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Volkswagen Jetta IV 1.8T

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Volkswagen Jetta IV 1.8T Engine Coolant Flanges & Parts

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Thermostat Housing

ES#259317 - 06A121121C - Thermostat Housing - Common point of failure for the cooling system. Does not include O-ring. - Genuine Volkswagen Audi - Volkswagen

Common point of failure for the cooling system. Does not include O-ring.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
259317
Mfg#:
06A121121C
In Stock at Vendor
$45.99

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

$43.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange with o-ring

ES#2855444 - 06A121133AH - Coolant Flange with o-ring - Located on the side of the cylinder head - URO - Audi Volkswagen

Located on the side of the cylinder head 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with 5-speed automatic transmission only

Brand:
URO - Corporate Logo
ES#:
2855444
Mfg#:
06A121133AH
Ships in 1 Business Day
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Distribution Pipe

ES#4883856 - 1J0121087A - Water Distribution Pipe - Plastic 3-way oulet at lower radiator hose - Rein - Audi Volkswagen

Plastic 3-way oulet at lower radiator hose 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4883856
Mfg#:
1J0121087A
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Y Flange

ES#4348606 - Aut-mk4-cf2 - Billet Y Flange - Billet Y flange. Eliminate the fail prone plastic flange located by the coolant reservoir. - Autobahn Autoworx - Volkswagen

Billet Y flange. Eliminate the fail prone plastic flange located by the coolant reservoir.

Brand:
Autobahn Autoworx - Corporate Logo
ES#:
4348606
Mfg#:
AUT-MK4-CF2
Special Order: No Guaranteed ETA
$62.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#4070442 - 058121687 - Sealing O-Ring - Priced Each - Seals the coolant flange to the water supply pipe. 31.5x3.65 - DPH - Audi Volkswagen

Seals the coolant flange to the water supply pipe. 31.5x3.65 For vehicles with 5-speed automatic transmissions only

Brand:
DPH - Corporate Logo
ES#:
4070442
Mfg#:
058121687
Ships in 3 Business Days
$3.99

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

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange

ES#2535201 - 06A121132Q - Coolant Flange - Located on the driver side of the cylinder head - URO - Audi Volkswagen

Located on the driver side of the cylinder head 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with 4-speed automatic or manual transmission from production date 09/01/2000 only

Brand:
URO - Corporate Logo
ES#:
2535201
Mfg#:
06A121132Q
In Stock
$3.61 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Plug - Priced Each

ES#333289 - 357121140 - Coolant Flange Plug - Priced Each - Prevent leaks with a new plug - Genuine Volkswagen Audi - Audi Volkswagen

Prevent leaks with a new plug

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
333289
Mfg#:
357121140
In Stock
ON SALE!
$11.99

This product was last offered at the strikethrough price on
06-25-2026

$11.11 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Plug Kit - Priced Each

ES#11965 - 357121140 - Coolant Flange Plug Kit - Priced Each - Includes the plug, o-ring and securing clip - MTC - Audi Volkswagen

Includes the plug, o-ring and securing clip

Brand:
MTC - Corporate Logo
ES#:
11965
Mfg#:
357121140
In Stock
ON SALE!
$3.05

This product was last offered at the strikethrough price on
06-25-2026

$2.90 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

ES#514001 - 038121119B - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat. 50x4 - Victor Reinz - Audi Volkswagen

Ensure a proper seal when installing your new thermostat. 50x4

Brand:
Victor Reinz - Corporate Logo
ES#:
514001
Mfg#:
038121119B
In Stock at Vendor
$2.03 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange

ES#3190061 - 902-879 - Coolant Flange - Located on the driver side of the cylinder head, this pipe contains the coolant tempature sensor - Dorman - Audi Volkswagen

Located on the driver side of the cylinder head, this pipe contains the coolant tempature sensor For vehicles with 4-speed automatic or manual transmission from production date 09/01/2000 only

Brand:
Dorman - Corporate Logo
ES#:
3190061
Mfg#:
902-879
Ships in 4 Business Days
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#277620 - 058121687 - Sealing O-Ring - Priced Each - Seals the coolant flange to the water supply pipe. 31.5x3.65 - Genuine Volkswagen Audi - Audi Volkswagen

Seals the coolant flange to the water supply pipe. 31.5x3.65 For vehicles with 5-speed automatic transmissions only

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
277620
Mfg#:
058121687
Ships in 2 Business 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.

$13.34

This product was last offered at the strikethrough price on
07-06-2026

$11.88 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2228834 - 06A121121C - Thermostat Housing - Common point of failure for the cooling system. Does not include O-ring. - Vaico - Audi Volkswagen

Common point of failure for the cooling system. Does not include O-ring. We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2228834
Mfg#:
06A121121C
In Stock at Vendor
$6.32 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange

ES#1844027 - 06A121132 - Coolant Flange - Located on the driver side of the cylinder head - Meyle - Volkswagen

Located on the driver side of the cylinder head 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with AWD or AWW engine code up to production date 08/31/2000 only

Brand:
Meyle - Corporate Logo
ES#:
1844027
Mfg#:
06A121132
In Stock at Vendor
$9.35 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Sealing O-Ring - Priced Each

ES#2865748 - 037121687 - Coolant Flange Sealing O-Ring - Priced Each - Install a new o-ring for a proper seal. 36x3.15 - Febi - Audi Volkswagen

Install a new o-ring for a proper seal. 36x3.15 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with a 4-speed automatic or manual transmission only

Brand:
Febi - Corporate Logo
ES#:
2865748
Mfg#:
037121687
Ships on Oct 15, 2026
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#3550934 - 037121687 - Sealing O-Ring - Priced Each - Install a new o-ring for a proper seal. 36x3.15 - Elring - Audi Volkswagen

Install a new o-ring for a proper seal. 36x3.15 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with a 4-speed automatic or manual transmission only

Brand:
Elring - Corporate Logo
ES#:
3550934
Mfg#:
037121687
In Stock
$1.01 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange

ES#2813010 - 06A121132Q - Coolant Flange - Located on the driver side of the cylinder head, this pipe contains the coolant tempature sensor - Hamburg Tech - Audi Volkswagen

Located on the driver side of the cylinder head, this pipe contains the coolant tempature sensor We Price Match - Give Us A Call or Chat!
For vehicles with 4-speed automatic or manual transmission from production date 09/01/2000 only

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813010
Mfg#:
06A121132Q
Ships in 1 Business Day
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Coolant Flanges & Parts

Replace a cracked or failed coolant flange with a brand new coolant flange to stop those leaks!

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