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Volkswagen Golf IV TDI Engine Cooling Parts

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Expansion Tank Cap - Black

ES#4004591 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Rein - Audi Volkswagen Porsche

Keep proper pressure in your coolant system 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4004591
Mfg#:
5Q0121321
In Stock
$16.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2954031 - 038121121dkKT - Thermostat Replacement Kit - Maintain proper operating temperature with a new thermostat, housing and hardware - Genuine Volkswagen Audi - Volkswagen

Maintain proper operating temperature with a new thermostat, housing and hardware For vehicles with BEW engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2954031
Mfg#:
038121121DKKT
Ships in 1-2 days
$127.99

This product was last offered at the strikethrough price on
08-31-2026

$121.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87°C

ES#5335359 - 044121113 - Thermostat - 87C - Bring your car to operating temperature. - Bremmen Parts - Audi Volkswagen

Bring your car to operating temperature. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
5335359
Mfg#:
044121113
In Stock
ON SALE! SAVE 15%
$14.99

This product was last offered at the strikethrough price on
09-16-2026

$12.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Plug Kit - Priced Each

ES#2535191 - 357121140 - Coolant Flange Plug Kit - Priced Each - Includes the plug, o-ring and securing clip - URO - Audi Volkswagen

Includes the plug, o-ring and securing clip 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535191
Mfg#:
357121140
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cast Aluminum 4-way Outlet Coolant Distribution Pipe

ES#3470646 - 462-121-087C - Cast Aluminum 4-way Outlet Coolant Distribution Pipe - Replacement 4-way outlet at upper radiator hose in aluminum - iABED Industries - Audi Volkswagen

Replacement 4-way outlet at upper radiator hose in aluminum For BEW engine code and automatic transmission only

Brand:
iABED Industries - Corporate Logo
ES#:
3470646
Mfg#:
462-121-087C
Back Ordered
$24.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core

ES#3489800 - 1J1819031B - Heater Core - Stop coolant loss and cure a fogged windshield - Nissens - Audi Volkswagen

Stop coolant loss and cure a fogged windshield We Price Match - Give Us A Call or Chat!

Brand:
Nissens - Corporate Logo
ES#:
3489800
Mfg#:
1J1819031B
Ships in 3 Business Days
$117.99

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

$114.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2500836 - 06A121121C - Thermostat Housing - Common point of failure for the cooling system. Does not include O-Ring. - URO - Audi Volkswagen

Common point of failure for the cooling system. Does not include O-Ring. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2500836
Mfg#:
06A121121C
In Stock
$6.41 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler O-Ring

ES#2718036 - 038117070A - Oil Cooler O-Ring - Seals the connection between the oil cooler and the filter adapter. 59x5 - Elring - Audi Volkswagen

Seals the connection between the oil cooler and the filter adapter. 59x5 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
2718036
Mfg#:
038117070A
In Stock
$1.67 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Control Unit

ES#2708675 - 1J0919506E - Auxiliary Fan Control Unit - 1 large 4 pin connector and 1 small 10 pin connector - URO - Audi Volkswagen

1 large 4 pin connector and 1 small 10 pin connector 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
For vehicles with VIN up to 1J-X-800000, split is in the 1999 model year, vehicles with 10 pin connectors only

Brand:
URO - Corporate Logo
ES#:
2708675
Mfg#:
1J0919506E
Ships in 1 Business Day
$79.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#261234 - 038121119B - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat. 50x4 - Genuine Volkswagen Audi - Audi Volkswagen

Ensure a proper seal when installing your new thermostat. 50x4

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
261234
Mfg#:
038121119B
In Stock
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upper Radiator Coupler

ES#10458 - 1J0122291 - Upper Radiator Coupler - Coupler that connects the upper radiator hose to the radiator - Genuine Volkswagen Audi - Volkswagen

Coupler that connects the upper radiator hose to the radiator

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
10458
Mfg#:
1J0122291
Ships in 4 Business Days
10% off MSRP

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

$48.99

This product was last offered at the strikethrough price on
10-23-2026

$43.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#261042 - 1J0121321B - Expansion Tank Cap - Keep proper pressure in your coolant system - Genuine Volkswagen Audi - Audi Volkswagen

Keep proper pressure in your coolant system

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
261042
Mfg#:
1J0121321B
Ships in 4 Business Days
30% off MSRP

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

$39.99

This product was last offered at the strikethrough price on
10-23-2026

$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Pressure Tester

ES#2748355 - VAG1274/8BKT - Cooling System Pressure Tester - Test for cooling system leaks - Genuine Volkswagen Audi - Volkswagen

Test for cooling system leaks

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2748355
Mfg#:
VAG1274/8BKT
Ships on Dec 3, 2026
$300.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Radiator Core Support

ES#3188202 - 1J0805588T - Radiator Core Support - Replacement core support for your vehicle - Bremmen Parts - Volkswagen

Replacement core support for your vehicle 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
3188202
Mfg#:
1J0805588T
Back Ordered
ON SALE! SAVE 21%
$125.99

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

$99.09 USD
This product is lifetime replacement eligible Lifetime Replacement

Mishimoto Universal Curved Blade Electrical Fan - 12"

ES#4265262 - MMFAN-12C - Mishimoto Universal Curved Blade Electrical Fan - 12" - 1150 CFM. High performance push or pull fan with curved blades. - Mishimoto - Audi Volkswagen MINI Porsche

1150 CFM. High performance push or pull fan with curved blades.

Brand:
Mishimoto - Corporate Logo
ES#:
4265262
Mfg#:
MMFAN-12C
Ships in 3 Business Days
$96.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Fan Shroud

ES#4361999 - 34-2301 - Radiator Fan Shroud - Allows you to run a 9" & 13" Spal slim fan setup - Fabless Manufacturing - Volkswagen

Allows you to run a 9" & 13" Spal slim fan setup

Brand:
Fabless Manufacturing - Corporate Logo
ES#:
4361999
Mfg#:
34-2301
Ships on Nov 16, 2026
$279.00 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.

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

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