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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 | £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: 8720N
The WAI 8720N is a brand-new 12V 70A alternator. It is built to the Delco 11SI Series IR/IF design, replacing original-equipment numbers including Delco 19020203, Cummins 3972729, and Remy 19020207. It is designed as a direct replacement for charging systems that originally carried these references, making it a straightforward fitment choice for workshops sourcing a reliable OE-equivalent unit.
The 11SI Series internal regulator / internal fan (IR/IF) design is a well-established Delco platform widely used in industrial and agricultural machinery. This unit operates at 12 volts with a 70-amp output and turns clockwise — confirming the correct rotation before fitting is always advisable. The alternator is supplied without a pulley, so the original pulley from the unit being replaced must be transferred at the point of installation.
Fitment data covers Case machinery, with confirmed applications including the Case 410 and Case 420 (2005–2012). Use the selection widget or search by OEM number to verify your exact machine variant before ordering.
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| Type | Alternator |
|---|---|
| Manufacturer | Delco |
| Design | 11SI Series IR/IF |
| Voltage | 12V |
| Output | 70A |
| Rotation | CW |
| Pulley | w/o 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 | 8600310 | 7127-12R | A1029 | A1029PR | A1039 | 7127-SEN | 7127-SEN-100A1G | 7127-SEN-2G | 7256N | 7850N | 7853N-140A | 8030N | 8073N | 8718N | 12168N-DR |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 24 | 12 | 12 | 12 | |
| Output Current | 63 | 100 | 100 | 140 | 63 | 100 | 63 | 90 | 100 | 140 | 70 | 130 | 160 | 160 | |
| Design | IR/EF | 10SI Series IR/EF | 10SI Series IR/EF | IR/EF | 30SI/TR Series IR/IF | 27SI/200 Series IR/EF | 15SI IR/EF | 21SI Series IR/EF | 22SI Series IR/EF | 24SI Series HP IR/IF | CS130D IR/IF | ||||
| Manufacturer | Delco | Delco | Delco | Delco | Delco | Delco | Delco | Delco | Delco | Delco | Delco | ||||
| Pulley | V1 | AFP | AFP | AFP | Groove Pulley | Groove Pulley | Groove Pulley | Without Pulley | Without Pulley | Groove Pulley | Without Pulley | Without Pulley | Without Pulley | Groove Pulley | |
| Rotation | CW | CW | CW | CW | CW | Bi-directional | CW | CW | CW | CW | CW | ||||
A. The WAI 8720N replaces original-equipment alternators referenced under Delco 19020203, Cummins 3972729, and Remy 19020207 (4 OE cross-references in total). Confirmed fitment covers Case machinery, including the Case 410 and Case 420 (2005–2012). Use the selection widget or search our cross-referenced catalogue by OEM number or machine model to verify your exact variant. Every fitment shown is backed by our Fit Guarantee.
A. Yes — Cummins 3972729 is one of the four OE cross-references confirmed for the WAI 8720N. The part also cross-references Delco 19020203 and Remy 19020207. If you are sourcing by OEM number, search our catalogue by that reference to confirm the match against your machine's specification.
A. The WAI 8720N is a 12-volt, 70-amp alternator with clockwise rotation, built to the Delco 11SI Series IR/IF design (internal regulator, internal fan). It is supplied brand new and without a pulley — the original pulley from the unit being replaced must be refitted during installation.
A. No — the 8720N is supplied without a pulley. You will need to transfer the pulley from the unit being replaced, or source a compatible pulley separately. Check the pulley bore and profile against your original unit before fitting.
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. Use the selection widget to match your make, model and engine, or search our cross-referenced catalogue by OEM number, machine model or equivalent part across brands. If your vehicle is not listed, ask Simon. Every fitment shown is backed by our Fit Guarantee.
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