Recmar Yanmar 3JH2 3JH3 A44 Alternator V-Belt 129940-42310E
REC129940-42310E
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Regular price£19.99
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Yanmar A44 Alternator V-Belt
13 x 1140mm | 129940-42310E
Aftermarket Recmar A44 alternator-drive belt for verified Yanmar JH-series and selected industrial-engine applications.
VERIFY BEFORE ORDERING: Match Yanmar 129940-42310 / 129940-42310E, the A44 designation and the existing belt dimensions. Similar JH model names can use different belts.
Key Features
- Aftermarket replacement, not genuine Yanmar
- A44 V-belt profile
- Approximately 13 x 1140mm
- Alternator-drive application
- Supplied as one belt
Technical Specs
| Function | Alternator drive |
| Belt designation | A44 |
| Approx. dimensions | 13 x 1140mm |
| Supply | 1 aftermarket belt |
| 4Boats SKU | REC129940-42310E |
Compatibility / Fitment Guide
| Application | Verified fitment | Checks / exclusions |
|---|---|---|
| Yanmar marine | 3JH2-E; 3JH2-TE; 3JH3E | Confirm engine suffix and original belt number. |
| Additional catalogued JH coverage | Selected 3JH4E / 4JH3 variants where 129940-42310 is specified | Do not infer fitment from JH family name alone. |
| Yanmar industrial | 4TNV98-VTBZ where explicitly catalogued | Marine and industrial accessory layouts can differ. |
Final fitment check: Confirm the complete engine model, 129940-42310(E), A44 marking and 13 x 1140mm dimensions.
Part Number Cross Reference
| Yanmar | 129940-42310; 129940-42310E |
| Size reference | A44 / 13 x 1140mm |
| Recmar / 4Boats | REC129940-42310E |
Frequently Asked Questions
Is this genuine Yanmar?
No. It is a Recmar aftermarket belt.
Does it fit every 3JH engine?
No. Verify the engine suffix and part number.
Is it a seawater-pump belt?
The verified application is the alternator drive.
Inspect pulley grooves for corrosion or glazing and set tension to the Yanmar specification.
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