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Clutch Master Cylinder Assembly For VW Audi SEAT Skoda | 2Q0721405

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Availability: Out of stock SKU: TVW2Q0721405_313
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Check part compatibility by using our vehicle filter options below. If you find your car, this part is compatible.

Clutch Master Cylinder for VW, Audi, SEAT & Skoda – OEM 2Q0721405

Spongy clutch pedal, a pedal that sticks to the floor or trouble selecting gears on your Audi A1, SEAT Ibiza, Arona or Skoda Fabia?

A leaking or worn clutch master cylinder is a common cause of these problems. This aftermarket clutch master cylinder is a direct replacement for OEM part number 2Q0721405, cross-referenced with 6R0721405B. With a 15.9 mm bore and a glass-fibre reinforced plastic body, it restores hydraulic pressure for a firm pedal and smooth gear changes on manual Volkswagen Group models.

Key Benefits

  • Fixes Clutch Pedal Problems

    Helps fix a soft or spongy pedal, a pedal that stays down, and difficulty shifting gears.

  • 15.9 mm Bore

    Matches the original piston diameter for normal pedal feel and responsive clutch action.

  • Direct Fit

    Matches the mounting points and hydraulic line ports of OEM 2Q0721405 and 6R0721405B.

  • Reinforced Body & Seals

    Glass-fibre reinforced polyamide (PA 6.6) body with heavy-duty internal seals to resist cracks and fluid leaks.

Check Compatibility Before Ordering

Compare your vehicle details and OE number before ordering.

  1. Use the vehicle filter on this page, or find your model below and check the engine, chassis and year.
  2. Compare the OE number on your existing part with the OE/OEM numbers for this part.
MakesVW, Audi, SEAT, Skoda
GearboxManual only
Bore15.9 mm
YearsVaries by model – see below

This clutch master cylinder is listed for the Audi A1 (including Sportback, Allstreet and City Carver), the SEAT Arona, Ibiza and Toledo, and the Skoda Fabia and Kamiq manual models below, along with other VW Group models.

Select your model to see compatible engines, chassis and years:

Audi A18 fitments · 2014–2018
Engine / Type Chassis Year
1.6 TDI 8X1, 8XK 2014–2018
1.0 TFSI 8X1, 8XK 2015–2018
1.4 TFSI 8X1, 8XK 2014–2018
1.4 TSI 8X1, 8XK 2014–2018
1.4 TDI 8X1, 8XK 2014–2018
S1 quattro 8X1, 8XK 2014–2018
1.0 TFSI 8X1, 8XK 2016–2018
1.8 TFSI 8X1, 8XK 2015–2018
Audi A1 Allstreet3 fitments · 2022–Present
Engine / Type Chassis Year
35 TFSI GBH 2022–Present
25 TFSI GBH 2022–Present
30 TFSI GBH 2022–Present
Audi A1 City Carver4 fitments · 2019–2022
Engine / Type Chassis Year
35 TFSI GBH 2019–2022
30 TFSI GBH 2019–2022
25 TFSI GBH 2019–2022
30 TFSI GBH 2020–2022
Audi A1 Sportback15 fitments · 2014–Present
Engine / Type Chassis Year
1.6 TDI 8XA, 8XF 2014–2018
1.0 TFSI 8XA, 8XF 2015–2018
1.4 TFSI 8XA, 8XF 2014–2018
1.4 TSI 8XA, 8XF 2014–2018
1.4 TDI 8XA, 8XF 2014–2018
S1 quattro 8XA, 8XF 2014–2018
1.0 TFSI 8XA, 8XF 2016–2018
1.8 TFSI 8XA, 8XF 2015–2018
1.4 30 TFSI 8XA, 8XF 2016–2018
30 TFSI GBA 2020–Present
30 TFSI GBA 2018–Present
25 TFSI GBA 2018–Present
35 TFSI GBA 2018–Present
40 TFSI GBA 2018–Present
40 TFSI GBA 2021–Present
SEAT Arona6 fitments · 2017–Present
Engine / Type Chassis Year
1.6 TDI KJ7, KJP 2017–Present
1.0 TSI KJ7, KJP 2017–Present
1.0 TSI KJ7, KJP 2020–Present
1.0 TGi KJ7, KJP 2018–Present
1.5 TSI KJ7, KJP 2017–Present
1.6 SRE KJ7, KJP 2017–Present
SEAT Ibiza IV6 fitments · 2015–2017
Engine / Type Chassis Year
1.2 TSI 6J5, 6P1 2015–2017
1.0 TSI 6J5, 6P1 2015–2017
1.4 TDI 6J5, 6P1 2015–2017
1.4 TSI 6J5, 6P1 2015–2017
1.0 6J5, 6P1 2015–2017
1.6 6J5, 6P1 2015–2017
SEAT Ibiza IV SC7 fitments · 2015–2016
Engine / Type Chassis Year
1.2 TSI 6J1, 6P5 2015–2016
1.8 TSI Cupra 6J1, 6P5 2015–2016
1.0 TSI 6J1, 6P5 2015–2016
1.4 TSI 6J1, 6P5 2015–2016
1.4 TDI 6J1, 6P5 2015–2016
1.0 6J1, 6P5 2015–2016
1.6 6J1, 6P5 2015–2016
SEAT Ibiza IV ST5 fitments · 2015–2016
Engine / Type Chassis Year
1.2 TSI 6J8, 6P8 2015–2016
1.0 TSI 6J8, 6P8 2015–2016
1.4 TDI 6J8, 6P8 2015–2016
1.4 TSI 6J8, 6P8 2015–2016
1.0 6J8, 6P8 2015–2016
SEAT Ibiza V8 fitments · 2017–Present
Engine / Type Chassis Year
1.0 MPi KJ1, KJG 2018–Present
1.0 KJ1, KJG 2017–Present
1.5 TSI KJ1, KJG 2017–Present
1.6 TDI KJ1, KJG 2017–Present
1.0 TSI KJ1, KJG 2017–Present
1.0 TGI KJ1, KJG 2017–Present
1.0 TSI KJ1, KJG 2020–Present
1.6 KJ1, KJG 2017–Present
SEAT Toledo IV12 fitments · 2012–2019
Engine / Type Chassis Year
1.0 TSI KG3 2017–2019
1.4 TDI KG3 2015–2019
1.2 TSI KG3 2015–2017
1.6 TDI KG3 2015–2019
1.6 TDI KG3 2013–2015
1.4 TSI KG3 2015–2019
1.6 KG3 2015–2019
1.2 KG3 2012–2015
1.2 TSI KG3 2012–2015
1.4 TSI KG3 2012–2015
1.6 TDI KG3 2012–2015
1.6 KG3 2013–2015
Skoda Fabia III8 fitments · 2014–2021
Engine / Type Chassis Year
1.2 TSI NJ3 2014–2021
1.0 NJ3 2014–2021
1.4 TDI NJ3 2015–2021
1.4 TDI NJ3 2014–2021
1.6 NJ3 2015–2021
1.0 TSI NJ3 2014–2021
1.4 TSI R5 NJ3 2018–2021
1.6 NJ3 2014–2021
Skoda Fabia III Estate7 fitments · 2014–2022
Engine / Type Chassis Year
1.2 TSI NJ5 2014–2022
1.0 NJ5 2014–2022
1.4 TDI NJ5 2015–2022
1.4 TDI NJ5 2014–2022
1.6 NJ5 2015–2022
1.0 TSI NJ5 2014–2022
1.6 NJ5 2014–2022
Skoda Fabia III Praktik4 fitments · 2014–2022
Engine / Type Chassis Year
1.0 NJ5 2014–2022
1.2 TSI NJ5 2014–2022
1.4 TDI NJ5 2014–2022
1.4 TDI NJ5 2015–2022
Skoda Fabia IV5 fitments · 2021–Present
Engine / Type Chassis Year
1.0 TSI PJ3 2021–Present
1.0 MPI PJ3 2021–Present
1.5 TSI PJ3 2021–Present
1.6 PJ3 2021–Present
1.0 TSI PJ3 2024–Present
Skoda Kamiq2 fitments · 2019–Present
Engine / Type Chassis Year
1.6 TDI NW4 2019–Present
1.5 TSI NW4 2019–Present

