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Volkswagen Passat Engine Cooling Parts

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Secondary Radiator

ES#315315 - 1K0121212C - Secondary Radiator - Used to assist the main radiator in cooling - Genuine Volkswagen Audi - Volkswagen

Used to assist the main radiator in cooling For vehicles with VIN up to 3C-6-240 000 only, split is in the 2006 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
315315
Mfg#:
1K0121212C
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.

$306.99

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

$284.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Hose - Engine oil cooler to water pipe

ES#2642888 - 078121096AD - Water Hose - Engine oil cooler to water pipe - Connects coolant pipe to oil cooler housing - Rein - Audi Volkswagen

Connects coolant pipe to oil cooler housing 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2642888
Mfg#:
078121096AD
In Stock
ON SALE!
$19.99

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

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

Oil Cooler Hose - Return

ES#2627319 - 06B121058 - Oil Cooler Hose - Return - Connects the oil cooler to the hard water tube - Rein - Audi Volkswagen

Connects the oil cooler to the hard water tube 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
For vehicles with AUG or AWM engine codes only.

Brand:
Rein - Corporate Logo
ES#:
2627319
Mfg#:
06B121058
In Stock
ON SALE!
$33.99

This product was last offered at the strikethrough price on
08-26-2026

$31.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Heater Core

ES#433318 - 8D1819030B - Heater Core - Stop coolant loss and cure a fogged windshield - Genuine Volkswagen Audi - Audi Volkswagen

Stop coolant loss and cure a fogged windshield

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
433318
Mfg#:
8D1819030B
Ships in 1-2 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.

$311.99

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

$280.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe

ES#281538 - 06J121065F - Coolant Pipe - Connects water pump to cylinder head coolant flange - Genuine Volkswagen Audi - Volkswagen

Connects water pump to cylinder head coolant flange For vehicles with CBFA or CCTA engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281538
Mfg#:
06J121065F
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.

$74.99

This product was last offered at the strikethrough price on
09-04-2026

$69.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80°C

ES#282068 - 075121113D - Thermostat - 80C - Does not include sealing O-Ring - Genuine Volkswagen Audi - Audi Volkswagen

Does not include sealing O-Ring

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
282068
Mfg#:
075121113D
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.

$59.99

This product was last offered at the strikethrough price on
09-04-2026

$55.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Water Pump

ES#3235555 - 1K0965561G - Auxiliary Water Pump - Secondary pump for more efficient cooling - Gates - Audi Volkswagen

Secondary pump for more efficient cooling For vehicles with BPY engine code only

Brand:
Gates - Corporate Logo
ES#:
3235555
Mfg#:
1K0965561G
Ships in 1 Business Day
$312.99

This product was last offered at the strikethrough price on
08-25-2026

$276.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Cooling Flange

ES#275814 - 03H121133 - Cylinder Head Cooling Flange - Located on the side of the engine attached to the thermostat housing - Genuine Volkswagen Audi - Audi Volkswagen

Located on the side of the engine attached to the thermostat housing

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
275814
Mfg#:
03H121133
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.

$58.99

This product was last offered at the strikethrough price on
09-04-2026

$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt - Power Steering/Water Pump

ES#546 - 11X528 - Accessory Belt - Power Steering/Water Pump - Replace your cracked or worn belt - Continental - Audi Volkswagen

Replace your cracked or worn belt We Price Match - Give Us A Call or Chat!
For vehicles with AEB or ATW engine codes only.

Brand:
Continental - Corporate Logo
ES#:
546
Mfg#:
11X528
Back Ordered
Auto Notify
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Hose

ES#4810738 - 3C0122157FH - Coolant Hose - Connects heater core supply hose to cylinder head - Rein - Audi Volkswagen

Connects heater core supply hose to cylinder head 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Fits vehicles with CCTA engine code only

Brand:
Rein - Corporate Logo
ES#:
4810738
Mfg#:
3C0122157FH
In Stock at Vendor
ON SALE!
$71.99

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

$68.39 USD
Free Shipping
on orders $49 and up

Water Pump

ES#3470821 - 022121011B - Water Pump - Brand new unit - Genuine Volkswagen Audi - Audi Volkswagen

Brand new unit

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3470821
Mfg#:
022121011B
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.

$293.99

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

$272.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

In-line Thermostat

ES#315286 - 1K0121113A - In-line Thermostat - Ensures proper coolant flow to the automatic transmission oil cooler - Genuine Volkswagen Audi - Volkswagen

Ensures proper coolant flow to the automatic transmission oil cooler

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
315286
Mfg#:
1K0121113A
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.

$72.99

This product was last offered at the strikethrough price on
09-04-2026

$67.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Water Pump

ES#283635 - 078121601B - Auxiliary Water Pump - Used as a after run pump on the V6 engine - Genuine Volkswagen Audi - Audi Volkswagen

Used as a after run pump on the V6 engine

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
283635
Mfg#:
078121601B
Ships in 8 Business 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.

$287.99

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

$267.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Tester

ES#2696212 - V99-1005 - Coolant Tester - Make sure your coolant is safe from freezing! - Vaico - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Make sure your coolant is safe from freezing! We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2696212
Mfg#:
V99-1005
Back Ordered
$51.99

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

$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Hose - Lower

ES#3235770 - 5C0122051A - Radiator Hose - Lower - Lower Radiator return hose - Gates - Volkswagen

Lower Radiator return hose

Brand:
Gates - Corporate Logo
ES#:
3235770
Mfg#:
5C0122051A
Ships in 1 Business Day
$263.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling Hose Retaining Clip - Priced Each

ES#2538001 - 1J0121142 - Cooling Hose Retaining Clip - Priced Each - Secures the radiator hose flange in place. 32mm - Febi - Audi Volkswagen

Secures the radiator hose flange in place. 32mm We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2538001
Mfg#:
1J0121142
In Stock
$2.07 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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