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

Built to Mercury’s exacting factory standards, this component ensures reliable operation across all engine RPM ranges. Part number 43749 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.

Aftermarket parts might save a few dollars upfront, but genuine Mercury Marine part 43749 saves you money long-term by lasting years instead of months. Factory precision means perfect installation – no modifications, no surprises.

 

FITS: 3-350HP MERCRUISER

• Fits MERCRUISER 3-350HP engines
• Compatible with 13 different HP configurations
• Covers 24 serial number ranges
• Configurations: Outboard
• OEM genuine Mercury Marine part

 

COMPLETE SERIAL NUMBER COMPATIBILITY:

3HP Models

• 3HP OUTBOARD (Mercruiser)

175HP Models

• 175HP OUTBOARD (Mercruiser): 0B527955-0B773242

185HP Models

• 185HP OUTBOARD (Mercruiser): 0A331455-0B527954

200HP Models

• 200HP OUTBOARD (Mercruiser): 0B525982-0B774444, 6218462-0B525981

205HP Models

• 205HP OUTBOARD (Mercruiser): 0A331455-0B527954, 0B527955-0B775129

228HP Models

• 228HP OUTBOARD (Mercruiser): 6218462-0B525981

230HP Models

• 230HP MIE (Mercruiser): 5907058-0B522505, 0B522506-0B788151
• 230HP OUTBOARD (Mercruiser): 6218462-0B525981, 0B525982-0B773739

260HP Models

• 260HP OUTBOARD (Mercruiser): 6218462-0B525981, 0B525982-0B773739, 6218462-0B525981, 0B525982-0B773304, 5907058-0B522505, 0B522506-0B788196

262HP Models

• 262HP MAG (Mercruiser): 0F803800-0K999999

320HP Models

• 320HP OUTBOARD (Mercruiser): 0A543604-0B157602, 0B157603-0C622418

330HP Models

• 330HP OUTBOARD (Mercruiser): 6083145-0B816540

340HP Models

• 340HP OUTBOARD (Mercruiser): 5889914-0B788365

350HP Models

• 350HP MAG (Mercruiser): 0D505450-0K040399

 

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

Want to verify compatibility for part 43749? 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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