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Details
| Specification | Value |
|---|---|
| Brand | ASTEMO-HITACHI |
OE numbers (6)
Search by this OE number to find compatible parts
- AUDI / SKODA / VW—03L128063A
- AUDI / SKODA / VW—03L128063AF
- AUDI / SKODA / VW—03L128063B
- AUDI / SKODA / VW—03L128063C
- AUDI / SKODA / VW—03L128063D
- AUDI / SKODA / VW—03L128063E
Where this part fits
Original-fit position for OE 03L128063B. The red ring marks where this part installs on the vehicle.
About this product
When throttle body performance matters, the ASTEMO-HITACHI 2508509 delivers — built to the same dimensional and material standards as the original part it replaces. Compatible with AUDI, SEAT, SKODA, VW vehicles; use the vehicle selector above to confirm exact fitment for your make, model, and engine variant. Fitment data is sourced from TecDoc, the authoritative European parts catalogue. This part supersedes original equipment references: 03L128063A, 03L128063AF, 03L128063B, 03L128063C and 85 more. Matching these numbers confirms a like-for-like replacement with no loss of function. ASTEMO-HITACHI 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.
Throttle Body buying guide
Why replace this part?
The throttle body controls the volume of air entering the engine in response to accelerator pedal position. Carbon buildup on the throttle plate causes rough idle, stalling, and poor throttle response. Electronic throttle bodies can also fail mechanically or electrically.
Signs you need a replacement
- Rough or unstable idle
- stalling at low speed
- poor throttle response
- check engine light with throttle position codes
- hunting idle after a cold start
When to replace
Clean every 50,000 miles with throttle body cleaner. Replace if the bore is worn or if the electronic actuator fails.
Suitable cars
Equivalent products (87)
Show all 87 OE numbers
Throttle Body ASTEMO-HITACHI 2508509 — compatible car models
| Car models | AUDI: A3 (8P1), A3 Convertible (8P7), A3 Sportback (8PA), A4 Allroad B8 (8KH), A4 B8 (8K2), A4 B8 Avant (8K5), A5 (8T3), A5 Convertible (8F7), A5 Sportback (8TA), A6 C6 (4F2) (+4 more); SEAT: ALTEA (5P1), ALTEA XL (5P5, 5P8), EXEO (3R2), EXEO ST (3R5), LEON (1P1), TOLEDO III (5P2); SKODA: OCTAVIA II (1Z3), OCTAVIA II Combi (1Z5), SUPERB II (3T4), SUPERB II Estate (3T5), YETI (5L); VW: EOS (1F7, 1F8), GOLF PLUS V (5M1, 521), GOLF VAN VI Variant (AJ5), GOLF VI (5K1), GOLF VI Variant (AJ5) |
|---|---|
| Engines | 2.0 TDI; 2.0 TDI quattro; 2.0 TDI RS; 2.0 TDI 4x4; 2.0 TDI 16V; 2.0 TDi |
| Year of manufacture | 2003-2019 |
| Manufacturer article number (MPN) | 2508509 |
| OE part numbers | 03L128063A, 03L128063AF, 03L128063B, 03L128063C, 03L128063D, 03L128063E |
Compatibility check
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Please wait while we load vehicle compatibility information.Description and what's included
ASTEMO-HITACHI 2508509
- 1x Throttle Body
Shipping, returns, warranty
Free UK delivery on orders over £99.00. 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 Throttle Body compatible with my car?
This Throttle Body fits AUDI, 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 ASTEMO-HITACHI Throttle Body have?
The package includes the Throttle Body as described in the specifications above. Check the "What's included" section for a full list of components. If mounting hardware or accessories are required, they will be listed separately.
What OE part numbers does this Throttle Body replace?
This Throttle Body replaces OE part numbers: 03L128063A, 03L128063AF, 03L128063B, 03L128063C, 03L128063D, 03L128063E. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Throttle Body cost?
This ASTEMO-HITACHI Throttle Body is available for £116.99. Throttle Body prices vary depending on brand, specifications, and vehicle compatibility. ASTEMO-HITACHI parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Throttle Body?
Watch for rough or erratic idle, hesitation or stumbling during acceleration, poor fuel economy, black smoke from the exhaust, or a check engine light related to throttle position or idle control.
What tools do I need to replace a Throttle Body?
Tools needed: T20/T25 Torx or 8mm socket, electrical contact cleaner, new throttle body gasket, torque wrench. Difficulty: Moderate DIY. Safety warning: After fitting a new throttle body, a throttle position relearn procedure using a diagnostic tool is usually required -- without this, the engine may idle poorly or not at all.
Can I use this part as a replacement for OE 03L128063A?
Yes, this ASTEMO-HITACHI Throttle Body is a direct replacement for OE part number 03L128063A. 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.
