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Volkswagen Passat B4 TDI

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Volkswagen Passat B4 TDI Engine Cooling Parts

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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

Expansion Tank Cap

ES#302253 - 1H0121321C - Expansion Tank Cap - Keep proper pressure in your coolant system - Genuine Volkswagen Audi - Volkswagen

Keep proper pressure in your coolant system

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
302253
Mfg#:
1H0121321C
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.

$54.58

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

$48.58 USD
Free Shipping
on orders $49 and up
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

Oil Cooler O-Ring

ES#2777 - 038117070 - Oil Cooler O-Ring - O-Ring between cover & oil cooler. 62.8mm - Victor Reinz - Volkswagen

O-Ring between cover & oil cooler. 62.8mm

Brand:
Victor Reinz - Corporate Logo
ES#:
2777
Mfg#:
038117070
In Stock
$4.07 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#2535131 - N90316802 - Sealing O-Ring - Priced Each - Seal for most clip-in cooling sensors/senders. M19.6x3.6mm - URO - Audi Volkswagen

Seal for most clip-in cooling sensors/senders. M19.6x3.6mm 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535131
Mfg#:
N90316802
In Stock
$1.26 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Round Seal - Priced Each

ES#2684298 - N90316801 - Round Seal - Priced Each - Seals sensors into coolant housings. 19.6x3.65 - Genuine Volkswagen Audi - Audi Volkswagen

Seals sensors into coolant housings. 19.6x3.65

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2684298
Mfg#:
N90316801
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Glow plug harness - priced each

ES#271342 - 028971782A - Glow plug harness - priced each - Electrical connection to coolant glow plug - Genuine Volkswagen Audi - Volkswagen

Electrical connection to coolant glow plug Coolant Glow Plug Harness - 3 required

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
271342
Mfg#:
028971782A
Ships in 1-2 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.

$62.99

This product was last offered at the strikethrough price on
08-13-2026

$58.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler

ES#2772 - 068117021B - Oil Cooler - Common source of undiscoverable coolant leaks - Vemo - Audi Volkswagen

Common source of undiscoverable coolant leaks

Brand:
Vemo - Corporate Logo
ES#:
2772
Mfg#:
068117021B
Ships in 1 Business Day
$72.99

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

$70.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Sealing O-Ring - Priced Each

ES#274529 - 037121687 - Coolant Flange Sealing O-Ring - Priced Each - Install a new o-ring for a proper seal. 36x3.15 - Genuine Volkswagen Audi - Audi Volkswagen

Install a new o-ring for a proper seal. 36x3.15

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
274529
Mfg#:
037121687
In Stock
30% off MSRP

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

$7.08

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

$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring - Priced Each

ES#2865801 - 038121119B - Thermostat O-Ring - Priced Each - Recommended when changing the thermostat - Febi - Audi Volkswagen

Recommended when changing the thermostat We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2865801
Mfg#:
038121119B
In Stock
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87°C

ES#276208 - 044121113 - Thermostat - 87C - Keep your car running at the proper temperature. Does not include o-ring - Genuine Volkswagen Audi - Audi Volkswagen

Keep your car running at the proper temperature. Does not include o-ring

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
276208
Mfg#:
044121113
Ships in 1-2 days
11% off MSRP

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

$72.99

This product was last offered at the strikethrough price on
08-03-2026

$64.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler O-Ring

ES#275103 - 038117070 - Oil Cooler O-Ring - O-Ring between cover & oil cooler. 62.8mm - Genuine Volkswagen Audi - Volkswagen

O-Ring between cover & oil cooler. 62.8mm

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275103
Mfg#:
038117070
In Stock
21% off MSRP

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

$18.99

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

$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Switch � 75-82�C

ES#1928244 - 1H0959481D - Auxiliary Fan Switch 75-82C - Square connector with rounded ends - Meyle - Audi Volkswagen

Square connector with rounded ends 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
For vehicles with square connector only

Brand:
Meyle - Corporate Logo
ES#:
1928244
Mfg#:
1H0959481D
Ships on Dec 10, 2026
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler

ES#4939952 - 068117021B - Oil Cooler - Common source of undiscoverable coolant leaks - Bremmen Parts - Audi Volkswagen

Common source of undiscoverable coolant leaks 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4939952
Mfg#:
068117021B
In Stock
ON SALE! SAVE 22%
$26.99

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

$20.99 USD

Oil Filter Adapter Gasket

ES#270997 - 028115441C - Oil Filter Adapter Gasket - Seals the oil filter adapter to the engine block - Genuine Volkswagen Audi - Audi Volkswagen

Seals the oil filter adapter to the engine block

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
270997
Mfg#:
028115441C
Ships in 2 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.

$20.99

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

$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Fan Switch Gasket

ES#9109 - N0438083 - Radiator Fan Switch Gasket - Install new hardware with your new parts. 22x29x1.50 - Victor Reinz - Audi Volkswagen

Install new hardware with your new parts. 22x29x1.50

Brand:
Victor Reinz - Corporate Logo
ES#:
9109
Mfg#:
N0438083
In Stock
$5.92 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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