Your model not listed?

This list shows the main compatible vehicles. The part also fits other VW Group models, including Volkswagen. Please supply us with your VIN number or Reg number in our live chat or contact form and we will confirm fitment.

Get Help With Fitment

OE / OEM Numbers

Compare the OE number on your existing part before ordering.

  • 2Q0721405
  • 2Q0 721 405
  • 6R0721405B
  • 6R0 721 405 B
  • 6R0721410
  • 6R0 721 410
  • 6R0 721 543
  • 6R0721152
  • 2Q0721388
  • 2QB721388
  • 2QB721388A
  • 6R0721388D

Product Specifications

Product Clutch Master Cylinder
OE Part Number 2Q0721405
Bore Diameter 15.9 mm
Material Glass-fibre reinforced polyamide (PA 6.6)
Pedal Sensor Not included
Quantity 1
Our SKU TVW2Q0721405_313

Important Information

Before you order

Please use our make-model-year tool to check this part's compatibility with your vehicle. However, please note that our tool is for reference only and we recommend that you check the part number on your old unit prior to purchasing.

When fitting

Move the clutch pedal sensor across from your old unit, then bleed the clutch hydraulic system with the correct fluid so the pedal feels firm.

FAQs – Clutch Master Cylinder (2Q0721405)

Is this a genuine VAG part or an aftermarket part?

This is a quality aftermarket replacement, built to match the original 2Q0721405 part for fit and function.

Is 2Q0721405 the same as 2Q0721405C?

The letter at the end is usually a later revision of the same part. These versions are generally interchangeable, but always check the number on your old unit or contact us with your VIN or registration before ordering.

Does it include the clutch pedal position sensor?

No. This is the hydraulic master cylinder only. The electrical clutch pedal sensor is moved over from your old unit when fitting.

What are the signs of a failing clutch master cylinder?

  • Soft or spongy clutch pedal
  • Pedal sticking to the floor or slow to return
  • Difficulty selecting gears, especially from cold
  • Fluid leaks around the pedal box or a dropping fluid level

How can I be sure it fits my car?

It is for manual gearbox models only. Match the number stamped on your old part, or send us your UK registration number or 17-digit VIN and we will confirm fitment before you order.

  1. Standard Shipping (Free) - Please allow 1-3 days for your order to be delivered 
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  4. International - Rates vary based on product size. Please enquire for further details. 

    We do not provide any guarantees on shipping times, as we are reliant on 3rd parties. However, we strive to ensure that our customers are always satisfied.

    All products are protected by a upto 10 year worry-free warranty depending on Part 

    Warranty Coverage: Eligibility: To be eligible for 10-year warranty coverage, the car part must be fitted by a certified professional mechanic. Proof of fitment, including the mechanic's certification, must be submitted to Amesplan LTD within 30 days of the part's purchase date. Please send supporting documentation to us via email.In case a purchased product becomes faulty during its warranty period, for reasons unrelated to your acts, omissions or misuse of the goods, you must promptly notify us and fill out a warranty claim form. 

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    We have a 180-day return policy, which means you have 180 days after receiving your item to request a return. 

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