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Volkswagen Passat Engine Cooling Parts

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Anti-Freeze Tester

ES#4337913 - CTAA195 - Anti-Freeze Tester - Tests all ethylene glycol solutions with radiator hot or cold - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Tests all ethylene glycol solutions with radiator hot or cold Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
CTA Tools - Corporate Logo
ES#:
4337913
Mfg#:
CTAA195
In Stock
$9.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank

ES#2814304 - 1J0121321B - Expansion Tank - Keep proper pressure in your coolant system - Hamburg Tech - Audi Volkswagen

Keep proper pressure in your coolant system Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2814304
Mfg#:
1J0121321B
Ships in 1 Business Day
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

O-RING (36 X 3.15MM)

ES#2800836 - 37121687 - O-RING (36 X 3.15MM) - Meistersatz - Audi Volkswagen

Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Meistersatz - Corporate Logo
ES#:
2800836
Mfg#:
37121687
In Stock at Vendor
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump O-Ring

ES#2800960 - 06A121119 - Water Pump O-Ring - Ensure a proper seal when installing a new water pump. 53x4mm - Meistersatz - Audi Volkswagen

Ensure a proper seal when installing a new water pump. 53x4mm Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For vehicles with FSI engines only

Brand:
Meistersatz - Corporate Logo
ES#:
2800960
Mfg#:
06A121119
Ships in 3 Business Days
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange

ES#5373852 - 1K0122291J - Coolant Flange - 90 degree fitting with quick coupling - Rein - Volkswagen

90 degree fitting with quick coupling 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Rein - Corporate Logo
ES#:
5373852
Mfg#:
1K0122291J
Ships in 3 Business Days
$4.99 USD
Free Shipping
on orders $49 and up

Cylinder Head Cooling Flange

ES#2709207 - 027121133E - Cylinder Head Cooling Flange - Located on the front of the block below the intake manifold, does not include gasket - URO - Volkswagen

Located on the front of the block below the intake manifold, does not include gasket 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2709207
Mfg#:
027121133E
Ships in 1 Business Day
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange

ES#2535193 - 028121132A - Coolant Flange - Located on the left side of the cylinder head, includes O-Ring - URO - Volkswagen

Located on the left side of the cylinder head, includes O-Ring 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!
AHU & 1Z Engine codes only

Brand:
URO - Corporate Logo
ES#:
2535193
Mfg#:
028121132A
Ships in 1 Business Day
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2709988 - 06B121121l - Thermostat Housing - Located on the left side of the engine block - URO - Audi Volkswagen

Located on the left side of the engine block 2X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!
For vehicles with AUG or AWM engine codes only.

Brand:
URO - Corporate Logo
ES#:
2709988
Mfg#:
06B121121L
Ships in 1 Business Day
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange O-Ring

ES#469529 - N90295401 - Coolant Flange O-Ring - Seals the breather assembly to the engine block (29.2x3) - Genuine Volkswagen Audi - Volkswagen

Seals the breather assembly to the engine block (29.2x3) Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
469529
Mfg#:
N90295401
Ships in 1 day
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat o-ring

ES#2831938 - WHT007713 - Thermostat o-ring - Seals thermostat in housing. 43mmx3.2mm - Genuine Volkswagen Audi - Volkswagen

Seals thermostat in housing. 43mmx3.2mm Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2831938
Mfg#:
WHT007713
In Stock
Limited Qty Sale
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Quick Disconnect Coolant Flange

ES#4830958 - 5Q0122291AB - Quick Disconnect Coolant Flange - A y shaped quick disconnect that attached directly to the water pump housing - Vaico - Audi Volkswagen

A y shaped quick disconnect that attached directly to the water pump housing Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4830958
Mfg#:
5Q0122291AB
Special Order: No Guaranteed ETA
$9.16 USD
Free Shipping
on orders $49 and up

Oil Cooler Hose - Supply

ES#2497 - 021121096 - Oil Cooler Hose - Supply - Connects water pipe to oil cooler - Meyle - Volkswagen

Connects water pipe to oil cooler 5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
2497
Mfg#:
021121096
Ships in 1 Business Day
$9.99

This product was last offered at the strikethrough price on
08-29-2026

$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Drain Plug

ES#429383 - 8D0121100 - Radiator Drain Plug - Used for quick removal of coolant - Genuine Volkswagen Audi - Audi Volkswagen

Used for quick removal of coolant Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
429383
Mfg#:
8D0121100
Ships in 1 day
10% off MSRP

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

$9.99

This product was last offered at the strikethrough price on
10-27-2026

$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Throttle Body Coolant Hose - Left

ES#4811056 - 078121188B - Throttle Body Coolant Hose - Left - Connects the coolant pipe to the throttle body - Vaico - Audi Volkswagen

Connects the coolant pipe to the throttle body Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!
For vehicles with ATQ engine code only

Brand:
Vaico - Corporate Logo
ES#:
4811056
Mfg#:
078121188B
Ships in 1 day
$10.99

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

$8.99 USD
Free Shipping
on orders $49 and up

Water Temperature Sensor - Brown/Black

ES#2091061 - 357919501A - Water Temperature Sensor - Brown/Black - 4-pin sensor for ECU - MTC - Volkswagen

4-pin sensor for ECU Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
MTC - Corporate Logo
ES#:
2091061
Mfg#:
357919501A
Ships in 9 Business Days
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler Hose - Supply

ES#2575462 - 06B121058S - Oil Cooler Hose - Supply - Connects the oil cooler to the hard water pipe - Meyle - Audi Volkswagen

Connects the oil cooler to the hard water pipe 5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!
For vehicles with AUG or AWM engine codes only.

Brand:
Meyle - Corporate Logo
ES#:
2575462
Mfg#:
06B121058S
Ships on Dec 10, 2026
$8.99 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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