Cart
POPULAR CATEGORY
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £4.99 | 1 to 2 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 5 to 7 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 7 to 10 working days |
Product Number: 6391N-PT
The WAI 6391N-PT is a brand-new 12-volt starter motor. It is built to the Delco 37MT DD design, cross-referenced against Bosch USA SR10077X, Cummins 3604672RX, and 18 further OE references from Remy, AC Delco, IHC, Leece Neville, and others — making it a direct replacement for worn or failed original-equipment units across a range of Caterpillar Agricultural and Industrial machines.
Constructed to the 37MT direct-drive specification, the motor delivers clockwise rotation and engages via a 10-tooth pinion, matching the geometry of the original Delco fitment. Being supplied as a complete, brand-new unit means no core exchange or rebuild is required — it arrives ready to install.
The 6391N-PT is confirmed across 6 Caterpillar Ag. & Ind. applications, covering tracked loader and dozer models from the mid-1980s through to the mid-1990s, including the 931B, 931C, 935B, 935C, 951 Trax Cavator, and D3B-SA. With 20 OE cross-references on file, fitment can also be verified via OEM number using our cross-referenced catalogue.
About PartsForMachines:
PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specializing in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalog of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.
| Type | Starter Motor |
|---|---|
| Manufacturer | Delco |
| Design | 37MT DD |
| Voltage | 12V |
| Rotation | CW |
| Teeth | 10 |
| Condition | Brand New |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
Exploring the WAI Starter Motor and Alternator at Partsformachines.com Introduction: In the Plant and Agriculture sector, a starter motor and alternator are parts that ensure a machine runs smoothly. At Partsformachines.com we have partnered with WAI, a global manufacturer of auto and plant machinery parts to off...
Standard Delivery: £4.99
Delivery Estimate: 1 to 2 working days
Save Extra With 1 Offer
Compare With Similar Items
Compare with Similar products
|
|||||||||||||||
| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 3510N | 4319N | S1009 | S1165S | S1170S | S1256S | S1262S | 3510N-PG | 4162N | 4525N | 6278N | 6356N | 6360N | 6370N | 6571N |
| Voltage | 12 | 12 | 24 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 24 | 12 | 24 | 24 | 12 |
| Design | 10MT DD | DD | PG260M PMGR | 10MT DD | 10MT DD | 37MT Series | 42MT DD | 42MT DD | 42MT DD | 28MT OSGR | |||||
| Manufacturer | Delco | Delco | Delco | Delco | Delco | Delco | Delco | Delco | Delco | Delco | |||||
| Power | 1.5 | 9.0 | 0.8 | 1.8 | 2.0 | 1.8 | 1.4 | 1.4 | 7.8 | ||||||
| Rotation | CW | CW | CW | CCW | CW | CW | CW | CW | CW | CW | CW | CW | CW | CW | CW |
| Teeth | 9 | 10 | 11 | 8 | 9 | 11 | 11 | 11 | 9 | 10 | 10 | 11 | 12 | 11 | 12 |
A. The WAI 6391N-PT fits Caterpillar Ag. & Ind. models including the 931B, 931C, 935B, 935C, 951 Trax Cavator, and D3B-SA — 6 applications in total. Use the selection widget to match your make and model, or search our cross-referenced catalogue by OEM number or machine model. Every fitment shown is backed by our Fit Guarantee.
A. Yes. The WAI 6391N-PT carries Bosch USA SR10077X as a direct cross-reference, along with Cummins 3604672RX, Remy 10461069, Remy 10461108, Remy 1990312, and 15 further OE references — 20 in total. Search our catalogue by your OEM number to confirm the match, or ask Simon if you need help.
A. Yes — Cummins 3604672RX is one of 20 OE cross-references listed for the WAI 6391N-PT. The part also replaces Remy 63110, Remy 63134, AC Delco 323834, AC Delco 323884, IHC 1688615C91, IHC 2508912C91, Leece Neville 35259840, and others. Use the cross-referenced catalogue to look up your existing part number and confirm fitment.
A. It is a brand-new 12-volt starter motor built to the Delco 37MT direct-drive design, with clockwise rotation and a 10-tooth pinion. Being brand new, no core return or surcharge applies.
A. Yes. The 6391N-PT has 20 OE cross-references on file, including references from Bosch, Cummins, Remy, AC Delco, IHC, Leece Neville, Reliance, Eagle, and Unipoint. Enter your existing number into our cross-referenced catalogue, or ask Simon for confirmation. Every OE cross-reference shown is backed by our Fit Guarantee.
A. Yes. Every vehicle and OE cross-reference shown for this part is checked against manufacturer data and backed by our Fit Guarantee. If it is not right, our Fit Guarantee or hassle-free returns have you covered.
A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.
By sharing your email, you agree to our privacy policy & terms of service
Question about this product? Click here
