57865615Q05 Mercury MerCruiser Serpentine Belt | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Serpentine Belt - Part Number: 57-865615Q05

Genuine Quicksilver/MerCruiser serpentine belt for selected 2001 and newer MerCruiser MIE and Tow Sports engines with standard cooling and the 4-1/4" idler pulley. This OEM 2233mm belt is designed to drive the accessory system correctly and maintain reliable cooling and charging performance.

⚙️ Key Features

• Genuine Quicksilver/Mercury OEM serpentine belt

• 2233mm belt length

• Designed for MerCruiser MIE and Tow Sports standard-cooling applications

• Suits applications with the 4-1/4" idler pulley

• Direct replacement for earlier 865615 and 865423 belt references

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 57-865615Q05 → Supersedes 57-865615005

• 57-865615005 → Supersedes 57-865423005

• 57-865423005 earlier OEM reference

OEM / Related Numbers:

• 57-865615Q05

• 865615Q05

• 57865615Q05

• 57-865615005

• 865615005

• 57-865423005

• 865423005

• 8638765

• 6PK2233

Aftermarket / Verified Equivalents:

• Sierra: 18-15121

🚤 Compatibility

Commonly used on:

• MerCruiser MIE inboard engine serpentine belt systems

• MerCruiser Tow Sports engine accessory drive systems

• MerCruiser standard-cooling applications using the 4-1/4" idler pulley

Typically suits:

• Engine models:

• MerCruiser MIE engines, 2001 and newer, standard cooling, 4-1/4" idler pulley

• MerCruiser Tow Sports engines, 2001 and newer, standard cooling, 4-1/4" idler pulley

• MerCruiser 5.7L / 350 CID MIE standard-cooling applications where 57-865615Q05 is specified

• MerCruiser 350 MAG MPI Tow Sports standard-cooling applications where 57-865615Q05 is specified

• MerCruiser 6.2L Tow Sports standard-cooling applications where 57-865615Q05 is specified

• MerCruiser inboard / Tow Sports accessory drive applications replacing 6PK2233, 865615005, 865423005 or 8638765

• HP Range: Application dependent across MerCruiser MIE and Tow Sports petrol engine packages

• Engine Type: MerCruiser petrol inboard / Tow Sports serpentine accessory drive system

• Year Range: 2001 and newer, where fitted with standard cooling and the 4-1/4" idler pulley

🔌 Function

The serpentine belt drives the accessory pulleys on compatible MerCruiser engines. Correct belt length and condition help maintain alternator operation, water pump drive and accessory system reliability.

Common signs of failure:

• Belt squeal or chirping

• Cracked or glazed belt ribs

• Fraying, splitting or missing belt material

• Charging system warning

• Overheating due to accessory drive slip

• Belt dust around pulleys

• Belt walking off the pulley path

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging