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Volkswagen Passat Engine Coolant Flanges & Parts

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Thermostat/Water Pump Kit (Updated)

ES#4699573 - 06L121111P - Thermostat/Water Pump Kit (Updated) - Advanced design with fewer moving parts and lower weight - without sacrificing cooling performance or warm-up temperature curve. Includes thermostat, water pump, union, and o-rings - Bremmen Parts - Audi Volkswagen Porsche
ECS Tuning recommends this product.

Advanced design with fewer moving parts and lower weight - without sacrificing cooling performance or warm-up temperature curve. Includes thermostat, water pump, union, and o-rings 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4699573
Mfg#:
06L121111P
In Stock
ON SALE! SAVE 10%
$250.99

This product was last offered at the strikethrough price on
07-16-2026

$225.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat/Water Pump Kit

ES#3624235 - 06L121111J - Thermostat/Water Pump Kit - Includes thermostat, water pump, gasket, and belt! - Ina - Audi Volkswagen Porsche
ECS Tuning recommends this product.

Includes thermostat, water pump, gasket, and belt! We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
3624235
Mfg#:
06L121111J
In Stock
$323.99

This product was last offered at the strikethrough price on
04-07-2026

$305.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upgraded Heavy Duty Thermostat / Water Pump Belt Kit

ES#4818763 - 06L121111P - Upgraded Heavy Duty Thermostat / Water Pump Belt Kit - Includes thermostat, water pump, belt, union, and O-rings. - Hamburg Tech - Audi Volkswagen Porsche

Includes thermostat, water pump, belt, union, and O-rings. We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
4818763
Mfg#:
06L121111P
In Stock
$267.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat/Water Pump Kit - With Belt

ES#5425238 - 06L121111J - Thermostat/Water Pump Kit - With Belt - Advanced design with fewer moving parts and lower weight - without sacrificing cooling performance or warm-up temperature curve. Includes thermostat, water pump, union, and belt. - Bremmen Parts - Audi Volkswagen Porsche

Advanced design with fewer moving parts and lower weight - without sacrificing cooling performance or warm-up temperature curve. Includes thermostat, water pump, union, and belt. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5425238
Mfg#:
06L121111J
In Stock
$270.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat / Water Pump Replacement Kit

ES#3996455 - 06l121111hKT3 - Thermostat / Water Pump Replacement Kit - Includes necessary parts to replace the thermostat - Genuine Volkswagen Audi - Audi Volkswagen

Includes necessary parts to replace the thermostat

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3996455
Mfg#:
06L121111HKT3
In Stock
$674.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat / Water Pump Replacement Kit

ES#3464963 - 06l121111hKT - Thermostat / Water Pump Replacement Kit - Includes necessary parts to replace the thermostat - Genuine Volkswagen Audi - Audi Volkswagen

Includes necessary parts to replace the thermostat

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3464963
Mfg#:
06L121111HKT
In Stock
$736.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat Housing With Water Pump

ES#3991461 - 06K121111P - Thermostat Housing With Water Pump - Includes thermostat - Geba - Volkswagen

Includes thermostat

Brand:
Geba - Corporate Logo
ES#:
3991461
Mfg#:
06K121111P
In Stock
$170.05

This product was last offered at the strikethrough price on
04-10-2026

$169.02 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Billet Coolant Vent Union

ES#4810768 - 034-102-Z048 - 034Motorsport Billet Coolant Vent Union - Designed to replace the factory plastic and failure-prone coolant union on the cylinder head of the EA888 Gen3 and Gen4 engines. - 034Motorsport - Audi Volkswagen

Designed to replace the factory plastic and failure-prone coolant union on the cylinder head of the EA888 Gen3 and Gen4 engines.

Brand:
034Motorsport - Corporate Logo
ES#:
4810768
Mfg#:
034-102-Z048
In Stock
ON SALE! SAVE 10%
$31.00

This product was last offered at the strikethrough price on
06-28-2026

$27.90 USD
Free Shipping

Thermostat

ES#4671694 - 06L121111N - Thermostat - Includes housing and gasket - Genuine Volkswagen Audi - Audi Volkswagen

Includes housing and gasket

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4671694
Mfg#:
06L121111N
In Stock
8% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$536.87

This product was last offered at the strikethrough price on
07-19-2026

$494.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat/Water Pump Kit

ES#4039367 - 06L121111H - Thermostat/Water Pump Kit - Includes thermostat, water pump, gasket, and belt. Made in Germany! - Vemo - Audi Volkswagen

Includes thermostat, water pump, gasket, and belt. Made in Germany!

Brand:
Vemo - Corporate Logo
ES#:
4039367
Mfg#:
06L121111H
Ships on Nov 10, 2026
ON SALE!
$376.99

This product was last offered at the strikethrough price on
07-14-2026

$365.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2925745 - 06K121111P - Thermostat Housing - Includes thermostat and housing gasket - Genuine Volkswagen Audi - Volkswagen

Includes thermostat and housing gasket

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2925745
Mfg#:
06K121111P
In Stock
Limited Qty Sale
$505.99

This product was last offered at the strikethrough price on
05-02-2026

$374.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Billet 12v Water Pipe - Black

ES#2807186 - 003244ECS0101 - ECS Billet 12v Water Pipe - Black - Bypass pipe located underneath intake manifold. Designed to be the last water pipe you'll need to replace. - ECS - Volkswagen

Bypass pipe located underneath intake manifold. Designed to be the last water pipe you'll need to replace. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2807186
Mfg#:
003244ECS0101
In Stock
ON SALE! SAVE 10%
$132.99

This product was last offered at the strikethrough price on
06-13-2026

$119.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#4669273 - 06K121111P - Thermostat Housing - Includes thermostat and housing gasket - URO - Volkswagen

Includes thermostat and housing gasket 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4669273
Mfg#:
06K121111P
Ships in 1 Business Day
$129.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat / Water Pump Replacement Kit

ES#4829986 - 06L121111PKT - Thermostat / Water Pump Replacement Kit - Includes necessary parts to replace the thermostat and water pump - Assembled By ECS - Audi Volkswagen

Includes necessary parts to replace the thermostat and water pump 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4829986
Mfg#:
06L121111PKT
In Stock at Vendor
$604.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Metal Cooling Hose Adapter/Breather Assembly

ES#4715589 - 06K121143PRM - Metal Cooling Hose Adapter/Breather Assembly - Mounts in cylinder head for coolant hose connection. Upgrade from the factory brittle plastic! - URO - Audi Volkswagen

Mounts in cylinder head for coolant hose connection. Upgrade from the factory brittle plastic! 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4715589
Mfg#:
06K121143PRM
In Stock
$26.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Coolant Flanges & Parts

Replace a cracked or failed coolant flange with a brand new coolant flange to stop those leaks!

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