Kubota L-Series, M4700, M5400, KX121-2 & KX161-2 Alternator, 12V 40A | Genuine Kubota 5H937-42700
This is a new, genuine Kubota alternator assembly, part number 5H937-42700, rated 12 V and 40 A. It is listed for Kubota L2900, L3010, L3300, L3410, L3600, L3710 and L4200 tractors, the L35, M4700 and M5400 tractors, and KX121-2 and KX161-2 excavators. It is also listed for the Kubota D1503 engine.
Replace an alternator when charging voltage stays low with a good battery and clean connections, when the charge light stays on, or when the bearing is noisy. Test output at the alternator and check the belt and pulley alignment before you condemn it.
Confirm Fitment Before You Order
Some aftermarket lists also show this alternator on L4310, L4610 and L48 tractors, which Kubota’s own list does not include, so check before ordering for those models. Send us the number from your old alternator, or your machine model and serial number, and we will confirm the match. Call 530-668-0818 and we will confirm the exact match at no charge before anything ships.
Specifications
| Part number | 5H937-42700 |
| Brand | Kubota |
| Condition | New, genuine, in original packaging |
| Type | Alternator assembly |
| System voltage | 12 V |
| Output | 40 A |
| Price | $368.00 |
| Shipping weight | 7 lb |
Fits / Applications
- Kubota L2900F, L2900DT and L2900DT-GST tractors
- Kubota L3010 tractors (F, DT, GST, HST)
- Kubota L3300F, L3300DT and L3300DT-GST tractors
- Kubota L3410 tractors (DT, GST, HST)
- Kubota L3600DT and L3600DT-GST tractors
- Kubota L3710 tractors (DT, GST, HST)
- Kubota L4200F, L4200F-GST, L4200DT and L4200DT-GST tractors
- Kubota L35
- Kubota M4700 and M4700DT tractors
- Kubota M5400, M5400DT and M5400DT-N tractors
- Kubota KX121-2 excavator
- Kubota KX161-2 excavator
- Kubota D1503 engine
Disconnect the battery first. Check the belt, belt tension and pulley alignment, clean the ground path, and confirm the plug and terminals match your harness before final tightening.
Part Numbers & Cross Reference
Kubota replaced numbers (Messicks) 34070-75600, 34070-75602 · Kubota replaced numbers (Messicks) 5H730-42500, 5H730-42502, 5H730-42503, 5H730-42504
Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.
Why Buy From Valley Fuel Injection
We are an authorized Kubota dealer and a diesel fuel-injection shop in Woodland, CA, working on diesel engines since 1993. When you call, you talk to people who know Kubota engines, and we check the part number against your engine serial or machine model before anything ships, so the right part arrives the first time. See our Kubota engine sales, parts and service.
Ships UPS Ground anywhere in the lower 48. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax is additional; shipping is calculated at checkout. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
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