Alternator Belt for Yanmar 3JH2 & 3JH3, Replaces 129940-42310E, 25152-004400

New aftermarket replacement belts for the compatible Yanmar applications listed below. Use the reference numbers 129940-42310E, 25152-004400 to confirm fitment before ordering.

Key Features

• Belts for the listed marine application
• Supplied as 1 item
• Cross-reference information included for fitment checking
• New replacement part supplied by 4Boats

Technical Specs

Compatibility / Fitment Guide

Yanmar Marine Diesel Engines All 3JH2 Models & 3JH3 Models Without "A" Prefix Serial Numbers

Fitment check required: match the original part number, engine model and the physical dimensions or connections before ordering. Model names alone are not always sufficient.

Part Number Cross Reference

Frequently Asked Questions

How do I confirm compatibility?
Compare the original part number and the physical part with the information and images in this listing.

Is this supplied as a genuine Yanmar part?
No, unless the product title explicitly states otherwise. This listing is for a replacement part.

Should installation be carried out professionally?
Use the engine manufacturer’s workshop procedure. If you are unsure, ask a qualified marine engineer.