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: 12791N
The WAI 12791N is a brand-new 12V 175A alternator. It is manufactured by Letrika to an IR/IF internal-regulator design, supplied without pulley. It is a direct replacement for Delco Remy, Iskra and Letrika original-equipment units across a sizeable spread of heavy agricultural and industrial machines — 46 verified applications in total, spanning Case, Steiger, New Holland Industrial and Massey Ferguson.
Built to Letrika's (Iskra) IR/IF specification, this unit carries internal regulation, which eliminates the need for an external voltage regulator and simplifies installation on the machines for which it is listed. At 175A output on a 12V system it is rated for the high-demand electrical loads common to large-frame articulated tractors and self-propelled sprayers. The unit is supplied without a pulley, so the original pulley is retained and refitted — a practical arrangement that ensures correct belt alignment is preserved.
Verified fitment includes Case Patriot self-propelled sprayers (3330 and 4420 series, 2006–2013), Case Steiger high-horsepower tractors (335 through 535, 2008–2013), New Holland Industrial models and a Massey Ferguson application. Cross-references span 43 OE numbers across Delco Remy, Iskra and Letrika catalogues, making reverse-lookup straightforward.
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| Type | Alternator |
|---|---|
| Manufacturer | Letrika |
| Design | (Iskra) IR/IF |
| Voltage | 12V |
| Output | 175A |
| Pulley | Without Pulley |
| 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...
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| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 13152N | A9154S | A9155 | A9221 | 12816N | A9055 | A9055(LETRIKA) | A9158 | A9158(LETRIKA) | A9161(LETRIKA) | A9190 | A9214 | A9214(LETRIKA) | A9219 | A9246(LETRIKA) |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 24 | 24 | |||||||
| Output Current | 65 | 95 | 120 | 65 | 95 | 120 | 50 | 100 | |||||||
| Design | IR/EF | (Iskra) IR | |||||||||||||
| Manufacturer | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | ||||
| Pulley | V1 | AP | AP | AP | AP | Without Pulley | |||||||||
| Rotation | CW | CW | |||||||||||||
A. This alternator fits 46 verified applications across Case (21 applications), Steiger (16 applications), New Holland Industrial (8 applications) and Massey Ferguson (1 application). Named examples include the Case 3330 Patriot (2009–2013), Case 4420 Patriot (2006–2009), Case Steiger 335, 385, 435, 485 and 535 (2008–2011) and Case Steiger 450 (2011–2013). Use the selection widget to match your exact make, model and engine variant, or search our cross-referenced catalogue by machine model — every fitment shown is backed by our Fit Guarantee.
A. Yes. Delco Remy DRA1333 is one of the 43 OE cross-references verified for the WAI 12791N. It also cross-references Iskra numbers including IA1271, IA1344, IA1345, IA1349, IA1361, AAN5153, AAN5170, AAN5331, AAN5537, AAN5711, AAN5712, AAN5713, AAN5721 and AAN8149, as well as Letrika numbers including 11.204.172, 11203196, 11203255, 11203482, 11203739, 11203740, 11203741, 11203761 and 11204237, among others. If your original number is not in this list, search our catalogue by OEM number or ask Simon to confirm the match.
A. The WAI 12791N carries 43 OE references in total. Iskra references in the sample include Iskra/Letrika tech 11204172, commercial references IA1271, IA1344, IA1345, IA1349 and IA1361, family reference AAN5331, and individual Iskra numbers AAN5153, AAN5170, AAN5537, AAN5711, AAN5712, AAN5713, AAN5721 and AAN8149. Letrika references include 11.204.172, 11203196, 11203255, 11203482, 11203739, 11203740, 11203741, 11203761 and 11204237. The full list of 43 references is available in our cross-referenced catalogue — search by your OE number to confirm.
A. The WAI 12791N is supplied without a pulley. Your original pulley is removed and refitted to the new unit during installation. This approach preserves correct belt alignment for your specific application and means no additional pulley purchase is required. Ensure the original pulley is in good condition before refitting.
A. IR/IF stands for Internal Regulator / Internal Fan. Internal regulation means the voltage regulator is built into the alternator body rather than mounted separately on the machine — simplifying installation and reducing external wiring. This is the original design specification for the Letrika (Iskra) units this alternator replaces across the listed Case, Steiger, New Holland Industrial and Massey Ferguson applications.
A. Yes, confirmed applications include Case Steiger 335, 385, 435, 485 and 535 (2008–2011), Case Steiger 450 (2011–2013), Case 3330 Patriot (2009–2013) and Case 4420 Patriot (2006–2009), among the 21 Case and 16 Steiger listings covered. Use the selection widget with your exact model year and engine variant to confirm your specific machine, as coverage may vary by configuration.
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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