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Volkswagen Passat B4 TDI Cooling Expansion Tank Parts

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Coolant Expansion Tank

ES#2095898 - 1H0121407A - Coolant Expansion Tank - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - MTC - Volkswagen

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank

Brand:
MTC - Corporate Logo
ES#:
2095898
Mfg#:
1H0121407A
Ships in 9 Business Days
$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#302253 - 1H0121321C - Expansion Tank Cap - Keep proper pressure in your coolant system - Genuine Volkswagen Audi - Volkswagen

Keep proper pressure in your coolant system

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
302253
Mfg#:
1H0121321C
In Stock
ON SALE! SAVE 25%
$48.58

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

$36.44 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2202551 - 1h0121407a - Coolant Expansion Tank - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - URO - Volkswagen

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2202551
Mfg#:
1H0121407A
Ships in 1 Business Day
$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2868448 - 1H0121407A - Coolant Expansion Tank - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - Febi - Volkswagen

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2868448
Mfg#:
1H0121407A
Ships in 2 Business Days
$36.99

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

$31.99 USD
Free Shipping
on orders $49 and up

Expanding Nut - Priced Each

ES#2891455 - 811807577C - Expanding Nut - Priced Each - Install new hardware with your new parts. - Vaico - Audi Volkswagen

Install new hardware with your new parts. We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2891455
Mfg#:
811807577C
In Stock
ON SALE! SAVE 33%
$7.99

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

$5.35 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2753 - 1H0121407A - Coolant Expansion Tank - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - Meyle - Volkswagen

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
2753
Mfg#:
1H0121407A
Ships on Sep 23, 2026
$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#3560023 - 1H0121321C - Expansion Tank Cap - Keep proper pressure in your coolant system - Hamburg Tech - Volkswagen

Keep proper pressure in your coolant system We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
3560023
Mfg#:
1H0121321C
Ships in 1 Business Day
ON SALE! SAVE 10%
$5.99

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

$5.37 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#3970167 - 1H0121321C - Expansion Tank Cap - Keep proper pressure in your coolant system - Meyle - Volkswagen

Keep proper pressure in your coolant system 5X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
3970167
Mfg#:
1H0121321C
Ships on Sep 23, 2026
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2535169 - 1H0121321A - Expansion Tank Cap - Replacement cap for your broken or lost piece - URO - Volkswagen

Replacement cap for your broken or lost piece 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535169
Mfg#:
1H0121321A
Ships in 1 Business Day
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2801726 - 1H0121321C - Expansion Tank Cap - Replacement cap for your broken or lost piece - Rein - Volkswagen

Replacement cap for your broken or lost piece 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2801726
Mfg#:
1H0121321C
Back Ordered
ON SALE!
$7.99

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

$7.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2814240 - 1H0121321A - Expansion Tank Cap - Replacement cap for your broken or lost piece - Hamburg Tech - Volkswagen

Replacement cap for your broken or lost piece We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2814240
Mfg#:
1H0121321A
Ships in 1 Business Day
ON SALE! SAVE 20%
$8.15

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

$6.52 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#3672033 - 3C0121321 - Expansion Tank Cap - Keep proper pressure in your coolant system - Stant - Audi Volkswagen Porsche

Keep proper pressure in your coolant system

Brand:
Stant - Corporate Logo
ES#:
3672033
Mfg#:
3C0121321
Back Ordered
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2090974 - 1H0121321C - Expansion Tank Cap - Keep proper pressure in your coolant system - MTC - Volkswagen

Keep proper pressure in your coolant system

Brand:
MTC - Corporate Logo
ES#:
2090974
Mfg#:
1H0121321C
Ships in 9 Business Days
$3.05 USD
Free Shipping
on orders $49 and up

Expansion Tank Cap

ES#2748888 - 1H0121321A - Expansion Tank Cap - Replacement cap for your broken or lost piece - MTC - Volkswagen

Replacement cap for your broken or lost piece

Brand:
MTC - Corporate Logo
ES#:
2748888
Mfg#:
1H0121321A
Ships in 9 Business Days
$2.99 USD
Free Shipping
on orders $49 and up

More About Cooling Expansion Tank Parts

A common source of overheating problems is a broken or leaking coolant expansion tank. Replace it with an OEM coolant expansion tank or quality aftermarket expansion tank to prevent future woes.

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Manufacturer names and/or part numbers are used only for identification purposes.

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