Audi VW 1.8T Turbocharger
OEM-spec remanufactured K03 turbo for AUM, AUQ, ARY, AWP and BJX engines.

VAG 1.8T K03 Turbo 53039700052
Fits Audi A3 TT, VW Golf Bora, Seat Leon and Skoda Octavia 1.8T applications.

VW Golf Audi TT Turbo 06A145713D
Direct replacement turbo covering 06A145704S and 06A145713F OE references.

Seat Leon Skoda Octavia Turbo
Replacement turbo covering 53039700052, 53039880052, 53039700094 and 06A145713L.

Remanufactured Turbo / Turbocharger 53039700052 - Audi A3 TT Golf Octavia Leon 1.8T | 150-190HP

Last items in stock

£339.00

VAT included Delivered within 2-3 days

Remanufactured turbocharger for selected VAG 1.8T petrol applications fitted to Audi, Volkswagen, Seat and Skoda models. Fits Audi A3 8L and TT 8N, VW Golf IV, Bora, New Beetle and Polo GTI Cup Edition, Seat Ibiza Cupra, Leon and Toledo, plus Skoda Octavia I and Octavia RS. Suitable for 150HP, 163HP, 180HP and 190HP 1.8T applications depending on model and engine code.

OEM-spec remanufactured BorgWarner / KKK turbocharger built for correct fitment, boost response and long-term reliability. Covers part numbers 53039700052, 53039700094, 53039880052 and 53039880094, with OE references including 06A145713D, 06A145704S, 06A145713B, 06A145713F, 06A145713L, 06A145713M, 06A145713N, 06A145704T and 06A145702P.

Please check the part number and OE reference on your existing turbocharger before ordering. If unsure, call us on 07440 707 255 or 01323 301 999.

Images are for illustration purposes only.

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Remanufactured Turbo / Turbocharger 53039700052 - Audi A3 TT Golf Octavia Leon 1.8T | 150-190HP

Supplied with gaskets included, without the original manufacturer’s box

Please check your part number before ordering. If you are unsure, call us on 07440 707 255 or 01323 301 999 and we will be happy to confirm compatibility.

This remanufactured turbo fits selected VAG 1.8T petrol applications, including Audi A3 and TT, VW Golf, Bora, New Beetle and Polo, Seat Ibiza, Leon and Toledo, and Skoda Octavia models. Commonly matched to BorgWarner / KKK part numbers 53039700052, 53039700094, 53039880052 and 53039880094. OE references include 06A145713D, 06A145704S, 06A145713B, 06A145713F, 06A145713L, 06A145713M, 06A145713N, 06A145704T and 06A145702P.

Suitable for selected 150HP, 163HP, 180HP and 190HP 1.8T applications using engine codes including AUM, AUQ, ARY, APP, BVP, BKV, BJX, BBU, BLZ, JAE, AWP, AWU, AWV, BKF and BNU. Public turbo catalogues also list the 53039700052 / 53039700094 turbo family for Audi A3, Audi TT, Seat Ibiza, Seat Leon, Seat Toledo, Skoda Octavia and VW Golf/Bora 1.8T applications. Built to OEM specification, this remanufactured K03 turbocharger restores correct boost pressure and performance across compatible VAG 1.8T petrol engines. For fitting, diagnostics or related support, see our turbocharger services.

Product Highlights

Remanufactured OEM-spec K03 turbocharger
Main part number: 53039700052
Supplied with gaskets included
Fits selected Audi, VW, Seat and Skoda 1.8T models
Suitable for 150HP to 190HP petrol applications
Engine size: 1.8T / 1781cc Petrol
Engine codes include: AUM, AUQ, ARY, APP, BVP, BKV, BJX, BBU, BLZ, JAE, AWP, AWU, AWV, BKF and BNU
OE references include: 06A145713D, 06A145704S and 06A145713F
Direct replacement - no modification required
Sold on an exchange basis
Fitting instructions

Exchange Basis - How It Works

This turbocharger is supplied on an exchange basis, which means we require your old unit to be returned. You can arrange this in whichever way is most convenient:

Pay the surcharge - your replacement turbo is dispatched immediately. The surcharge is refunded in full once we receive your old unit. Please return your old turbocharger within 21 days.
Send your old turbo first - once received, we will dispatch your replacement the same day with no surcharge required.
Visit our workshop - bring your old unit to our Eastbourne workshop and we will exchange it on-site.

Vehicle Compatibility

This turbocharger fits the following makes, models, and engine specifications:

Make	Model	HP	kW	Engine	Engine Code	Year
Audi	A3 8L / TT 8N 1.8T	150 / 163 / 180 / 190	110 / 120 / 132 / 140	1.8 Petrol	AJQ / APP / ARX / ARY / ATC / AUM / AUQ / AWP / BVP / BVR	1996-2006
Seat	Ibiza III Cupra / Leon / Toledo II 1.8T	150 / 180	110 / 132	1.8 Petrol	AJQ / APP / ARY / AUQ / BBU / BJX / BKV / BLZ	1999-2008
Skoda	Octavia I / Octavia I Combi / RS 1.8T	150 / 180	110 / 132	1.8 Petrol	ARX / AUM / AUQ	1997-2010
Volkswagen	Golf IV / Bora / New Beetle / Polo GTI Cup Edition 1.8T	150 / 180	110 / 132	1.8 Petrol	AUM / AUQ / AWP / AWU / AWV / BEK / BKF / BNU	1997-2014

Associated part numbers: 53039700052, 53039700094, 53039880052, 53039880094, 06A145713D, 06A145704S, 06A145704SX, 06A145704SV, 06A145713B, 06A145713BX, 06A145713BV, 06A145713F, 06A145713FV, 06A145713FX, 06A145713DV, 06A145713L, 06A145713LV, 06A145713LX, 06A145713M, 06A145713MX, 06A145713MV, 06A145713DX, 06A145713N, 06A145713NV, 06A145713NX, 06A145704T, 06A145704TV, 06A145704TX, 06A145702P, 06A145702PX, 06A145702PV

Fitting Advice

We always recommend having your replacement turbocharger fitted by a qualified mechanic. Correct installation is essential to ensure proper fitment, reliable operation, and long service life from day one.

