Engine acting up? Don’t let a faulty part keep you off the water. This genuine Mercury Marine SCREW, (.437-14 x 1.75), Trim Tab to Gear Housing restores reliable performance and gets you back to what you love.

Designed and manufactured to Mercury Marine OEM standards, this housing assembly ensures reliable operation across all engine RPM ranges. Part number 66024 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.

Factory parts exist for a reason — they work. Part 66024 undergoes rigorous Mercury Marine quality testing that aftermarket manufacturers skip. The result? Reliable performance season after season.

Compatible Mercury Marine Engines

FITS: 115-140HP MARINER, MERCURY

• Fits MARINER, MERCURY 115-140HP engines
• Compatible HP: 115HP, 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

140HP Models

• 140HP OUTBOARD (Mariner): 5088444-5443029
• 140HP OUTBOARD (Mercury): 5327663-5625107

Looking for your Mercury engine serial number? Our helpful guide shows you exactly where serial numbers are located on different engines.

Verification & Support

Want to verify compatibility for part 66024? 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

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