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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: 13143N
The WAI 13143N is a brand-new 12V 80A alternator. It is built to Denso IR/EF specification, replacing original-equipment numbers from Denso, Bosch and Delco Remy across 25 John Deere applications. It is a direct-fit replacement for machines including the John Deere 4040, 4050, 4240, 4250, 4350, 4440, 444D and 4450, making it a practical choice for agricultural and plant operators running these models.
Constructed to Denso internal-regulator, externally-excited (IR/EF) design, the 13143N delivers 80A output at 12V with clockwise rotation. The unit is supplied without a pulley, so the original pulley from the machine being serviced is retained during installation. Being brand new rather than remanufactured means there are no worn internals or unknown service history to account for.
With 53 OE cross-references on file — including Denso 021000-7410, Denso 021000-7420, Denso 021000-8740, Bosch USA AL922X and Delco Remy DRA3127 — buyers can confirm a match against the original part number before ordering.
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| Type | Alternator |
|---|---|
| Manufacturer | Denso |
| Design | IR/EF |
| Voltage | 12V |
| Output | 80A |
| Rotation | CW |
| Pulley | w/o 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. The 13143N fits John Deere machines across 25 applications, including the 4040 (1981–1982), 4050 (1983–1988), 4240 (1981–1982), 4250 (1983–1988), 4350 (all years), 4440 (1981–1982), 444D (1987–1988) and 4450 (1983–1990). Use the selection widget to match your exact model and engine variant, or search our cross-referenced catalogue by machine model. Every fitment is backed by our Fit Guarantee.
A. Yes. The WAI 13143N carries 53 OE cross-references in total. Confirmed Denso numbers it replaces include 021000-7410, 021000-7420, 021000-8740, 021000-8741, 021000-8750, 021000-8751 and further Denso references. Search our cross-referenced catalogue by your original Denso number to verify the match before ordering.
A. Yes, where the fitment applies. The WAI 13143N replaces Bosch USA reference AL922X and Delco Remy reference DRA3127, among the 53 OE cross-references listed for this part. If you have one of those original numbers, use it to confirm the match via the selection widget or ask Simon.
A. No — the 13143N is supplied without a pulley. You retain and refit the original pulley from the alternator being replaced. Check that the existing pulley is in serviceable condition before installation.
A. The WAI 13143N is a 12V, 80A alternator built to Denso IR/EF (internal regulator, external field) design, with clockwise rotation. It is supplied brand new — not remanufactured. Full specifications are shown in the table above.
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.
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.
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