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Technical Specification
PRODUCT NUMBER 14482N20539N21610N23853N21173N22155N23791N8440NA4033A4058A4072A4084A4085A4103A9012
Voltage 121212121212121212121212121212
Output Current 12012490901109010010570807085110
Design IR/IFIR/IFIR/IFIR/IFIR/IFIR/IF
Manufacturer MarelliMarelliElectropreciziaVISTEONMarelliFordMandoFord
Pulley COUPLERS6S6SC7S6APAPAPAPAPAP
Rotation CWCWCWCW

Q 1. What does the WAI 8391N replace, and what machines does it fit?

A. The WAI 8391N replaces Motorola-pattern alternators across a range of plant, agricultural, and industrial machinery. It cross-references 18 OE part numbers including Perkins OD20382, Prestolite 110-296 and 110-446, Prestolite Electric 110296 and 110444, Onan 191-1926-02 and 191192602, Motorola 10296, 10446, 8LHA3025, 8LHA3025P, 8LHA3025PA and 8LHA3071P, Aegis LEE110-446, Hella 8EL730135001, and SABREENG L2E31. Vehicle and machine-model fitment data is not published for this part; to confirm suitability for your specific application, search our cross-referenced catalogue by OE number or machine model, or ask Simon.

Q 2. Does this alternator replace the Perkins OD20382?

A. Yes. Perkins OD20382 is one of the 18 OE cross-references listed for the WAI 8391N. If your machine carries a Perkins-specified Motorola-pattern alternator with that number, the 8391N is the catalogued replacement. Search our catalogue by that reference or ask Simon to confirm fit for your engine variant.

Q 3. Will this fit in place of the Prestolite 110-296 or 110-446?

A. Yes — both Prestolite 110-296 and Prestolite 110-446 (and their equivalent Prestolite Electric references 110296 and 110444) are among the 18 cross-references for this alternator. Use those numbers to search our catalogue or ask Simon if you need further confirmation.

Q 4. What are the key electrical specifications of this alternator?

A. The WAI 8391N operates at 24V and delivers 75A output. It uses the Motorola IR/EF (internal regulator, external fan) design and is supplied brand new — not remanufactured.

Q 5. Is this a remanufactured unit or brand new?

A. It is brand new. The WAI 8391N is not a remanufactured or reconditioned unit — it is supplied new, to the original Motorola IR/EF specification.

Q 6. Does this alternator replace any Onan part numbers?

A. Yes. The WAI 8391N cross-references Onan 191-1926-02 and Onan 191192602. If your generator or engine carries either of those Onan references, this is the listed replacement. Ask Simon or search by those numbers to confirm suitability for your specific unit.

Q 7. Can I ask questions about this alternator before ordering?

A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.

Q 8. Where can I find related spares and accessories for this product?

A. Compatible spares and accessories are shown on the Related Accessories tab of this product page, and common parts across the brands we stock are in our Parts & Spares section.

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