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Audi B6 A4 Quattro 1.8T

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Audi B6 A4 Quattro 1.8T Engine Cooling Parts

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Expansion Tank Cap

ES#2598116 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - Calorstat - Audi

Plastic pressure cap for expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Calorstat - Corporate Logo
ES#:
2598116
Mfg#:
8E0121321
Back Ordered
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sensor Retaining Clip - Priced Each

ES#2865558 - 025121142 - Sensor Retaining Clip - Priced Each - Secures the coolant temperature sensor in place - Febi - Audi Volkswagen

Secures the coolant temperature sensor in place affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2865558
Mfg#:
025121142
Ships on Jul 21, 2026
Auto Notify
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#2469 - 037121687 - Sealing O-Ring - Priced Each - Install a new o-ring for a proper seal. 36x3.15 - Victor Reinz - Audi Volkswagen

Install a new o-ring for a proper seal. 36x3.15 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
2469
Mfg#:
037121687
In Stock at Vendor
$3.99

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

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter Adapter Gasket

ES#2550256 - 06A115441J - Oil Filter Adapter Gasket - Seals the oil filter adapter to the engine block - Victor Reinz - Audi Volkswagen

Seals the oil filter adapter to the engine block affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Victor Reinz - Corporate Logo
ES#:
2550256
Mfg#:
06A115441J
Ships in 1 day
ON SALE!
$5.09

This product was last offered at the strikethrough price on
06-25-2026

$4.84 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor - 2 Pin

ES#2813031 - 06A919501A - Coolant Temperature Sensor - 2 Pin - Monitors coolant temperature for fan control & gauge readings - Hamburg Tech - Audi Volkswagen

Monitors coolant temperature for fan control & gauge readings 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#:
2813031
Mfg#:
06A919501A
Ships in 1 Business Day
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor - 2 Pin

ES#2800919 - 06A919501A - Coolant Temperature Sensor - 2 Pin - Monitors coolant temperature for fan control & gauge readings - Meistersatz - Audi Volkswagen

Monitors coolant temperature for fan control & gauge readings affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Meistersatz - Corporate Logo
ES#:
2800919
Mfg#:
06A919501A
Ships in 3 Business Days
$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap - Black

ES#3970169 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Meyle - Audi Volkswagen Porsche

Keep proper pressure in your coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
3970169
Mfg#:
5Q0121321
Ships on Nov 10, 2026
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sensor Retaining Clip - Priced Each

ES#4940095 - 032121142 - Sensor Retaining Clip - Priced Each - Used for ECS 2.0T boost taps - Bremmen Parts - Audi Volkswagen

Used for ECS 2.0T boost taps affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4940095
Mfg#:
032121142
In Stock
ON SALE! SAVE 59%
$1.99

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

$0.81 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sensor Retaining Clip - Priced Each

ES#2586934 - 032121142 - Sensor Retaining Clip - Priced Each - Secures the coolant temperature sensor in place - Rein - Audi Volkswagen

Secures the coolant temperature sensor in place affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2586934
Mfg#:
032121142
Ships in 1 day
ON SALE!
$4.07

This product was last offered at the strikethrough price on
06-29-2026

$3.87 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#2872480 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - Febi - Audi

Plastic pressure cap for expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2872480
Mfg#:
8E0121321
In Stock at Vendor
$11.99

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

$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbo Coolant Hose - Return

ES#2878441 - 058121471B - Turbo Coolant Hose - Return - Connects the turbocharger to the hard water pipe - Vaico - Audi Volkswagen

Connects the turbocharger to the hard water pipe 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#:
2878441
Mfg#:
058121471B
Special Order: No Guaranteed ETA
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Hose

ES#2802313 - 8E0121107G - Expansion Tank Hose - Connects the radiator feed hose to the expansion tank - Rein - Audi

Connects the radiator feed hose to the expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2802313
Mfg#:
8E0121107G
In Stock at Vendor
ON SALE!
$10.99

This product was last offered at the strikethrough price on
06-29-2026

$10.19 USD
Free Shipping
on orders $49 and up

O-RING (36 X 3.15MM)

ES#2800836 - 37121687 - O-RING (36 X 3.15MM) - Meistersatz - Audi Volkswagen

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

Brand:
Meistersatz - Corporate Logo
ES#:
2800836
Mfg#:
37121687
In Stock at Vendor
$4.99 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 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

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

Expansion Tank Cap

ES#3970648 - 8E0121321 - Expansion Tank Cap - Plastic pressure cap for expansion tank - Meyle - Audi

Plastic pressure cap for expansion tank affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
3970648
Mfg#:
8E0121321
Ships on Nov 10, 2026
$9.16 USD
Free Shipping
on orders $49 and up

Oil Cooler Hose - Supply

ES#2575462 - 06B121058S - Oil Cooler Hose - Supply - Connects the oil cooler to the hard water pipe - Meyle - Audi Volkswagen

Connects the oil cooler to the hard water pipe affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
2575462
Mfg#:
06B121058S
Ships on Nov 10, 2026
$8.99 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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