Champion L87YC Marine Spark Plug for Evinrude Outboards, Copper Core, Plug Number 312

The Champion L87YC is a marine spark plug built as a quality OEM-style replacement for outboard engines. It uses a copper core center electrode that increases conductivity and improves heat control, which helps the plug wear evenly over its service life. The design is engineered to resist overheating under heavy engine loads, a common stress point for marine outboards that run at sustained high RPM. Champion built this plug to resist fouling and to provide superior corrosion resistance, both important in the wet, salt-exposed environment outboard engines operate in.

This plug carries Champion's own plug number 312 and is cataloged for Evinrude outboard engines. It delivers dependable, proven performance and is a straightforward drop-in replacement when your outboard's plugs are due for service. The copper core construction is the same technology used across Champion's marine plug lineup, chosen for its reliable spark delivery and resistance to fouling in two-stroke and four-stroke outboard applications.

Specifications

• Brand: Champion
• Manufacturer Part Number: CCH312
• Champion Plug Number: 312
• Plug Designation: L87YC
• Core Material: Copper
• Thread Size: Regular Metric
• UPC: 037551000357
• Weight: 0.15 pounds
• OEM Equivalent Part Number: CHA312
• Recommended Application: Evinrude outboard engines

Fitment

This spark plug is cataloged for use in Evinrude outboard engines.

Replaces (OEM)

• CHA312

Frequently Asked Questions

What engines does the Champion L87YC spark plug fit? The Champion L87YC, plug number 312, is cataloged for Evinrude outboard engines.

Is CCH312 the same as Champion plug number 312? Yes, CCH312 is the part number for the Champion L87YC marine spark plug, which Champion identifies as plug number 312.

What is the OEM equivalent for the Champion L87YC? CHA312 is the OEM equivalent part number for the Champion L87YC (plug number 312) spark plug.

What is the electrode material in this spark plug? The Champion L87YC uses a copper core center electrode, which increases conductivity and gives more precise control over heat range.

How much does this spark plug weigh? The Champion L87YC (CCH312) weighs 0.15 pounds.

Does this plug resist corrosion in a marine environment? Yes, the Champion L87YC is built with superior corrosion resistance, which matters for outboard engines exposed to moisture and salt air.

Will this spark plug resist fouling during normal use? The Champion L87YC is designed to resist fouling, one of the traits Champion built into this marine plug line.

Is the Champion L87YC an OEM or aftermarket spark plug? The Champion L87YC (CCH312) is a Champion-branded OEM replacement plug, not a generic aftermarket copy.

Can this spark plug handle heavy engine loads? The copper core design of the Champion L87YC is engineered to resist overheating under heavy engine loads, which is common in sustained high-RPM outboard use.

What thread size does the Champion L87YC use? The Champion L87YC (plug number 312) has a regular metric thread size.

How many spark plugs come with this listing? This listing is for the Champion L87YC spark plug, part number CCH312.

How does the L87YC compare to other Champion marine plugs? The L87YC (plug number 312) shares the same copper core electrode technology used across Champion's marine spark plug lineup, differing mainly in the specific engine application it is cataloged for.