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Audi B5 S4 2.7T

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Audi B5 S4 2.7T Engine Cooling Parts

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Sealing O-Ring - Priced Each

Seal for most clip-in cooling sensors/senders. M19.6x3.6mm 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Elring - Corporate Logo
ES#:
5340675
Mfg#:
N90316802
Special Order: No Guaranteed ETA
ON SALE! SAVE 39%
$2.99

This product was last offered at the strikethrough price on
08-14-2026

$1.83 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat O-Ring

Ensure a proper seal when installing your new thermostat 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Elring - Corporate Logo
ES#:
5340689
Mfg#:
N90136802
Special Order: No Guaranteed ETA
ON SALE! SAVE 52%
$1.99

This product was last offered at the strikethrough price on
08-14-2026

$0.96 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87C

Direct OE-quality replacement coolant thermostat to cure overheating issues, resolve engine under-temperature conditions, and restore precise thermal regulation to your V6 engine. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2873481
Mfg#:
078121113FS3
Special Order: No Guaranteed ETA
$15.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

Featuring a metal impeller 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Febi - Corporate Logo
ES#:
5492552
Mfg#:
078121006A
Special Order: No Guaranteed ETA
$69.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 2

ES#2796215 - 078121121KKT1 - Cooling System Refresh Kit - Level 2 - Replace critical cooling system components and perform a proper coolant system flush! - Assembled By ECS - Audi

Replace critical cooling system components and perform a proper coolant system flush! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2796215
Mfg#:
078121121KKT1
Ships on Dec 15, 2026
ON SALE!
$221.31 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Auxiliary Water Pump

ES#2825769 - 078121601B - Auxiliary Water Pump - Used as an after-run pump on the V6 engine - Vemo - Audi Volkswagen

Used as an after-run pump on the V6 engine Replacement water pump for auxiliary water pump relocation

Brand:
Vemo - Corporate Logo
ES#:
2825769
Mfg#:
078121601B
Special Order: No Guaranteed ETA
$112.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Thermal Switch - 2 Pin

ES#2898409 - 357919369F - Thermal Switch - 2 Pin - Located in the coolant pipe that connects to the cylinder head - Vemo - Audi Volkswagen

Located in the coolant pipe that connects to the cylinder head

Brand:
Vemo - Corporate Logo
ES#:
2898409
Mfg#:
357919369F
Special Order: No Guaranteed ETA
$19.99 USD
Free Shipping
on orders $49 and up

Auxiliary Water Pump

Secondary pump for more efficient cooling 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5492052
Mfg#:
078965561
Ships on Jan 18, 2027
Auto Notify
$79.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Radiator Drain Plug

ES#250205 - 8D0121100 - Radiator Drain Plug - Used for quick removal of coolant - Original Equipment Supplier - Audi Volkswagen

Used for quick removal of coolant

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
250205
Mfg#:
8D0121100
Back Ordered
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87C

Prevent overheating and premature engine wear 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4940301
Mfg#:
078121113F
Special Order: No Guaranteed ETA
Auto Notify
ON SALE! SAVE 18%
$16.99

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

$13.86 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Cooling Parts

Optimize your engine cooling system performance and heater output with quality drive belts, coolant hoses, cooling system parts, and approved coolant fluids from ECS Tuning. Head off expensive repairs and untimely breakdowns with regularly scheduled cooling system inspection and maintenance.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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