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Audi B9 S4 Quattro 3.0T

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Audi B9 S4 Quattro 3.0T Cooling System Service & Maintenance Parts

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Coolant Expansion Tank

ES#4691036 - 8W1121405N - Coolant Expansion Tank - Includes integrated coolant level sensor - Hudson - Audi

Includes integrated coolant level sensor

Brand:
Hudson - Corporate Logo
ES#:
4691036
Mfg#:
8W1121405N
Ships in 5 Business Days
$198.00 USD
Free Shipping
on orders $49 and up

Meyle Anti-Freeze / Coolant Concentrate - 1.5 Liter (G13)

ES#5443792 - 0140169600 - Meyle Anti-Freeze / Coolant Concentrate - 1.5 Liter (G13) - Lilac OE VW/Audi specification concentrate lifetime coolant. Meets MB 325.5 Specification. - Meyle - Audi Volkswagen Mercedes Benz

Lilac OE VW/Audi specification concentrate lifetime coolant. Meets MB 325.5 Specification. 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Meyle - Corporate Logo
ES#:
5443792
Mfg#:
0140169600
In Stock
$18.99 USD
Free Shipping
on orders $49 and up

Anti-Freeze Tester

ES#3536250 - EZRSP102 - Anti-Freeze Tester - Don't let your engine freeze, be sure with this easy to use tester - E-Z Red Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Don't let your engine freeze, be sure with this easy to use tester

Brand:
E-Z Red Tools - Corporate Logo
ES#:
3536250
Mfg#:
EZRSP102
Ships in 2 Business Days
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

G13 Coolant - 1.5 Liter

ES#2808528 - G013A8JM1 - G13 Coolant - 1.5 Liter - Lilac OE specification lifetime coolant - ROWE - Audi Volkswagen

Lilac OE specification lifetime coolant

Brand:
ROWE - Corporate Logo
ES#:
2808528
Mfg#:
G013A8JM1
Ships in 9 Business Days
$17.99 USD
Free Shipping

Flex Driver For Screw Type Hose Clamps

ES#5027 - ABA TOOL 24 - Flex Driver For Screw Type Hose Clamps - Manufactured by ABA, 24" long - ABA - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Manufactured by ABA, 24" long

Brand:
ABA - Corporate Logo
ES#:
5027
Mfg#:
ABA TOOL 24
In Stock at Vendor
$91.99

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

$88.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump Wrench

ES#2210254 - VAG1590 - Water Pump Wrench - Used for removing 2-piece pulley on V-belt systems - Genuine Volkswagen Audi - Audi Volkswagen

Used for removing 2-piece pulley on V-belt systems

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2210254
Mfg#:
VAG1590
In Stock
$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Anti-Freeze Tester

ES#4337913 - CTAA195 - Anti-Freeze Tester - Tests all ethylene glycol solutions with radiator hot or cold - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Tests all ethylene glycol solutions with radiator hot or cold

Brand:
CTA Tools - Corporate Logo
ES#:
4337913
Mfg#:
CTAA195
Ships on Aug 20, 2026
$9.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

Includes integrated coolant level sensor 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5470754
Mfg#:
8W1121405N
Ships in 4 Business Days
$100.99 USD
Free Shipping
on orders $49 and up

Expansion Tank Replacement Kit

ES#4810244 - 8w1121405n2KT - Expansion Tank Replacement Kit - Genuine Volkswagen Audi - Audi

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4810244
Mfg#:
8W1121405N2KT
Ships in 5 Business Days
$226.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit - Level 2

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!

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4691027
Mfg#:
8W1121405NKT
Ships in 5 Business Days
$565.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Expansion Tank Replacement Kit

ES#4810246 - 8W1121405N3KT - Expansion Tank Replacement Kit - Freshen up your engine bay! - Assembled By ECS - Audi

Freshen up your engine bay! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4810246
Mfg#:
8W1121405N3KT
Ships in 5 Business Days
ON SALE!
$228.99

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

$222.08 USD
Free Shipping
on orders $49 and up

Cooling System Refresh Kit - Level 2

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! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4691355
Mfg#:
8W1121405N1KT
Ships on Aug 19, 2026
$434.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Water Pump - 4 Bolt

New water pump. Does not include pulley We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4780888
Mfg#:
06M121013D
Special Order: No Guaranteed ETA
$244.99 USD
Free Shipping
on orders $49 and up

More About Cooling System Service & Maintenance Parts

From individual cooling system parts to full cooling system refresh kits and cooling system upgrades, we have it all right here so you can keep your engine temperature in check or improve cooling system performance to meet the demands you place on your car.

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

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