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Volkswagen Passat Engine Cooling Parts

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Coolant Flange Replacement Kit

ES#4017762 - CHS0645 - Coolant Flange Replacement Kit - A comprehensive kit designed to service the commonly failing cooling system components in a single repair. - Rein - Audi Volkswagen

A comprehensive kit designed to service the commonly failing cooling system components in a single repair. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with AEB & ATW engine codes with D-shaped coolant temp sensor

Brand:
Rein - Corporate Logo
ES#:
4017762
Mfg#:
CHS0645
Back Ordered
Auto Notify
$56.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe

ES#4818598 - 1K0121070BD - Coolant Pipe - Pair of plastic coolant lines between the auxiliary water pump and lower expansion tank hose - Bremmen Parts - Audi Volkswagen

Pair of plastic coolant lines between the auxiliary water pump and lower expansion tank hose 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818598
Mfg#:
1K0121070BD
In Stock
ON SALE! SAVE 20%
$38.99

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

$31.19 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Oil Cooler

ES#3151120 - 06J117021Q - Engine Oil Cooler - Lowers engine oil temperature - Genuine Volkswagen Audi - Audi Volkswagen

Lowers engine oil temperature For vehicles with TSI engines only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3151120
Mfg#:
06J117021Q
Ships in 3 Business Days
7% off MSRP

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

$420.99

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

$392.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Kevlar Reinforced Accessory Belt - Alternator

ES#3677911 - 06B903137E - Performance Kevlar Reinforced Accessory Belt - Alternator - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. - ECS - Audi Volkswagen
ECS Tuning recommends this product.

Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3677911
Mfg#:
06B903137E
Ships on Oct 27, 2026
Auto Notify
$44.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core Return Hose

ES#315393 - 1K0122073FF - Heater Core Return Hose - Connects rear thermostat housing to heater core hoses - Genuine Volkswagen Audi - Volkswagen

Connects rear thermostat housing to heater core hoses For vehicles with manual transmission only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
315393
Mfg#:
1K0122073FF
Ships in 3 Business Days
7% off MSRP

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

$417.99

This product was last offered at the strikethrough price on
02-26-2026

$388.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbo Coolant Hose - Supply

ES#4818489 - 06J121497H - Turbo Coolant Hose - Supply - Keep your turbo system cooled properly - Bremmen Parts - Audi Volkswagen

Keep your turbo system cooled properly 10X Entries For Our 25th Anniversary Sweepstakes!

For vehicles with CBFA or CCTA engine code only

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818489
Mfg#:
06J121497H
In Stock
ON SALE! SAVE 21%
$104.99

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

$83.22 USD
Free Shipping
on orders $49 and up

Heater Core

ES#2522341 - 3C0819031A - Heater Core - Transforms hot coolant into warmth for your cabin - Genuine Volkswagen Audi - Volkswagen

Transforms hot coolant into warmth for your cabin

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2522341
Mfg#:
3C0819031A
Ships in 3 Business Days
7% off MSRP

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

$311.99

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

$290.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Upgraded Water Pump Thermostat Gasket Kit

ES#3536895 - 06H121026DD - Upgraded Water Pump Thermostat Gasket Kit - Includes the thermostat, temp sensor, union, and gaskets - Hamburg Tech - Audi Volkswagen

Includes the thermostat, temp sensor, union, and gaskets We Price Match - Give Us A Call or Chat!
For vehicles with TSI engines only

Brand:
Hamburg Tech - Corporate Logo
ES#:
3536895
Mfg#:
06H121026DD
In Stock
ON SALE! SAVE 40%
$323.52

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

$193.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

ES#2526478 - 037121005C - Water Pump - Outer housing with gasket & cast impeller - Geba - Audi Volkswagen

Outer housing with gasket & cast impeller

Brand:
Geba - Corporate Logo
ES#:
2526478
Mfg#:
037121005C
In Stock
ON SALE!
$104.99

This product was last offered at the strikethrough price on
05-07-2026

$96.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Oil Cooler Gasket

ES#3419357 - 06J117070C - Engine Oil Cooler Gasket - Connects oil cooler to oil filter housing - Elring - Audi Volkswagen

Connects oil cooler to oil filter housing 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with TSI engines only

Brand:
Elring - Corporate Logo
ES#:
3419357
Mfg#:
06J117070C
In Stock
$6.92 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Belt

ES#281439 - 06H121605E - Water Pump Belt - Recommended to be replaced with the water pump - Genuine Volkswagen Audi - Audi Volkswagen

Recommended to be replaced with the water pump For vehicles with TSI engines only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281439
Mfg#:
06H121605E
In Stock
20% off MSRP

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

$45.99

This product was last offered at the strikethrough price on
07-20-2026

$36.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Carbon Fiber Expansion Tank Cover Kit - Choose-Your-Cap

ES#4000840 - 025263ECS01 - Carbon Fiber Expansion Tank Cover Kit - Choose-Your-Cap - Select your own expansion tank cap to go along with your ECS Carbon Fiber Expansion Tank Cover Kit - ECS - Audi Volkswagen

Select your own expansion tank cap to go along with your ECS Carbon Fiber Expansion Tank Cover Kit 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4000840
Mfg#:
025263ECS01
In Stock
ON SALE!
Starting at $227.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Torx Bolt - Priced Each

ES#468845 - N10700201 - Torx Bolt - Priced Each - Bolt used in various areas on your European vehicle. M6x22 - Genuine Volkswagen Audi - Audi Volkswagen

Bolt used in various areas on your European vehicle. M6x22

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
468845
Mfg#:
N10700201
In Stock
42% off MSRP

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

$5.14

This product was last offered at the strikethrough price on
07-20-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Aluminum Water Pipe Kit - No Thermostat

ES#1884269 - VR6THKWACP - Aluminum Water Pipe Kit - No Thermostat - Complete kit of flanges and pipes, including the long lasting ECS aluminum water pipe - Assembled By ECS - Volkswagen

Complete kit of flanges and pipes, including the long lasting ECS aluminum water pipe 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
1884269
Mfg#:
VR6THKWACP
Ships in 2 Business Days
ON SALE!
$122.69

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

$122.21 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#3554517 - 03H121113E - Thermostat - Used to regulate coolant temperature - Genuine Volkswagen Audi - Volkswagen

Used to regulate coolant temperature

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3554517
Mfg#:
03H121113E
In Stock
6% off MSRP

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

$129.99

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

$121.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat (87°C)

ES#544 - 050121113C - Thermostat (87C) - Prevent overheating and premature engine wear. Includes O-ring - Mahle-Behr - Audi Volkswagen

Prevent overheating and premature engine wear. Includes O-ring

Brand:
Mahle-Behr - Corporate Logo
ES#:
544
Mfg#:
050121113C
In Stock
$24.99

This product was last offered at the strikethrough price on
05-21-2026

$24.26 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Cooling Parts

Optimize your engine cooling system performance and heater output with quality drive belts, coolant hoses, cooling system parts, and approved coolant fluids from ECS Tuning. Head off expensive repairs and untimely breakdowns with regularly scheduled cooling system inspection and maintenance.

Let us help you find the parts that fit your Volkswagen

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Manufacturer names and/or part numbers are used only for identification purposes.

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