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Details
| Specification | Value |
|---|---|
| Brand | WAI |
| MPN | 21491n |
| Category | Power generator |
| Voltage [V] | 12 V |
| Alternator Charging Current [A] | 90 A |
| Manufacturer Restriction | Valeo |
| Length [cm] | 20.9 cm |
| Width [cm] | 18.49 cm |
| Height [cm] | 18.01 cm |
| Weight [kg] | 6.08 kg |
OE/OEM numbers (13)
Search by this OE number to find compatible parts
- VAG—037903025L
- VAG—037903025M
- VAG—037903025MX
- VAG—037903025S
- VAG—037903025T
- VAG—038903018R
- VAG—038903018RX
- VAG—03D903025E
- VAG—047903015G
- VAG—047903015H
- VAG—047903018A
- VAG—047903018AX
- VAG—047903018X
Where this part fits
Original-fit position for OE 047903018AX. The red ring marks where this part installs on the vehicle.
About this product
The WAI Power generator (21491N) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Voltage [V]: Zinc V, Alternator Charging Current [A]: 90 A, Manufacturer Restriction: Valeo, Length [cm]: 20, Stainless Steel cm, Width [cm]: Composite, 49 cm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit SEAT, SKODA, VW models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 0124315005, 0124325013, 0 124 325 150, 037903025L and 144 more. Matching these numbers confirms a like-for-like replacement with no loss of function. WAI is a recognised supplier of automotive replacement components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
Suitable cars
Equivalent products (137)
Show all 137 OE numbers
Power generator WAI 21491N — compatible car models
| Car models | SEAT: ALHAMBRA (7V8, 7V9), AROSA (6H1), CORDOBA (6K1, 6K2), CORDOBA (6L2), CORDOBA Vario (6K5), IBIZA II (6K1), IBIZA III (6L1), IBIZA IV (6J5, 6P1), IBIZA IV Hatchback Van (6J1), IBIZA IV SC (6J1, 6P5) (+4 more); SKODA: FABIA I (6Y2), FABIA I Combi (6Y5), FABIA II (542), FABIA II Combi (545), FABIA I Praktik (6Y5), FABIA I Saloon (6Y3), OCTAVIA I (1U2), RAPID (NH3, NK3, NK6), RAPID Spaceback (NH1), ROOMSTER (5J7) (+1 more); VW: BORA I (1J2), BORA Variant (1J6), CADDY II Box Body/MPV (9K9A), CADDY II MPV (9K9B), FOX Hatchback (5Z1, 5Z3, 5Z4) |
|---|---|
| Engines | 2.0 i; 1.0; 1.2 12V; 1.4; 1.0 16V; 1.2; 1.4 16V; 1.6 16 V |
| Year of manufacture | 1993-2022 |
| Manufacturer article number (MPN) | 21491N |
| OE part numbers | 037903025L, 037903025M, 037903025MX, 037903025S, 037903025T, 038903018R, 038903018RX, 03D903025E, 047903015G, 047903015H, 047903018A, 047903018AX, 047903018X |
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
WAI 21491n Power generator. Alternator Charging Current [A]: 90 A. Height [cm]: 18,01 cm. Length [cm]: 20,9 cm. Manufacturer Restriction: Valeo. Number of ribs: 6. Pulleys: 2. Voltage [V]: 12 V. Weight [kg]: 6,08 kg
- 1x Power generator
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 5–9 business days
- Order before 5pm — ships the next working day
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Power generator compatible with my car?
This Power generator fits SEAT, SKODA, VW vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this WAI Power generator have?
This WAI Power generator has the following specifications: Voltage [V]: 12 V; Alternator Charging Current [A]: 90 A; Manufacturer Restriction: Valeo; Length [cm]: 20,9 cm; Width [cm]: 18,49 cm; Height [cm]: 18,01 cm. Check the full specifications table above for complete details.
What OE part numbers does this Power generator replace?
This Power generator replaces OE part numbers: 037903025L, 037903025M, 037903025MX, 037903025S, 037903025T, 038903018R, 038903018RX, 03D903025E and 5 more. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Power generator cost?
This WAI Power generator is available for £138.99. Power generator prices vary depending on brand, specifications, and vehicle compatibility. WAI parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Power generator?
Watch for dimming headlights, warning light on dashboard, dead battery, strange noises from the engine, or electrical accessories malfunctioning.
What tools do I need to replace a Power generator?
Tools needed: socket set (8-17mm), spanner set, serpentine belt tool or breaker bar, multi-meter (for testing charge output), battery terminal clamp remover. Difficulty: Moderate DIY. Safety warning: Disconnect the battery negative terminal before starting. Never disconnect the alternator with the engine running -- voltage spikes will destroy ECU electronics.
Can I use this part as a replacement for OE 037903025L?
Yes, this WAI Power generator is a direct replacement for OE part number 037903025L. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
