1K0721388L Direct Fit Sensor Clutch Master Cylinder

Application
VW Touran I (1T1, 1T2) (Year of Construction 02.2003 - 05.2010, 90 - 170 PS, CNG, Diesel, Petrol)
VW Golf V Hatchback (1K1) (Year of Construction 10.2003 - 02.2009, 75 - 250 PS, Diesel, Petrol, Petrol/Ethanol)
VW Caddy III Van (2KA, 2KH, 2CA, 2CH) (Year of Construction 03.2004 - 05.2015, 70 - 170 PS, CNG, Diesel, Petrol, Petrol/Petroleum Gas (LPG))
VW Caddy III Estate (2KB, 2KJ, 2CB, 2CJ) (Year of Construction 03.2004 - 05.2015, 70 - 170 PS, CNG, Diesel, Petrol, Petrol/Petroleum Gas (LPG))
VW Golf Plus / Crossgolf (5M1, 521) (Year of Construction 01.2005 - 12.2013, 75 - 170 PS, Diesel, Petrol, Petrol/Ethanol, Petrol/Petroleum Gas (LPG))
VW Jetta Mk5 (1K) (Year of Construction 08.2005 - 10.2010, 90 - 200 PS, Diesel, Petrol, Petrol/Ethanol)
VW Eos (1F7, 1F8) (Year of Construction 03.2006 - 08.2015, 115 - 260 PS, Diesel, Petrol)
VW Golf V Variant (1K5) (Year of Construction 06.2007 - 07.2009, 80 - 200 PS, Diesel, Petrol, Petrol/Ethanol)
VW Scirocco III (137, 138) (Year of Construction 05.2008 - 11.2017, 122 - 280 PS, Diesel, Petrol)
VW Golf VI Hatchback (5K1) (Year of Construction 10.2008 - 11.2013, 80 - 270 PS, Diesel, Petrol, Petrol/Ethanol, Petrol/Petroleum Gas (LPG))
VW Golf VI Variant (AJ5) (Year of Construction 07.2009 - 07.2013, 80 - 200 PS, Diesel, Petrol, Petrol/Ethanol, Petrol/Petroleum Gas (LPG))
VW Jetta Mk6 (162, 163, AV3, AV2) (Year of Construction 04.2010 - ..., 86 - 211 PS, Diesel, Petrol)
VW Golf VI Convertible (517) (Year of Construction 03.2011 - 05.2016, 105 - 265 PS, Diesel, Petrol)
VW Beetle Hatchback (5C1, 5C2) (Year of Construction 04.2011 - 07.2019, 105 - 220 PS, Diesel, Petrol)
VW Touran I (1T3) (Year of Construction 05.2010 - 05.2015, 90 - 177 PS, Diesel, Petrol, Petrol/Natural Gas (CNG))
VW Beetle Convertible (5C7, 5C8) (Year of Construction 12.2011 - 07.2019, 105 - 220 PS, Diesel, Petrol)
VW Passat NMS (A32, A33) (Year of Construction 01.2011 - ..., 170 PS, Petrol)
VW Caddy IV Kombi (SAB, SAJ) (Year of Construction 05.2015 - ..., 75 - 150 PS, Diesel, Petrol, Petrol/Natural Gas (CNG))
VW Caddy IV Van (SAA, SAH) (Year of Construction 05.2015 - ..., 75 - 150 PS, Diesel, Petrol, Petrol/Natural Gas (CNG))
VW Caddy Alltrack IV Kombi (SAB) (Year of Construction 05.2015 - ..., 75 - 150 PS, Diesel, Petrol, Petrol/Natural Gas (CNG))
VW Caddy Alltrack IV Van (SAA) (Year of Construction 05.2015 - ..., 75 - 150 PS, Diesel, Petrol, Petrol/Natural Gas (CNG))
SKODA Octavia II Hatchback (1Z3) (Year of Construction 02.2004 - 06.2013, 75 - 200 PS, Diesel, Petrol, Petrol/Ethanol, Petrol/Petroleum Gas (LPG))
SKODA Octavia II Combi (1Z5) (Year of Construction 02.2004 - 06.2013, 75 - 200 PS, Diesel, Petrol, Petrol/Ethanol, Petrol/Petroleum Gas (LPG))
SKODA Superb II Hatchback (3T4) (Year of Construction 03.2008 - 05.2015, 105 - 260 PS, Diesel, Petrol)
SKODA Yeti (5L) (Year of Construction 05.2009 - 12.2017, 105 - 170 PS, Diesel, Petrol)
SKODA Superb II Estate (3T5) (Year of Construction 10.2009 - 05.2015, 105 - 260 PS, Diesel, Petrol)
SEAT Altea (5P1) (Year of Construction 03.2004 - ..., 86 - 200 PS, Diesel, Petrol, Petrol/Petroleum Gas (LPG))
SEAT Toledo III (5P2) (Year of Construction 04.2004 - 05.2009, 86 - 200 PS, Diesel, Petrol)
SEAT Leon II Hatchback (1P1) (Year of Construction 05.2005 - 12.2012, 86 - 265 PS, Diesel, Petrol, Petrol/Ethanol, Petrol/Petroleum Gas (LPG))
SEAT Altea XL (5P5, 5P8) (Year of Construction 10.2006 - ..., 86 - 211 PS, Diesel, Petrol, Petrol/Ethanol, Petrol/Petroleum Gas (LPG))
AUDI A3 Hatchback (8P1) (Year of Construction 05.2003 - 08.2012, 90 - 265 PS, Diesel, Petrol, Petrol/Ethanol)
AUDI A3 Sportback (8PA) (Year of Construction 09.2004 - 03.2013, 90 - 265 PS, Diesel, Petrol, Petrol/Ethanol)
AUDI TT Coupe (8J3) (Year of Construction 08.2006 - 06.2014, 160 - 360 PS, Diesel, Petrol)
AUDI TT Roadster (8J9) (Year of Construction 03.2007 - 06.2014, 160 - 360 PS, Diesel, Petrol)
AUDI A3 Convertible (8P7) (Year of Construction 04.2008 - 05.2013, 102 - 200 PS, Diesel, Petrol)

