Don’t gamble with your Mercury’s reliability. This genuine **LEAD ASSEMBLY-SPARK PLUG** ensures long-term performance and protects your investment in quality marine power.

Engineered specifically for Mercury Marine engines, this component ensures reliable operation across all engine RPM ranges. Part number 813715A12 is manufactured to exact Mercury Marine factory specifications for precision installation and optimal performance. Constructed from premium marine-grade materials designed to withstand harsh saltwater and freshwater environments.

Don’t risk your Mercury engine with untested aftermarket copies. OEM part 813715A12 is manufactured to Mercury Marine’s exact specifications, ensuring compatibility and performance that inferior alternatives simply can’t match.

FITS: 30-40HP MARINER, MERCURY

• Fits MARINER, MERCURY 30-40HP engines
• Compatible HP: 30HP, 40HP
• Covers 8 serial number ranges
• Configurations: Jet Drive, Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

30HP Models

• 30HP JET (Mariner): 0C159200-0G589999
• 30HP JET (Mercury): 0C159200-0G589999

40HP Models

• 40HP OUTBOARD (Mariner)
• 40HP OUTBOARD (Mercury)

Looking for your engine serial number? Our helpful guide shows you exactly where Mercury places serial numbers on different models.

Want to verify compatibility for part 813715A12? Use our parts finder tool for instant confirmation. Still have questions? No problem – use the contact buttons at the bottom of this page to reach us by text, call, or email.

40+ years of marine expertise. Low prices on factory parts with free shipping on orders over $100 (restrictions apply).