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| 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 | £5.49 | 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: 12772N
The WAI 12772N is a brand-new 12V 40A alternator. It is built to Denso IR/IF specification, cross-referenced directly against Denso, Yanmar, and Delco Remy original-equipment numbers. It is designed as a direct replacement for applications originally fitted with the Denso 101211-1380 or equivalent, making it a reliable choice when sourcing by OE number rather than by vehicle.
Constructed to internal-regulator, internally-fused (IR/IF) design, the 12772N delivers a 40-amp output at 12 volts — a compact output rating suited to the agricultural and plant machinery for which the Yanmar reference 129240-77200 is widely associated. Clockwise rotation and a groove-pulley configuration are confirmed, ensuring correct belt engagement on applications where these parameters are specified.
WAI's remanufacturing and new-build expertise means the 12772N is engineered to meet the dimensional and electrical tolerances of the Denso original, with OE cross-references verified so buyers can order with confidence against a known part number.
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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 | Alternator |
|---|---|
| Manufacturer | Denso |
| Design | IR/IF |
| Voltage | 12V |
| Output | 40A |
| Rotation | CW |
| Pulley | Groove Pulley |
| Condition | Brand New |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
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Standard Delivery: £5.49
Delivery Estimate: 1 to 2 working days
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| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 13919N | 22925N | 23328N | 13592N | 13919 | 21881N | 23298N | 23820N | A6018 | A6025 | A6052 | A6061 | A6063 | A6077 | A6079 |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | |
| Output Current | 140 | 60 | 125 | 50 | 130 | 120 | 150 | 80 | 100 | 100 | 130 | 120 | 105 | ||
| Design | IR/IF | IR/IF | ER/IF | IR/IF | IR/IF | IR/IF | |||||||||
| Manufacturer | Denso | Denso | Denso | Denso | Denso | Denso | Denso | ||||||||
| Pulley | S6 | S6 | V1 | SC5 | SC6 | AFP | AFP | AFP | AFP | AFP | AP | AFP | |||
| Rotation | CW | CW | CW | CW | CW | ||||||||||
A. Yes. The WAI 12772N is cross-referenced against two Denso OE numbers: Denso 101211-1380 and Denso OEM 1012111380. Both references are verified against this part. To confirm suitability for your specific application, search our cross-referenced catalogue by OEM number or ask Simon.
A. Yes. The WAI 12772N carries two verified Yanmar cross-references: YANMAR 129240-77200 and Yanmar 12924077200. If you are sourcing by Yanmar OE number, this part is the confirmed match. Use the selection widget or search by OEM number to verify fit for your machine, and every OE cross-reference shown is backed by our Fit Guarantee.
A. Yes. Delco Remy DRA0186 is one of the five verified OE cross-references held for the WAI 12772N. Search our cross-referenced catalogue by that number or ask Simon to confirm it suits your application.
A. The 12772N is a 12V, 40A alternator built to Denso IR/IF (internal regulator, internally fused) design. Rotation is clockwise (CW) and the pulley is a groove type. It is supplied brand new.
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.
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