Wastegate Repair Kit – Audi / Seat / VW 1.4 TSI | OEM 04E145721B | RHF3 10656-38

A worn wastegate on the IHI RHF3 turbocharger (04E145721B) in Audi A1, Seat, and VW 1.4 TSI 150HP models causes boost control faults and limp mode. Audi A1 1.4 TFSI 8X1/8XF (110kW/150HP), Seat, VW 1.4 TSI 150HP

Fits OEM #04E145721B.

When to Inspect This Part

• loss of boost or engine power
• underboost or overboost fault
• limp mode
• abnormal noise from the turbo actuator or linkage

What's Included

• Repair components supplied for this SKU and shown in the product photos; no complete surrounding assembly is included

OEM Part Numbers and Vehicle Fitment

Additional confirmed fitment

• Audi A1 1.4 TFSI 8X1 8XF 110Kw 150CV 2014
• Audi A3 1.4 TFSI 8V1 8V7 8VS 8VA 110Kw 150CV 2014
• Audi Q3 8U 1.4 TFSI 110Kw 150CV 2013
• Seat lbiza V 6J1 1.4 TSI 110Kw 150CV 2009
• Seat lbiza V ST 6J8 1.4 TSI 110Kw 150CV 2012
• Seat Leon 5F1 5F5 5F8 1.4 TSI 110Kw 150CV 2014
• VW Golf Sportsvan 1.4 TSI 110Kw 150CV 2014
• VW Golf VII 5G1 1.4 TSI 103Kw 140CV 2012
• VW Golf VII Kombi BA5 1.4 TSI 110Kw 150CV 2014
• VW Jetta IV 162 163 1.4 TSI 110Kw 150CV 2014
• VW Polo 6R 1.4 TSI 103Kw 140CV 2012

Part Number / PN

04E145721B, 04E145704C, 04E145704CV, 04E145704CX, 04E145703TV, 04E145704P, 04E145703T, 04E145704PV, 04E145703TX, 04E145704PX, 04E145721BV, 04E145721BX, 10656-38

Important Fitment Check

Before ordering, compare the part design, dimensions, connectors, and every available OEM/P/N marking with the part installed on the vehicle. Matching OEM/P/N 04E145721B is the primary fitment check.

FAQ

How do I confirm fitment for this Wastegate Repair Kit?

Compare the exact OEM/P/N and physical design with the installed part. The primary reference is 04E145721B. Do not select the part by vehicle model alone.

What symptoms may indicate a problem with this Wastegate Repair Kit?

Confirmed symptoms include loss of boost or engine power, underboost or overboost fault, limp mode, abnormal noise from the turbo actuator or linkage. Diagnose the original assembly before ordering so another fault is not mistaken for this part.

What is included with this Wastegate Repair Kit?

The confirmed kit contents are: Repair components supplied for this SKU and shown in the product photos; no complete surrounding assembly is included.

Does this listing include the complete surrounding assembly?

No. It includes only the item or repair components identified for this SKU. Inspect related parts separately and replace them only when diagnosis confirms a fault.

What should be checked before installation?

Check the OEM/P/N, dimensions, connectors, orientation, and condition of the mating components. Installation should follow the correct service procedure for the specific vehicle and assembly.

• Audi
• Volkswagen
• SKODA
• Seat

Orders ship within 1–2 business days.

Standard delivery:

• USA: Some items ship from our US warehouse and arrive within 3 business days.
• USA-EU: 10–21 business days
• Worldwide: 14–30 business days

Shipping cost is shown at checkout.

Can I exchange or return an item?

Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights

To use this feature, please make sure that:

• the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
• the goods are fully completed and the integrity of the packaging is not violated
• retained all labels and factory markings