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Audi S5 Cooling Expansion Tank Parts

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ES#4883482 - 8K0121405R - Coolant Expansion Tank - Includes cap - Rein - Audi

Includes cap affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4883482
Mfg#:
8K0121405R
Ships in 1 Business Day
$55.99 USD
Free Shipping
on orders $49 and up
ES#450312 - 8K0129697 - Grommet Cap - Priced Each - Piece that the rubber grommet sits into on the bracket - Genuine Volkswagen Audi - Audi

Piece that the rubber grommet sits into on the bracket affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
450312
Mfg#:
8K0129697
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#470213 - N90570802 - Hex Nut - Priced Each - Install new hardware with your new parts. M6 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. M6 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Used in securing the coolant expansion tank

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470213
Mfg#:
N90570802
In Stock
19% off MSRP

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

$3.55

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

$2.86 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3660806 - 8k0121405qKT - Expansion Tank Replacement Kit - Complete Assembly - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank replacement kit. - Assembled By ECS - Audi

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank replacement kit. 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#:
3660806
Mfg#:
8K0121405QKT
Ships in 5 Business Days
ON SALE!
$83.99

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

$82.61 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4863595 - 4M0121321Q - Coolant Expansion Tank Cap  - Keep proper pressure in your coolant system - Vaico - Audi

Keep proper pressure in your coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4863595
Mfg#:
4M0121321Q
Special Order: No Guaranteed ETA
$39.99 USD
Free Shipping
on orders $49 and up

Includes the heat shield affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5425890
Mfg#:
8K0121405M
In Stock
ON SALE! SAVE 20%
$40.99

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

$32.63 USD
Free Shipping
on orders $49 and up
ES#2598146 - 1H0121687A - Expansion Tank Cap Seal - Seals the expansion tank cap to the reservoir. 28.5x3.8 - Vaico - Audi Volkswagen

Seals the expansion tank cap to the reservoir. 28.5x3.8 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2598146
Mfg#:
1H0121687A
In Stock at Vendor
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2802007 - 1J0121321B - Expansion Tank Cap - Keep proper pressure on your coolant - Rein - Audi Volkswagen Porsche

Keep proper pressure on your coolant affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2802007
Mfg#:
1J0121321B
Ships on Jun 23, 2026
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2815697 - 3B0121321 - Expansion Tank Cap - Keep proper pressure in your coolant system - Hamburg Tech - Audi Volkswagen

Keep proper pressure in your coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2815697
Mfg#:
3B0121321
Ships in 1 Business Day
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Includes integrated coolant level sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rein - Corporate Logo
ES#:
5470754
Mfg#:
8W1121405N
Ships in 3 Business Days
$100.99 USD
Free Shipping
on orders $49 and up
ES#4810244 - 8w1121405n2KT - Expansion Tank Replacement Kit - Genuine Volkswagen Audi - Audi

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4810244
Mfg#:
8W1121405N2KT
Ships in 1-2 days
$225.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
ES#4691027 - 8W1121405NKT - Cooling System Refresh Kit - Level 2 - Replace your thermostat, temp sensor, and expansion tank after performing a proper coolant system flush! - Genuine Volkswagen Audi - Audi

Replace your thermostat, temp sensor, and expansion tank after performing a proper coolant system flush! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4691027
Mfg#:
8W1121405NKT
Ships in 1-2 days
$577.99

This product was last offered at the strikethrough price on
01-07-2026

$564.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement
ES#4810246 - 8W1121405N3KT - Expansion Tank Replacement Kit - Freshen up your engine bay! - Assembled By ECS - Audi

Freshen up your engine bay! 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#:
4810246
Mfg#:
8W1121405N3KT
Ships in 4 Business Days
ON SALE!
$228.99

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

$221.58 USD
Free Shipping
on orders $49 and up
ES#4691355 - 8W1121405N1KT - Cooling System Refresh Kit - Level 2 - Replace your thermostat, temp sensor, and expansion tank after performing a proper coolant system flush! - Assembled By ECS - Audi

Replace your thermostat, temp sensor, and expansion tank after performing a proper coolant system flush! 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#:
4691355
Mfg#:
8W1121405N1KT
Ships in 10 Business Days
$434.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

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.

Let us help you find the parts that fit your Audi

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