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Volkswagen MK4 Engine Coolant Flanges & Parts

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Cast Aluminum Thermostat Housing Kit

ES#3553466 - 462-121-vr-24vKT - Cast Aluminum Thermostat Housing Kit - Replace your inferior plastic housings - iABED Industries - Audi Volkswagen

Replace your inferior plastic housings affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Modification to water pipe may be required. Please see description for details.

Brand:
iABED Industries - Corporate Logo
ES#:
3553466
Mfg#:
462-121-VR-24VKT
Back Ordered
Auto Notify
$251.99

This product was last offered at the strikethrough price on
04-16-2026

$250.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heavy Duty Cast Aluminum Thermostat Housing

ES#3086042 - 006660ECS01 - Heavy Duty Cast Aluminum Thermostat Housing - The last thermostat housing you'll ever need! - ECS - Audi Volkswagen

The last thermostat housing you'll ever need! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3086042
Mfg#:
006660ECS01
In Stock
ON SALE! SAVE 40%
$83.99

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

$50.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Billet 24v Aluminum Water Pipe - Black

ES#2848080 - 003285ECS0101 - ECS Billet 24v Aluminum Water Pipe - Black - Designed to be the last water pipe you'll need to replace - ECS - Audi Volkswagen

Designed to be the last water pipe you'll need to replace affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2848080
Mfg#:
003285ECS0101
In Stock
$132.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing with Gasket

ES#4342251 - 022121117CS1 - Thermostat Housing with Gasket - Common point of failure or leaking for the cooling system - Febi - Audi Volkswagen

Common point of failure or leaking for the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
4342251
Mfg#:
022121117CS1
In Stock
$66.99

This product was last offered at the strikethrough price on
04-13-2026

$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Replacement Kit

ES#4017860 - CHS0647 - 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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
For vehicles with manual transmission only

Brand:
Rein - Corporate Logo
ES#:
4017860
Mfg#:
CHS0647
Ships in 1 Business Day
$141.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cast Aluminum Thermostat Housing

ES#3553457 - 462-121-VR47C - Cast Aluminum Thermostat Housing - Replace your inferior plastic housing - iABED Industries - Audi Volkswagen

Replace your inferior plastic housing affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Modification to water pipe may be required. Please see description for details.

Brand:
iABED Industries - Corporate Logo
ES#:
3553457
Mfg#:
462-121-VR47C
Back Ordered
Auto Notify
$169.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Billet 12v Water Pipe - Silver

ES#2807185 - 003244ECS0102 - ECS Billet 12v Water Pipe - Silver - 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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2807185
Mfg#:
003244ECS0102
In Stock
ON SALE!
$132.99

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

$129.00 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. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2807186
Mfg#:
003244ECS0101
In Stock
ON SALE! SAVE 33%
$129.99

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

$86.79 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Billet 24v Aluminum Water Pipe - Silver

ES#2848081 - 003285ECS0102 - ECS Billet 24v Aluminum Water Pipe - Silver - Pipe from back of water pump to thermostat housing, located under intake manifold. Engineered to be the last water pipe you'll need to replace - ECS - Audi Volkswagen

Pipe from back of water pump to thermostat housing, located under intake manifold. Engineered to be the last water pipe you'll need to replace affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2848081
Mfg#:
003285ECS0102
In Stock
$132.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#4196 - 022121117C - Thermostat Housing - Common point of failure or leaking for the cooling system - Genuine Volkswagen Audi - Audi Volkswagen

Common point of failure or leaking for the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4196
Mfg#:
022121117C
In Stock
2% off MSRP

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

$183.99

This product was last offered at the strikethrough price on
04-24-2026

$180.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing Cover

ES#269571 - 022121121E - Thermostat Housing Cover - Common source of coolant leaks around your thermostat - Genuine Volkswagen Audi - Audi Volkswagen

Common source of coolant leaks around your thermostat affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
269571
Mfg#:
022121121E
In Stock
11% off MSRP

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

$52.65

This product was last offered at the strikethrough price on
02-03-2026

$46.75 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Aluminum Water Distribution Pipe

ES#3028662 - 022121050 - Aluminum Water Distribution Pipe - Pipe from back of water pump to thermostat housing, located under intake manifold. Commonly referred to as the crack pipe. - URO - Audi Volkswagen

Pipe from back of water pump to thermostat housing, located under intake manifold. Commonly referred to as the crack pipe. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
URO - Corporate Logo
ES#:
3028662
Mfg#:
022121050
In Stock
$53.99

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

$38.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cast Aluminum Cooling System Upgrade Kit

ES#3086229 - 006368ecs01a1KT - Cast Aluminum Cooling System Upgrade Kit - Replace the failure prone components in your cooling system with cast aluminum - Assembled By ECS - Audi Volkswagen

Replace the failure prone components in your cooling system with cast aluminum affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with manual transmission or 4-speed automatic transmission only

Brand:
Assembled By ECS - Corporate Logo
ES#:
3086229
Mfg#:
006368ECS01A1KT
Back Ordered
Auto Notify
ON SALE! SAVE 25%
$231.99

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

$173.98 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange

ES#279315 - 06A121132AP - Coolant Flange - Located on the driver side of the cylinder head, this pipe contains the coolant tempature sensor - Genuine Volkswagen Audi - Audi Volkswagen

Located on the driver side of the cylinder head, this pipe contains the coolant tempature sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with 4-speed automatic or manual transmission from production date 09/01/2000 only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
279315
Mfg#:
06A121132AP
In Stock at Vendor
$79.99

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

$76.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cast Aluminum Coolant Flange

ES#3470644 - 462-121-132AP - Cast Aluminum Coolant Flange - Located on the driver side of the cylinder head, this pipe contains the coolant tempature sensor - iABED Industries - Audi Volkswagen

Located on the driver side of the cylinder head, this pipe contains the coolant tempature sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with 4-speed automatic or manual transmission from production date 09/01/2000 only

Brand:
iABED Industries - Corporate Logo
ES#:
3470644
Mfg#:
462-121-132AP
Back Ordered
Auto Notify
$49.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cast Aluminum Thermostat Housing Cover

ES#3553459 - 462-121-VR41E - Cast Aluminum Thermostat Housing Cover - Replace your inferior plastic housing cover - iABED Industries - Audi Volkswagen

Replace your inferior plastic housing cover affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
iABED Industries - Corporate Logo
ES#:
3553459
Mfg#:
462-121-VR41E
Back Ordered
Auto Notify
$39.99 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!

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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