Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle

No Vehicle selected
Please select your vehicle below.

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle
Your Vehicle Please tap 'Select' to pick a vehicle
Select

Volkswagen Passat Engine Thermostat Parts

Sort By
Filter By
Return to Top

O-Ring - Priced Each

ES#4197 - N10139201 - O-Ring - Priced Each - O-ring for each side of the plastic bypass pipe under intake. 34.5x3.55 - Rein - Audi Volkswagen

O-ring for each side of the plastic bypass pipe under intake. 34.5x3.55 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4197
Mfg#:
N10139201
Ships in 4 Business Days
ON SALE!
$4.28

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

$4.07 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#280019 - 06B121119B - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat. 50x3.5mm - Genuine Volkswagen Audi - Audi Volkswagen

Ensure a proper seal when installing your new thermostat. 50x3.5mm For vehicles with FSI engines only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280019
Mfg#:
06B121119B
In Stock
3% off MSRP

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

$5.76

This product was last offered at the strikethrough price on
07-23-2026

$5.60 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 80°C

ES#4952533 - 075121113D - Thermostat - 80C - Does not include sealing O-Ring - Bremmen Parts - Audi Volkswagen

Does not include sealing O-Ring 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
4952533
Mfg#:
075121113D
In Stock
ON SALE! SAVE 24%
$14.99

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

$11.42 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#2894918 - 06J121113A - Thermostat - Keep your cooling system efficient with a new thermostat - Vemo - Audi Volkswagen

Keep your cooling system efficient with a new thermostat

Brand:
Vemo - Corporate Logo
ES#:
2894918
Mfg#:
06J121113A
In Stock
ON SALE! SAVE 46%
$54.99

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

$29.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2586885 - 06H121113BKT - Thermostat Replacement Kit - Includes a thermostat, housing, O-ring and bolts - Genuine Volkswagen Audi - Volkswagen

Includes a thermostat, housing, O-ring and bolts For vehicles with CCTA engine code only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2586885
Mfg#:
06H121113BKT
Ships in 1-2 days
$176.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Allen head Bolt (4mm) - Priced Each

ES#2770175 - N10196103 - Allen head Bolt (4mm) - Priced Each - Install new hardware with your new parts. Black oxide coated, M6x18. - ECS - Audi Volkswagen
ECS Tuning recommends this product.

Install new hardware with your new parts. Black oxide coated, M6x18. 10X Entries Into Our F80 M3 Sweepstakes

Used to secure thermostat housing, two required

Brand:
ECS - Corporate Logo
ES#:
2770175
Mfg#:
N10196103
In Stock
ON SALE! SAVE 25%
$1.99

This product was last offered at the strikethrough price on
07-28-2026

$1.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#3618081 - 078121121J - Thermostat Housing - Located on the front right of the engine block - URO - Audi Volkswagen

Located on the front right of the engine block 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
For vehicles with VIN up to 3B-1-049 999 only, split is in the 2001 model year

Brand:
URO - Corporate Logo
ES#:
3618081
Mfg#:
078121121J
Ships in 2 Business Days
$170.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#3139069 - 078121121K - Thermostat Housing - Located on the front right of the engine block - Hudson - Audi Volkswagen

Located on the front right of the engine block For vehicles with VIN from 3B-1-050 001 only, split is in the 2001 model year

Brand:
Hudson - Corporate Logo
ES#:
3139069
Mfg#:
078121121K
Ships in 1-2 days
$84.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#281545 - 06J121113C - Thermostat - Keep your cooling system efficient - Genuine Volkswagen Audi - Volkswagen

Keep your cooling system efficient Also use (Qty.) (1) 06H 121 119 E thermostat o-ring.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281545
Mfg#:
06J121113C
Ships in 3 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.

$178.99

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

$165.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing O-Ring

ES#2394 - 021121119A - Thermostat Housing O-Ring - O-Ring between thermostat housing and cylinder head - Victor Reinz - Audi Volkswagen

O-Ring between thermostat housing and cylinder head

Brand:
Victor Reinz - Corporate Logo
ES#:
2394
Mfg#:
021121119A
In Stock at Vendor
$10.99

This product was last offered at the strikethrough price on
04-28-2026

$4.07 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat

ES#2976393 - 06K121113G - Thermostat - Regulates coolant temperature by controlling flow - Genuine Volkswagen Audi - Volkswagen

Regulates coolant temperature by controlling flow

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2976393
Mfg#:
06K121113G
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.

$153.32

This product was last offered at the strikethrough price on
09-03-2026

$142.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2594504 - 021121117A - Thermostat Housing - Located on the drivers side of the engine, does not include required o-rings - URO - Volkswagen

Located on the drivers side of the engine, does not include required o-rings 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2594504
Mfg#:
021121117A
Ships in 2 Business Days
ON SALE!
$25.99

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

$23.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Replacement Kit

ES#2763367 - 075121113DKT3 - Thermostat Replacement Kit - Includes the parts you'll want to replace while performing a thermostat replacement - Assembled By ECS - Volkswagen

Includes the parts you'll want to replace while performing a thermostat replacement 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
2763367
Mfg#:
075121113DKT3
Ships in 4 Business Days
ON SALE!
$71.99

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

$71.18 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat Housing

ES#2677915 - 021121117A - Thermostat Housing - Located on the drivers side of the engine. O-rings sold separately. - Vaico - Volkswagen

Located on the drivers side of the engine. O-rings sold separately. We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2677915
Mfg#:
021121117A
Ships in 2 Business Days
$48.99

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

$46.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Complete Thermostat Replacement Kit

ES#2580973 - 06B121121LKT1 - Complete Thermostat Replacement Kit - Includes a genuine 87C thermostat, housing, o-ring and stretch bolts - Assembled By ECS - Volkswagen

Includes a genuine 87�C thermostat, housing, o-ring and stretch bolts 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with AUG or AWM engine codes only.

Brand:
Assembled By ECS - Corporate Logo
ES#:
2580973
Mfg#:
06B121121LKT1
In Stock
ON SALE! SAVE 24%
$36.99

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

$28.01 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cast Aluminum Thermostat Housing

ES#3553455 - 462-121-VR37A - Cast Aluminum Thermostat Housing - Replace your inferior plastic housing - iABED Industries - Volkswagen

Replace your inferior plastic housing

Brand:
iABED Industries - Corporate Logo
ES#:
3553455
Mfg#:
462-121-VR37A
Back Ordered
Auto Notify
$139.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Thermostat Parts

Your thermostat helps regulate engine temperatures by allowing the coolant to circulate through the radiator once it opens. If it fails, this might mean it never closes, but worst case, it could mean your coolant doesn't get to the radiator. Stay ahead of cooling issues by replacing your thermostat regularly with an OEM thermostat or quality aftermarket thermostat from our selection.

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.

Terms of Use Privacy Policy ECS Tuning is part of Enthusiast Auto Holdings