Take control of your Mercury maintenance with this genuine SCREW, MANIFOLD. Straightforward replacement that delivers factory results without shop labor costs.

Built with Mercury Marine’s precision engineering, 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.

Smart boat owners know: buying cheap parts twice costs more than buying genuine Mercury once. Part 43749 delivers long-term value through superior materials and precision manufacturing.

 

Compatible Mercury Marine Engines

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 Mercury engine.

Verification & Support

Not sure if part 43749 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

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