Quicksilver 8M0218433 Alternator Belt V6/V8 Outboards

Quicksilver 8M0218433 Alternator Belt V6/V8 Outboards

Quicksilver 8M0218433 is a genuine Quicksilver alternator belt for select Mercury 3.4L V6 and 4.6L V8 FourStroke outboards. It replaces 8M0142251 where this updated belt is specified by the factory parts listing.

Key Features

• Genuine Quicksilver marine alternator belt
• For select Mercury 175-300 HP 3.4L V6 and 4.6L V8 FourStroke outboards
• Also used on select 250R, 300R, 450R, and 500R racing outboard applications where specified
• Reinforced construction for durability and long service life
• Installs with common shop tools
• Replaces Mercury / Quicksilver part number 8M0142251

Fitment / Product Details

• Brand: Quicksilver
• Part Number: 8M0218433
• Product: Alternator Belt
• Application Range: Select Mercury 3.4L V6 and 4.6L V8 FourStroke outboards
• UPC: 678633188237
• Country of Origin: US
• System: Belt Drive / Charging System

Reported applications include 175-200 HP 3.4L V6 serial number 2B529482 and up; 200-300 HP 4.6L V8 and ProXS serial number 2B529482 and up; 250R and 300R serial number 1E080500 and up; 450R 4.6L V8 serial numbers 1E083006 through 1E099720; and 500R V8 serial number 1E099432 and up. Verify fitment by engine model and serial number before ordering.

What’s Included

• Quicksilver 8M0218433 alternator belt

Pulleys, tensioners, alternator, hardware, tools, and related charging system components are not included unless listed separately.

Why You Should Buy

A worn or incorrect alternator belt can affect charging system performance and belt drive reliability. Using the correct Quicksilver replacement belt helps maintain proper fit and service life on compatible Mercury V6 and V8 FourStroke outboards.

Common Applications

Used on select Mercury 175-300 HP, 250R, 300R, 450R, and 500R 3.4L V6 / 4.6L V8 outboards where the factory parts listing calls for alternator belt 8M0218433.

FAQ

Does this replace 8M0142251?

Yes. Quicksilver 8M0218433 replaces part number 8M0142251 where applicable.

Does this fit every Mercury V6 or V8 outboard?

No. Belt fitment varies by model, serial number, and belt drive configuration. Verify by serial number before ordering.

Can Wakeboss help confirm fitment?

Yes. Send your engine model and serial number through Ask a Parts Pro and we can help check the correct belt.