- 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 | TOPRAN |
| Operating Mode | EL |
| Number of pins | 5 -pin connector |
| Rated Voltage [V] | 12 V |
| Inlet Ø [mm] | 48 mm |
OE numbers (5)
Search by this OE number to find compatible parts
- AUDI / SEAT / SKODA / VW—03G 128 063F
- AUDI / SEAT / SKODA / VW—03L 128 063AD
- AUDI / SEAT / SKODA / VW—03L 128 063J
- AUDI / SEAT / SKODA / VW—03L 128 063L
- AUDI / SEAT / SKODA / VW—03L 128 063Q
Where this part fits
Original-fit position for OE 03G128063F.
About this product
Sourced from TOPRAN, this throttle body (639 301) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Operating Mode: Electric, Supplementary Article/Supplementary Info: 35, Number of pins: Rubber -pin connector, Rated Voltage [V]: Zinc V, Supplementary Article/Info 2: 774 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit AUDI, 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: 001-10-21239, 03G 128 063F, 03L 128 063AD, 03L 128 063J and 124 more. Matching these numbers confirms a like-for-like replacement with no loss of function. TOPRAN 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.
About TOPRAN
TOPRAN, part of the Hans Thomsen Group headquartered in Hamburg, Germany, is a growing independent aftermarket brand focused on providing quality parts at accessible prices. TOPRAN offers a comprehensive range covering engine, cooling, electrical, braking, and body components for European vehicles. All TOPRAN products are manufactured to meet OE specifications and undergo quality testing before distribution. Combining German quality management with competitive pricing, TOPRAN is an excellent choice for cost-conscious motorists and workshops who do not want to compromise on part quality.
Suitable cars
Equivalent products (138)
Show all 138 OE numbers
Throttle Body TOPRAN 639 301 — compatible car models
| Car models | AUDI: A1 (8X1, 8XK), A1 Sportback (8XA, 8XF), A3 (8P1), A3 Convertible (8P7), A3 Sportback (8PA); SEAT: ALTEA (5P1), ALTEA XL (5P5, 5P8), IBIZA IV (6J5, 6P1), IBIZA IV ST (6J8, 6P8), LEON (1P1), TOLEDO IV (KG3); SKODA: OCTAVIA II (1Z3), OCTAVIA II Combi (1Z5), RAPID (NA2), RAPID (NH3, NK3, NK6), RAPID Spaceback (NH1), ROOMSTER (5J7), ROOMSTER Praktik (5J), SUPERB II (3T4), SUPERB II Estate (3T5), YETI (5L); VW: BEETLE (5C1, 5C2), BEETLE Convertible (5C7, 5C8), CADDY III Box Body/MPV (2KA, 2KH, 2CA, 2CH), CADDY III MPV (2KB, 2KJ, 2CB, 2CJ), CADDY IV Box Body/MPV (SAA, SAH), CADDY IV MPV (SAB, SAJ), GOLF PLUS V (5M1, 521), GOLF VI (5K1), GOLF VI Variant (AJ5) |
|---|---|
| Engines | 1.6 TDI |
| Year of manufacture | 2003-2022 |
| Manufacturer article number (MPN) | 639 301 |
| OE part numbers | 03G 128 063F, 03L 128 063AD, 03L 128 063J, 03L 128 063L, 03L 128 063Q |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TOPRAN 639301 . Connector Shape: 5. Housing material: 1. Inlet Ø [mm]: 48 mm. Number of pins: 5 -pin connector. Operating Mode: EL. Rated Voltage [V]: 12 V. Supplementary Article/Info 2: 774. Supplementary Article/Supplementary Info: 35
- 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 TOPRAN Throttle Body have?
This TOPRAN Throttle Body has the following specifications: Operating Mode: EL; Supplementary Article/Supplementary Info: 35; Number of pins: 5 -pin connector; Rated Voltage [V]: 12 V; Supplementary Article/Info 2: 774; Connector Shape: 5. Check the full specifications table above for complete details.
What OE part numbers does this Throttle Body replace?
This Throttle Body replaces OE part numbers: 03G 128 063F, 03L 128 063AD, 03L 128 063J, 03L 128 063L, 03L 128 063Q. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Throttle Body cost?
This TOPRAN Throttle Body is available for £115.99. Throttle Body prices vary depending on brand, specifications, and vehicle compatibility. TOPRAN 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 03G 128 063F?
Yes, this TOPRAN Throttle Body is a direct replacement for OE part number 03G 128 063F. 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.