You can read our full fitting instructions here.

It is also essential that the root cause of the original turbocharger failure is identified before fitting the replacement. In many cases there is an underlying issue that also needs attention, such as a blocked DPF. This is one of the most common contributing factors, and fitting a new turbo without resolving it can place the replacement under unnecessary strain.

We also offer a professional DPF cleaning service if required.

Fitting Service at Turboworks

If you would like us to carry out the installation, our Eastbourne workshop is staffed by experienced mechanics whose day-to-day work includes turbocharger replacement, diagnostics, and related repairs.

If you are looking for a turbo specialist, click here to request a fitting quote, or call us directly on 07440 707 255 or 01323 301 999.

Please note that we do not offer a while-you-wait service. We will arrange a booking time that works for you.

Warranty Information

Unless otherwise stated, warranty is provided to the original purchaser for repair or replacement of the turbocharger for up to 2 years from date of purchase or 12,000 miles (whichever occurs first). Warranty covers the turbocharger for faulty workmanship or components and does not extend to damage caused by misuse in fitting or operation.

The reason for failure of the previous turbocharger must be rectified prior to fitting a replacement. Air and oil filters, engine oil, gaskets and the oil feed pipe need to be changed or replaced. Proof of purchase of components may be required to support any claims.

Proof and date of the original purchase will be required before considering any warranty claim, and the unit must be returned complete. Any attempt to dismantle or repair the unit will invalidate the conditions of warranty. Warranty does not cover any cost of labour or materials required to remove or reinstall the turbocharger.

Read full Warranty Information

Delivery & Dispatch

Delivery is available within the United Kingdom and internationally, subject to availability. Free delivery applies to turbochargers supplied to UK mainland addresses unless otherwise stated. Delivery timeframes provided are estimates only.

Stock items are typically dispatched the same day when orders are placed before 3 pm. Orders placed after 3 pm, over a weekend, or on a bank holiday will normally be dispatched on the next working day.

Non-stock or special-order items are subject to lead times, which will be confirmed separately. Certain geographical locations may require extended delivery periods.

Please inspect goods immediately upon delivery. Where packaging is visibly damaged, delivery should be refused and reported without delay.

Read full Collection and Delivery information

Returns

If you need to return a turbocharger or send a unit back to us, please contact us first so we can advise on the correct process.

Where a unit is being returned or collected, it must be securely packaged in a suitable, rigid cardboard box and adequately protected using appropriate packaging materials. Non-essential components, including oil feed pipes, oil return pipes, sensors, wiring, brackets, and ancillary fittings, should be removed before sending.

Where return shipment is arranged by the customer, please retain proof of shipment and tracking details.

Turbocharger Guides & Advice

Please check your turbocharger part number before ordering. Many vehicles use more than one turbocharger version depending on model year, engine code, power output, emissions setup and actuator type.

If you are unsure whether your turbocharger has failed, or you want to understand common causes of turbo problems before ordering, visit our technical information hub.

For Turboworks updates, buying guidance and practical articles about replacement turbochargers, visit our blog.

Need help confirming compatibility?

Contact Turboworks on 07440 707 255 or 01323 301 999.
Based in Eastbourne - specialists in turbocharger replacement, supply, and diagnostics.

Condition:: Remanufactured
Fits to:: Audi A3, TT
Seat Ibiza, Leon, Toledo
Skoda Octavia
Volkswagen Golf, Bora, New Beetle, Polo GTI
Engine Code:: AJQ, APP, ARX, ARY, ATC, AUM, AUQ, AWP, BVP, BVR, BBU, BJX, BKV, BLZ, JAE, AWU, AWV, BEK, BKF, BNU
Power (BHP):: 150 / 163 / 180 / 190
Capacity (cm3):: 1.8 Petrol
Years:: Audi A3 1.8 1996 - 2006
Audi TT 1.8 1996 - 2006
Seat Ibiza 1.8 1999 - 2008
Seat Leon 1.8 1999 - 2008
Seat Toledo 1.8 1999 - 2008
Skoda Octavia 1.8 1997-2010
VW Beetle 1.8 1997-2014
VW Bora 1.8 1997-2014
VW Golf 1.8 1997-2014
VW Polo GTI 1.8 1997-2014
Part numbers:: 53039700052, 53039700094, 53039880052, 53039880094
OE numbers:: 06A145713D, 06A145704S, 06A145704SX, 06A145704SV, 06A145713B, 06A145713BX, 06A145713BV, 06A145713F, 06A145713FV, 06A145713FX, 06A145713DV, 06A145713L, 06A145713LV
06A145713LX, 06A145713M, 06A145713MX, 06A145713MV, 06A145713DX, 06A145713N, 06A145713NV, 06A145713NX, 06A145704T, 06A145704TV, 06A145704TX, 06A145702P, 06A145702PX, 06A145702PV