883
• UPC: 037551002436
• OEM Cross Reference: Bombardier 502179
• Electrode Core Material: Copper
• Weight: 0.15 pounds
• Product Dimensions: 9.35 x 5.51 x 3.07 inches

Fitment

Listed as a Tohatsu outboard spark plug and cross-referenced as a direct OEM replacement for Bombardier engines specifying part number 502179.

Replaces (OEM)

• 502179 (Bombardier)

Frequently Asked Questions

What is the Champion QL78C spark plug? It is a marine spark plug with a copper core electrode for increased conductivity and heat control, sold under the Champion designation QL78C and also cataloged as Champion Spark Plug # 883.

Does the QL78C cross-reference to an OEM number? Yes, the Champion QL78C is a direct OEM cross-reference for Bombardier part number 502179.

Is Champion Spark Plug # 883 the same part as the QL78C? Yes, both refer to the same Champion marine spark plug; 883 is the Champion plug number and QL78C is the manufacturer part number.

What material is the electrode made of? The QL78C uses a copper core electrode, which provides increased conductivity and heat control for good overall wear.

How much does this spark plug weigh? The Champion QL78C weighs 0.15 pounds.

What are the dimensions of the QL78C spark plug? The Champion QL78C measures 9.35 x 5.51 x 3.07 inches.

Is the Champion QL78C resistant to fouling and corrosion? Yes, the QL78C is designed to resist fouling and offers superior corrosion resistance, which is important in marine environments.

Can this plug handle heavy engine loads? The QL78C is designed to resist overheating under heavy engine loads, making it suitable for sustained marine engine use.

What engines is the Champion QL78C intended for? The QL78C is listed as a Tohatsu outboard spark plug and is also cross-referenced as an OEM replacement for Bombardier engines calling for part number 502179.

Is the Champion QL78C a genuine OEM part or aftermarket? The Champion QL78C is manufactured by Champion as a quality OEM-type replacement plug, not a generic aftermarket copy.

What UPC is associated with the Champion QL78C? The Champion QL78C carries UPC 037551002436.