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Volkswagen MK4 Engine Cooling Parts

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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 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

Auxiliary Water Pump

ES#2681717 - 3d0965561d - Auxiliary Water Pump - This is a new unit, not rebuilt - Bosch - Audi Volkswagen

This is a new unit, not rebuilt 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
2681717
Mfg#:
3D0965561D
In Stock at Vendor
$154.84 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor

ES#4818427 - 059919501A - Coolant Temperature Sensor - Green coolant temp sensor, located commonly in the cooling flange near the head - Bremmen Parts - Audi Volkswagen

Green coolant temp sensor, located commonly in the cooling flange near the head 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4818427
Mfg#:
059919501A
In Stock
ON SALE! SAVE 24%
$15.99

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

$12.23 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

Auxiliary Fan Assembly - 290MM

ES#2748162 - 1J0959455R - Auxiliary Fan Assembly - 290MM - Direct replacement auxiliary fan. Please check your stock fan size before ordering. - URO - Audi Volkswagen

Direct replacement auxiliary fan. Please check your stock fan size before ordering. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2748162
Mfg#:
1J0959455R
In Stock at Vendor
$98.99

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

$95.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

ES#2794822 - 06A121011L - Water Pump - Featuring a metal impeller - URO - Audi Volkswagen

Featuring a metal impeller 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2794822
Mfg#:
06A121011L
In Stock
$44.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#3683 - N90365302 - Sealing O-Ring - Priced Each - Install a new o-ring for a proper seal. 20X3 - Corteco - Audi Volkswagen

Install a new o-ring for a proper seal. 20X3

Brand:
Corteco - Corporate Logo
ES#:
3683
Mfg#:
N90365302
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Replacement Kit

ES#2718057 - 021121004X - Water Pump Replacement Kit - Refresh your accessory belt system during your water pump replacement - Assembled By ECS - Volkswagen

Refresh your accessory belt system during your water pump replacement 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with air conditioning only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2718057
Mfg#:
021121004X
Ships in 1 day
$399.99

This product was last offered at the strikethrough price on
06-21-2026

$341.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

8 Piece Fluid Line Stopper Kit

ES#2748908 - 005939SCH01A - 8 Piece Fluid Line Stopper Kit - This kit contains 2 of each size Shark type clamps designed to make a temporary seal on the end of an open line. Includes clamps with 5/16",3/8" and 1/2" open slot. Also contains double seal clamps for banjo style fittings. - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

This kit contains 2 of each size Shark type clamps designed to make a temporary seal on the end of an open line. Includes clamps with 5/16",3/8" and 1/2" open slot. Also contains double seal clamps for banjo style fittings. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
2748908
Mfg#:
005939SCH01A
In Stock
ON SALE! SAVE 23%
$54.99

This product was last offered at the strikethrough price on
04-26-2026

$42.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Cooling System Refresh Kit - Performance

ES#2586603 - MKIVGLICOOLKT2 - ECS Cooling System Refresh Kit - Performance - This comprehensive kit eliminates weak spots in your cooling system and replaces them with performance options. Black hoses - Assembled By ECS - Volkswagen

This comprehensive kit eliminates weak spots in your cooling system and replaces them with performance options. Black hoses 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with AWW or AWD engine code only. Also fits vehicles with AWP engine code with manual transmission.

Brand:
Assembled By ECS - Corporate Logo
ES#:
2586603
Mfg#:
MKIVGLICOOLKT2
Back Ordered
$1003.87

This product was last offered at the strikethrough price on
07-25-2026

$1000.05 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Aluminum Water Pipe Kit - Stage 1

ES#2718478 - VR624VTHKR322 - Aluminum Water Pipe Kit - Stage 1 - Featuring ECS silver aluminum water pipe and URO thermostat housing - Assembled By ECS - Audi Volkswagen

Featuring ECS silver aluminum water pipe and URO thermostat housing 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2718478
Mfg#:
VR624VTHKR322
In Stock
ON SALE!
$263.02

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

$249.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

ES#3149404 - 022121011 - Water Pump - Featuring a metal impeller - Rein - Audi Volkswagen

Featuring a metal impeller 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3149404
Mfg#:
022121011
In Stock at Vendor
$111.99

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

$108.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank Cap

ES#4858532 - 2Q0121321A - Coolant Expansion Tank Cap - Keep proper pressure in your coolant system - Bremmen Parts - Audi Volkswagen Porsche

Keep proper pressure in your coolant system 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4858532
Mfg#:
2Q0121321A
In Stock
ON SALE! SAVE 22%
$19.99

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

$15.50 USD
Free Shipping
on orders $49 and up

Sealing O-Ring - Priced Each

ES#264172 - N90316802 - Sealing O-Ring - Priced Each - Seal for most clip-in cooling sensors/senders. M19.6x3.6mm - Genuine Volkswagen Audi - Audi Volkswagen

Seal for most clip-in cooling sensors/senders. M19.6x3.6mm

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
264172
Mfg#:
N90316802
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Water Pipe Kit - Stage 1

ES#2770623 - VR612VTHKWT1KT - ECS Tuning Water Pipe Kit - Stage 1 - Replace your commonly leaking or failed plastic cooling pieces with this Stage 1 Cooling System Kit - Features ECS billet aluminum water pipe in black - Assembled By ECS - Volkswagen

Replace your commonly leaking or failed plastic cooling pieces with this Stage 1 Cooling System Kit - Features ECS billet aluminum water pipe in black 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2770623
Mfg#:
VR612VTHKWT1KT
In Stock
ON SALE! SAVE 13%
$214.99

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

$188.11 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap - Black

ES#3690266 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Vaico - Audi Volkswagen Porsche

Keep proper pressure in your coolant system We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
3690266
Mfg#:
5Q0121321
Ships in 1 day
$18.99 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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