Genuine Quicksilver MerCruiser V-Belt 39.5in 57-862054Q
RM57-862054Q
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Genuine MerCruiser V-Belt
39½-inch / 1003 mm reference 57-862054Q
Genuine Quicksilver/MerCruiser V-groove belt measuring approximately 39½ inches (1003 mm). It is used as an alternator/water-pump accessory belt on specified MerCruiser configurations.
Key Features
- Genuine Quicksilver/MerCruiser service belt
- V-groove accessory-drive profile
- 39½-inch / 1003 mm catalogue length
- Used on specified 2.5L/3.0L and high-mounted-alternator applications
- Supersedes earlier 57-862054
Technical Specs
| Part type | Alternator / water-pump V-belt |
| Length | 39½ in / 1003 mm |
| Mercury reference | 57-862054Q |
| Earlier reference | 57-862054 |
| 4Boats SKU | RM57-862054Q |
| Supply type | Genuine Quicksilver/MerCruiser |
Compatibility / Fitment Guide
Documented application groups:
| 2.5L / 3.0L Alpha | Compatible carburetted applications from serial 0B531854 upward where the parts catalogue specifies 57-862054Q. |
| 3.0L MPI EC | Compatible versions whose accessory-drive diagram specifies this belt. |
| 1999–2001 V6/V8 Alpha | 305/350 CID engines with the documented high-mounted alternator arrangement using the same 1003 mm belt. |
| Required checks | Engine serial number, alternator position, pulley count/diameter, belt route and original part reference. |
| Not for | Serpentine systems or any low/high-mounted accessory arrangement listing a different belt. |
MerCruiser belt charts are configuration-specific. Use the engine serial and accessory-drive diagram as final confirmation.
Part Number Cross Reference
| Mercury / MerCruiser | 57-862054Q |
| Earlier Mercury reference | 57-862054 |
| Unprefixed reference | 862054 / 862054Q |
| 4Boats SKU | RM57-862054Q |
Cross-reference numbers identify compatible applications; they do not change the stated genuine or aftermarket supply type.
Frequently Asked Questions
Is this genuine Quicksilver?
Yes, the existing product record identifies it as the original MerCruiser/Quicksilver product.
Does it fit every 3.0L MerCruiser?
No. Confirm the serial range and pulley layout.
Why are V6/V8 applications also listed?
MerCruiser used the same 1003 mm reference on certain 1999–2001 high-mounted-alternator layouts.
What is included?
One V-belt.
Is it a serpentine belt?
No. It is a conventional V-groove belt.
Photograph the belt routing before removal and set tension to the MerCruiser service specification.
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