Champion UL77V Marine Spark Plug (Champion 831) for Evinrude Outboard Engines

The Champion UL77V is a marine-grade spark plug built as a quality OEM replacement, identified under Champion's own numbering as Spark Plug # 831. It uses a copper core electrode that improves conductivity and heat control, helping the plug wear evenly and resist fouling over time. Champion engineered this plug to resist overheating under the sustained heavy loads that marine engines place on ignition components, while its construction provides superior corrosion resistance in the humid, saltwater-exposed environment typical of boating use.

This spark plug is categorized by the store as an Evinrude outboard spark plug, making it suited for use in Evinrude outboard engines. It delivers dependable, proven performance as a direct-fit OEM-style replacement, with a 14mm thread size and metal top construction. Whether you are performing routine engine maintenance or replacing a worn or fouled plug, the Champion UL77V/831 offers the reliability boaters expect from a Champion ignition component.

Specifications

• Brand: Champion
• Manufacturer Part Number: CCH831
• Champion Catalog Number: UL77V
• Champion Spark Plug Number: 831
• UPC: 037551000708
• Core Material: Copper
• Thread Size: 14mm
• Top Material Type: Metal
• Weight: 0.15 pounds
• Application Category: Evinrude Outboard Spark Plugs

Fitment

Evinrude outboard engines.

Replaces (OEM)

• 831

Frequently Asked Questions

What engines is the Champion UL77V spark plug designed for? The Champion UL77V, listed under Champion Spark Plug # 831, is categorized for use in Evinrude outboard engines.

Is this the same plug as Champion 831? Yes, the Champion UL77V and Champion Spark Plug # 831 are the same plug, just referenced by two different Champion numbering systems.

What is the electrode made of? This spark plug features a copper core electrode, which provides increased conductivity and better heat control for good overall wear.

What thread size does this spark plug use? The Champion UL77V has a 14mm thread size.

How much does this spark plug weigh? The Champion UL77V spark plug weighs 0.15 pounds.

Does this spark plug resist fouling? Resisting fouling is one of the key traits of the Champion UL77V, along with superior corrosion resistance for marine environments.

Is this an OEM or aftermarket spark plug? The Champion UL77V (Champion 831) is sold as a quality OEM replacement spark plug rather than a generic aftermarket part.

What material is the top of the plug made from? The top material type of the Champion UL77V spark plug is metal.

Why does this plug resist corrosion better than standard plugs? Champion built the UL77V with superior corrosion resistance specifically to hold up in marine conditions where engines face more moisture and salt exposure than typical automotive use.

How many spark plugs come in the package? The Champion UL77V (Champion 831) spark plug is supplied as a single spark plug.

Can this spark plug handle heavy engine loads? Yes, the Champion UL77V is designed to resist overheating under heavy engine loads, which supports dependable performance over time.

What UPC is associated with this spark plug? The Champion UL77V (Champion 831) carries UPC 037551000708.