Restore factory performance to your Mercury engine with this OEM SCREW, (.312-18 x 1.125), MANIFOLD COVER. Engineered to exact specifications for reliable operation in fresh and saltwater conditions.

Factory-built to exact Mercury Marine specifications, this component ensures reliable operation across all engine RPM ranges. Part number 53576 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 53576 delivers long-term value through superior materials and precision manufacturing.

Compatible Mercury Marine Engines

FITS: 115-140HP MARINER, MERCRUISER, MERCURY

• Fits MARINER, MERCRUISER, MERCURY 115-140HP engines
• Compatible HP: 115HP, 120HP, 140HP
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

115HP Models

• 115HP OUTBOARD (Mariner): 4865178-5430526, 5430527-5738890, 5738891-6436122, 7191308-7208847, 8057045-8062459, 8062460-8062634
• 115HP OUTBOARD (Mercury): 5314656-5600966, 5600967-6436122, 7131213-7147987, 7147988-7208847, 8061120-8061269, 3525441-4855152, 7010763-7112248, 8008665-8051949, 4855153-5314655, 7112248-7131212, 8051950-8061119

120HP Models

• 120HP OUTBOARD (Mercruiser): 5192049-6229717

140HP Models

• 140HP OUTBOARD (Mariner): 5088444-5443029

Need help finding your serial number? Check our serial number location guide for step-by-step instructions on locating it on your Mercury engine.

Verification & Support

Want to verify compatibility for part 53576? 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

Serving boaters for over 40 years. Great prices, quick delivery – your parts ship fast.