Smart boaters fix it right the first time. This factory SCREW, (M10 x 30) ensures professional results even for DIY installation – we’ll help verify it’s the right part.

Built with Mercury Marine’s precision engineering, this component ensures reliable operation across all engine RPM ranges. Part number 4000377 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.

Why risk your Mercury engine with questionable aftermarket parts? Genuine part 4000377 is built to last, backed by Mercury Marine’s decades of marine engineering expertise and proven reliability.

Compatible Mercury Marine Engines

FITS: 100-115HP MARINER, MERCURY

• Fits MARINER, MERCURY 100-115HP engines
• Compatible HP: 100HP, 105HP, 115HP
• Covers 24 serial number ranges
• Configurations: Jet Drive, Outboard
• OEM genuine Mercury Marine part

COMPLETE SERIAL NUMBER COMPATIBILITY:

100HP Models

• 100HP OUTBOARD (Mariner): 0A722297-0D283221, 0D283222-0G760299, 9523034-9793576, 9793577-0P016999
• 100HP OUTBOARD (Mercury): 0B209468-0D283221, 0D283222-0G760299, 9523034-9793576, 9793577-0P016999

105HP Models

• 105HP JET (Mariner): 0D082000-0G303045, 0G303046-0G760299
• 105HP JET (Mercury): 0D082000-0G303045, 0G303046-0G760299

115HP Models

• 115HP OUTBOARD (Mariner): 0C100000-0D283221, 0D283222-0G760299, 9559771-9793576, 9793577-0P016999
• 115HP OUTBOARD (Mercury): 0C100000-0D283221, 0D283222-0G760299, 9559771-9793576, 9793577-0P016999

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

Verify part 4000377 works with your Mercury using our parts finder tool. Have questions? Reach out using the contact buttons at the bottom of this page — our team is here to help by text, call, or email

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