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.
Part Number 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.
Frequently Asked Questions
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.
