What it is
This is the OEM exhaust flapper valve (also called a throttle valve) used on VW/Audi common-rail 2.0L TDI engines. It regulates exhaust backpressure as part of the EGR system.
Part numbers
Primary: 1K0253691D. Alternate/superseded numbers for the same part: 1K0253691J, 1K0253691F, 1K0253691G.
What else is needed for installation
This valve does not include everything needed for a complete replacement. Sold separately:
Fitment
2009-2014 VW Jetta, Jetta Sportwagen, Golf, Passat, and Audi A3, all with CJAA/CBEA 2.0L TDI engines.
Availability
Call to confirm current availability before ordering, this item is not guaranteed in-stock.
Common questions
Do I need to buy anything else to install this? Yes, the clamp (1K0253725B) and 2 gaskets (1K0253115AE) are required for installation and are sold as separate line items, not included with the valve.
Are there other part numbers for this same valve? Yes, 1K0253691J, 1K0253691F, and 1K0253691G are alternate numbers for the same part, likely reflecting running production changes.