No product images available
Specs, fitment data and pricing remain accurate.- Shop with confidence: competitive prices, exclusive deals, and delivery perks.
- Need it quickly? We dispatch fast-moving parts daily. Check delivery options.
- Swap or return items within the standard return period with a simple process.
- Questions about fitment or orders? Our support team is ready to help.
Similar products
Customers also bought
Details
| Specification | Value |
|---|---|
| Brand | Airstal |
| MPN | 20-1900 |
| Category | Power generator |
| Voltage [V] | 14 V |
| Alternator Charging Current [A] | 70 A |
| Belt Pulley Ø [mm] | 61 mm |
| Clamp | B+ M8 |
OE numbers (2)
Search by this OE number to find compatible parts
- VW—021903025E
- VAG—9517168
About this product
When power generator performance matters, the Airstal 20-1900 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Voltage [V]: Nylon V, Alternator Charging Current [A]: 70 A, Number of ribs: Ceramic, Belt Pulley Ø [mm]: 61 mm, Clamp: B+ M8. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. This part supersedes original equipment references: 0123310018, 021903025E, 0986040840, 111877 and 24 more. Matching these numbers confirms a like-for-like replacement with no loss of function. Airstal 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
Fitment not confirmed for this part
We could not confirm which vehicles this part fits — check before buying.Equivalent products (26)
Show all 26 OE numbers
Power generator Airstal 20-1900 — compatible car models
| Manufacturer article number (MPN) | 20-1900 |
|---|---|
| OE part numbers | 021903025E, 9517168 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
Airstal 20-1900 Power generator. Alternator Charging Current [A]: 70 A. Belt Pulley Ø [mm]: 61 mm. Clamp: B+ M8. Number of ribs: 7. Pulleys: 2. Vehicle Main Current: 1. Voltage [V]: 14 V
- 1x Power generator
Shipping, returns, warranty
Free UK delivery on orders over £50.00. Tracked standard shipping.
- Standard delivery: 4–8 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?
Use the vehicle selector at the top of the page to check compatibility. Enter your car's make, model, and engine — we'll confirm whether this Power generator fits. All fitment data is verified through TecDoc.
What specifications does this Airstal Power generator have?
This Airstal Power generator has the following specifications: Voltage [V]: 14 V; Alternator Charging Current [A]: 70 A; Number of ribs: 7; Belt Pulley Ø [mm]: 61 mm; Clamp: B+ M8; Pulleys: 2. 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: 021903025E, 9517168. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Power generator cost?
Power generator prices vary depending on brand, specifications, and vehicle compatibility. Check the current price above for this Airstal Power generator. All parts come with 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 021903025E?
Yes, this Airstal Power generator is a direct replacement for OE part number 021903025E. 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.
