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Technical Specification
PRODUCT NUMBER 13199N12150N12145N12192N12140N12366N13194N
Voltage 12121212121212
Output Current 55959590555533
Design Letrika (Iskra) IR/EFIR/EFIR/EFIR/IFIR/EFIR/EFIR/EF
Manufacturer BoschBoschDensoMagnetonMagnetonBosch
Pulley Groove PulleyWithout PulleyWithout PulleyGroove PulleyGroove PulleyGroove PulleyGroove Pulley
Rotation CWCWCWCWCW

Q 1. Which John Deere machines does the WAI 12151N fit?

A. The 12151N fits 59 John Deere applications, including the 1068 (1981–1994), 1075 (1982–1994), 1550 (all years), 1750, 1750V, 1850, 1850F, and 1850V. To confirm your exact model and engine variant, use the selection widget on this page or search our cross-referenced catalogue by machine model — every fitment shown is backed by our Fit Guarantee.

Q 2. Does this replace Bosch 0 120 484 020 / 0120484020?

A. Yes. The WAI 12151N directly replaces Bosch 0 120 484 020 (also listed as 0120484020), along with Bosch 0 120 484 002, 0 120 484 003, 0 120 484 016, 0120488217, 0120488218, 0120488267, and others — 69 Bosch, Delco Remy, and Iskra / Letrika references in total. If the number stamped on your existing unit is in that list, this is the correct replacement.

Q 3. Does the 12151N replace any Delco Remy or Iskra alternator numbers?

A. Yes. Cross-references include Delco Remy DRA3128, DRA6800, DRA6800N, and DRA7450, and Iskra / Letrika references 11201989, IA0989, AAK5197, 11204391, AAK4829, and IA1518, among others. Search our catalogue by any of these numbers to verify fit against your original unit.

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

A. The 12151N is a 12V, 95-amp alternator with clockwise rotation and an IR/EF (internally regulated, externally fan-cooled) design to Bosch specification. It is supplied brand new — not remanufactured or on an exchange basis — so there is no core charge and no worn unit to return.

Q 5. Is this a new alternator or a remanufactured exchange unit?

A. It is brand new. Unlike exchange or remanufactured units, the WAI 12151N carries no core charge and does not require you to return a worn original. The condition is confirmed as Brand New in the product specification.

Q 6. How do I confirm this part fits my vehicle or machine?

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.

Q 7. Is this part covered by your 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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