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Volkswagen Passat Cooling System Service & Maintenance Parts

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Complete Thermostat Replacement Kit

ES#2580969 - 030121121BKT - Complete Thermostat Replacement Kit - Includes a genuine 87C thermostat, housing, o-ring and stretch bolts - Genuine Volkswagen Audi - Volkswagen

Includes a genuine 87�C thermostat, housing, o-ring and stretch bolts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with AEB or ATW engine codes only.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2580969
Mfg#:
030121121BKT
Ships in 1 day
$110.99

This product was last offered at the strikethrough price on
02-24-2026

$106.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 1

ES#2966589 - 5c0122101aaKT - Cooling System Refresh Kit - Level 1 - This entry level kit covers the most common failures in the cooling system - Genuine Volkswagen Audi - Volkswagen

This entry level kit covers the most common failures in the cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2966589
Mfg#:
5C0122101AAKT
Ships in 1 day
$986.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit

ES#4017079 - 03h121117aKT1 - Cooling System Refresh Kit - This coolant refresh kit covers the most common failures in the cooling system on your 3.6L VR6 engine - Genuine Volkswagen Audi - Volkswagen

This coolant refresh kit covers the most common failures in the cooling system on your 3.6L VR6 engine affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with VIN from 3C-7-120 001 only, split is in the 2007 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4017079
Mfg#:
03H121117AKT1
Ships in 1 day
$988.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement Kit

ES#2794833 - 03h121113KT - Thermostat Replacement Kit - Designed to ease installation procedure of thermostat and prevent a re-do - Genuine Volkswagen Audi - Volkswagen

Designed to ease installation procedure of thermostat and prevent a re-do affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2794833
Mfg#:
03H121113KT
Ships in 1 day
$249.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 2

ES#2966595 - 5C0122101AAKT3 - Cooling System Refresh Kit - Level 2 - This comprehensive kit eliminates weak spots in your cooling system - Genuine Volkswagen Audi - Volkswagen

This comprehensive kit eliminates weak spots in your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2966595
Mfg#:
5C0122101AAKT3
Ships in 1 day
$1410.95 USD
This product is lifetime replacement eligible Partial Replacement

Meyle Anti-Freeze / Coolant Concentrate - 1.5 Liter (G13)

Lilac OE VW/Audi specification concentrate lifetime coolant. Meets MB 325.5 Specification. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Meyle - Corporate Logo
ES#:
5443792
Mfg#:
0140169600
Ships in 3 Business Days
$15.99 USD

Cooling System Refresh Kit - Level 1

ES#4265560 - 4b0121055KT - Cooling System Refresh Kit - Level 1 - The most common failure points in your cars cooling system - Genuine Volkswagen Audi - Volkswagen

The most common failure points in your cars cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with AEB or ATW engine codes only, with VIN from 8D-Y-120001, split is in the 2000 model year.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4265560
Mfg#:
4B0121055KT
Ships in 6 Business Days
$477.78

This product was last offered at the strikethrough price on
02-24-2026

$475.02 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 1

ES#4265538 - 038121119BKT - Cooling System Refresh Kit - Level 1 - The most common failure points in your cars cooling system - Genuine Volkswagen Audi - Volkswagen

The most common failure points in your cars cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with AUG or AWM engine codes only.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4265538
Mfg#:
038121119BKT
Ships in 6 Business Days
$554.51

This product was last offered at the strikethrough price on
02-24-2026

$548.13 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Thermostat Replacement Kit

ES#2966380 - B5PSSTDITSTATKT2 - Thermostat Replacement Kit - Includes thermostat with housing, o-ring and mounting hardware - Assembled By ECS - Volkswagen

Includes thermostat with housing, o-ring and mounting hardware affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2966380
Mfg#:
B5PSSTDITSTATKT2
Ships on Jul 7, 2026
Auto Notify
ON SALE! SAVE 41%
$36.99

This product was last offered at the strikethrough price on
12-29-2025

$21.82 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - FSI

ES#2592480 - 1K0121251ABKT1 - Cooling System Refresh Kit - FSI - This comprehensive kit eliminates weak spots in your cooling system - Genuine Volkswagen Audi - Volkswagen

This comprehensive kit eliminates weak spots in your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2592480
Mfg#:
1K0121251ABKT1
Ships on Aug 13, 2026
$901.99 USD
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 2

ES#2587052 - 8D0121251PKT - Cooling System Refresh Kit - Level 2 - This comprehensive kit eliminates weak spots in your cooling system - Assembled By ECS - Volkswagen

This comprehensive kit eliminates weak spots in your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with AEB or ATW engine code with manual transmission only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2587052
Mfg#:
8D0121251PKT
Ships on Oct 28, 2026
ON SALE!
$441.99

This product was last offered at the strikethrough price on
01-03-2026

$405.42 USD
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 2

ES#2587049 - 8D0121251BCKT - Cooling System Refresh Kit - Level 2 - This comprehensive kit eliminates weak spots in your cooling system - Assembled By ECS - Volkswagen

This comprehensive kit eliminates weak spots in your cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with AEB or ATW engine code, automatic transmission with VIN up to 8D-Y-120000 only, split is in the 2000 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2587049
Mfg#:
8D0121251BCKT
Ships on Oct 28, 2026
ON SALE!
$304.99

This product was last offered at the strikethrough price on
06-18-2026

$300.31 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 1

ES#4265561 - 4B0121055KT2 - Cooling System Refresh Kit - Level 1 - The most common failure points in your cars cooling system - Assembled By ECS - Volkswagen

The most common failure points in your cars cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with AEB or ATW engine codes only, with VIN from 8D-Y-120001, split is in the 2000 model year.

Brand:
Assembled By ECS - Corporate Logo
ES#:
4265561
Mfg#:
4B0121055KT2
Ships on Oct 28, 2026
ON SALE!
$154.99

This product was last offered at the strikethrough price on
06-18-2026

$150.73 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 1

ES#4265562 - 4B0121055KT3 - Cooling System Refresh Kit - Level 1 - The most common failure points in your cars cooling system - Assembled By ECS - Volkswagen

The most common failure points in your cars cooling system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with AEB or ATW engine codes only, with VIN up to 8D-Y-120000, split is in the 2000 model year.

Brand:
Assembled By ECS - Corporate Logo
ES#:
4265562
Mfg#:
4B0121055KT3
Ships on Oct 28, 2026
ON SALE!
$153.99

This product was last offered at the strikethrough price on
01-03-2026

$144.70 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

HVAC Heater Control Valve

Heater Control Solenoid Valve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
4783197
Mfg#:
5Q0906457K
Special Order: No Guaranteed ETA
$104.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Cooling System Service & Maintenance Parts

From individual cooling system parts to full cooling system refresh kits and cooling system upgrades, we have it all right here so you can keep your engine temperature in check or improve cooling system performance to meet the demands you place on your car.

Let us help you find the parts that fit your Volkswagen

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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