Smart boaters fix it right the first time. This factory COWL LATCH ASSEMBLY SN# 0R403398 & Below ensures professional results even for DIY installation – we’ll help verify it’s the right part.

Engineered to Mercury’s rigorous OEM standards, this component ensures reliable operation across all engine RPM ranges. Part number 8M0063135 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.

Smart boat owners know: buying cheap parts twice costs more than buying genuine Mercury once. Part 8M0063135 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS: 2-20HP MARINER, MERCURY

• Fits MARINER, MERCURY 2-20HP engines
• Compatible HP: 2HP, 3HP, 10HP, 15HP, 20HP
• Covers 12 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

2HP Models

• 2HP OUTBOARD (Mariner)
• 2HP OUTBOARD (Mercury)

3HP Models

• 3HP OUTBOARD (Mariner)
• 3HP OUTBOARD (Mercury)

10HP Models

• 10HP OUTBOARD (Mercury)

15HP Models

• 15HP OUTBOARD (Mariner)
• 15HP OUTBOARD (Mercury)

20HP Models

• 20HP OUTBOARD (Mariner)
• 20HP OUTBOARD (Mercury)

Don’t know where your serial number is? Our quick reference guide shows exactly where to find it on Mercury Marine engines.

Verification & Support

Not sure if part 8M0063135 fits your engine? Try our parts finder tool — it’s quick and easy. Need expert help? Contact us using the buttons at the bottom of this page – text, call, or email, whatever works best for you

Four decades of marine parts experience. Best prices guaranteed – free shipping on orders over $100.