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Volkswagen Passat B3 16v Cooling Expansion Tank Parts

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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 2 Business Days
$14.99 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 2 Business Days
$5.99 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 18, 2026
$10.99 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 2 Business Days
$8.15 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 2 Business Days
$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#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 10 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 10 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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