Recmar Mercury 150HP 3.0L EFI Poly-V Belt 4-Rib 8M0031641
REC57-8M0031641
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Mercury 150HP 4-Rib Poly-V Belt
Serial 1B905505 and above – 8M0031641
Recmar replacement 4-rib Poly-V alternator/accessory belt for the Mercury 150 hp 3.0-litre EFI four-stroke outboard family. The manufacturer application begins at serial number 1B905505.
Key Features
- 4-rib Poly-V alternator/accessory belt
- For Mercury 150 hp 3.0L EFI four-stroke outboards
- Verified serial range starts at 1B905505
- Aftermarket replacement for 8M0031641
- One belt supplied
Technical Specs
| Part type | Alternator / accessory Poly-V belt |
| Rib count | 4 |
| Engine family | Mercury 150 hp 3.0L EFI four-stroke |
| Serial range | 1B905505 and above |
| Mercury reference | 8M0031641 / 57-8M0031641 |
| Recmar SKU | REC57-8M0031641 |
Compatibility / Fitment Guide
Verified core application:
| Mercury 150 FourStroke | 3.0L EFI 150 hp outboard, serial 1B905505 and above, where 8M0031641 is specified. |
| Related 135/150 listing | Some catalogues group 135/150 EFI applications; include only the exact model/serial whose electrical/accessory diagram lists 8M0031641. |
| Required checks | Serial prefix and number, four-rib pulley layout and existing belt marking. |
| Not for | Earlier 150 hp serials, Verado families, MerCruiser sterndrives or engines using a different rib count/reference. |
Mercury serial number is the final fitment identifier. Do not rely only on the cowling horsepower decal.
OEM Cross Reference
| Mercury / Quicksilver | 8M0031641 |
| Prefixed service format | 57-8M0031641 |
| Recmar / 4Boats SKU | REC57-8M0031641 |
Cross-reference numbers identify compatible applications; they do not change the stated genuine or aftermarket supply type.
Questions & Answers
Does it fit every Mercury 150 FourStroke?
No. The verified range begins at serial 1B905505 and the parts list must specify 8M0031641.
Is this a timing belt?
No. Mercury describes it as a four-rib Poly-V alternator/accessory belt.
Is it genuine Mercury?
No. It is a Recmar aftermarket replacement.
Will it fit a MerCruiser engine?
No MerCruiser sterndrive application is claimed.
What is included?
One belt.
Verify the serial number and inspect pulleys and belt tensioner before installation.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
