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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £19.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £19.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £19.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £19.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £19.95 | 7 to 10 working days |
Product Number: 66031004
The Highway Automotive 66031004 is a 24-volt, 120-amp alternator designed as a direct replacement unit for heavy-duty bus and coach applications. Supplied without belt pulley, it is intended for fitment where the original pulley is reused or sourced separately, making it well suited to workshop overhaul and fleet maintenance programmes. Rated at 24 V and 120 A, this alternator delivers the sustained charging output demanded by large commercial vehicles operating auxiliary electrical loads typical of passenger transport fleets. The unit is engineered to restore correct charging system function and maintain battery health under the duty cycles found in urban bus operation. The 66031004 covers 36 applications across the MAN range, including MAN Lion's City variants — among them the A21, A35, A37, A66, and DD (ND313) A39 — as well as MAN HOCL models including the 14.240 A66, 14.280 A66, 14.280 A67, 18.220 A69, 18.240 A69, and 18.280 A69, plus the MAN Lion's Regio and MAN NL 202. Engine-specific variants such as Lion's City A35 and A66 with engine D0836 are included within the confirmed application list. The box contains the alternator unit only; no belt pulley is included. Buyers should confirm pulley compatibility with the existing installation before ordering. Cross-reference and OE part number data are not published for this SKU — fitment should be verified using the selection widget or by consulting the team directly.
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Notes: Voltage: 24 V; Charging current: 120 A; Without belt pulley
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| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
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Standard Delivery: £19.95
Delivery Estimate: 7 to 10 working days
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| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 14482N | 20539N | 21610N | 23853N | 21173N | 22155N | 23791N | 8440N | A4033 | A4058 | A4072 | A4084 | A4085 | A4103 | A9012 |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Output Current | 120 | 124 | 90 | 90 | 110 | 90 | 100 | 105 | 70 | 80 | 70 | 85 | 110 | ||
| Design | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | |||||||||
| Manufacturer | Marelli | Marelli | Electroprecizia | VISTEON | Marelli | Ford | Mando | Ford | |||||||
| Pulley | COUPLER | S6 | S6 | SC7 | S6 | AP | AP | AP | AP | AP | AP | ||||
| Rotation | CW | CW | CW | CW | |||||||||||
A. This alternator fits MAN models across 36 confirmed applications, including the MAN Lion's City A21, A35, A66, and DD (ND313) A39, along with MAN HOCL 14.240 A66, 18.240 A69, and 18.280 A69, the MAN Lion's Regio, and MAN NL 202, among others. 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 — the fitment list includes engine-specific entries, for example the MAN Lion's City A35 and MAN Lion's City A66 with engine D0836. If your Lion's City variant carries a different engine designation, use the selection widget or ask Simon to confirm whether your specific application is covered within the 36 total entries.
A. Warranty details are shown in the product tech specs or datasheet where available. Contact us if warranty is not stated on the listing.
A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.
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