For platforms where the clutch pedal position or fluid level feeds into the vehicle's onboard electronics — sometimes tied to cruise control lockout, start-stop systems, or dash warning lights — a mismatched sensor connection means one of two things: the warning light stays on permanently, or a system that should be reading pedal input simply doesn't. Either way, the vehicle owner ends up back at the shop asking why the "new part" didn't fix the problem.

What sets the 1K0721388L Direct Fit Sensor Clutch Master Cylinder apart from a basic replacement unit is the integrated sensor, wired to match the connector layout on the vehicle's original harness without needing an adapter or splice.

Core Function
Mechanically, the job is the same as any clutch master cylinder: a piston inside the bore pushes fluid out toward the slave cylinder every time the pedal is pressed, and a return spring resets the piston once the pedal is released. That part hasn't changed in decades.
What the 1K0721388L Direct Fit Sensor Clutch Master Cylinder adds is the electronic side:
1. The sensor built into the housing reads pedal position or switch status
2. The signal passes through a connector shaped and pinned to match the factory harness
3. No rewiring, no adapter harness, no guessing which wire goes where

Customization Options
For buyers looking to bring the 1K0721388L Direct Fit Sensor Clutch Master Cylinder into their own retail or wholesale catalog, a few things can be arranged:
1. Packaging formats including blister packs, tube boxes, header cards, or PDQ display units
2. Private labeling for buyers who want their own branding instead of generic export packing
3. Delivery of a 40-foot container typically within about 20 working days
Anyone with a specific packaging spec or branding requirement is better off discussing the details directly, since the right format depends on the sales channel it's headed for.