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Audi C5 A6 Quattro 4.2

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Audi C5 A6 Quattro 4.2 Engine Cooling Parts

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Coolant Expansion Tank

ES#2535175 - 8D0121403L - Coolant Expansion Tank - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - URO - Audi Volkswagen

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535175
Mfg#:
8D0121403L
In Stock
$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Water Pump

ES#2562388 - 077121004PXKT - Remanufactured Water Pump - Price includes a $50 core charge - Genuine Volkswagen Audi - Audi Volkswagen

Price includes a $50 core charge

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2562388
Mfg#:
077121004PXKT
Ships in 4 Business Days
$406.99

This product was last offered at the strikethrough price on
02-26-2026

$405.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#261042 - 1J0121321B - Expansion Tank Cap - Keep proper pressure in your coolant system - Genuine Volkswagen Audi - Audi Volkswagen

Keep proper pressure in your coolant system

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
261042
Mfg#:
1J0121321B
Ships in 1-2 days
30% off MSRP

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

$39.59

This product was last offered at the strikethrough price on
06-19-2026

$27.91 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Oil Cooler - 10 Row

ES#2764105 - MM0C10 - Universal Oil Cooler - 10 Row - Serious engine oil cooling for the most demanding engines - Mishimoto - Audi BMW Volkswagen MINI

Serious engine oil cooling for the most demanding engines For custom applications only. Not a direct bolt on.

Brand:
Mishimoto - Corporate Logo
ES#:
2764105
Mfg#:
MM0C10
In Stock
$126.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Plug Kit - Priced Each

ES#2535191 - 357121140 - Coolant Flange Plug Kit - Priced Each - Includes the plug, o-ring and securing clip - URO - Audi Volkswagen

Includes the plug, o-ring and securing clip 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535191
Mfg#:
357121140
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

A/C Condenser Fan

ES#372305 - 4B3959457 - A/C Condenser Fan - 200W - 280MM fan located in front of the AC condenser - Genuine Volkswagen Audi - Audi

200W - 280MM fan located in front of the AC condenser

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
372305
Mfg#:
4B3959457
Ships in 8 Business Days
8% off MSRP

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

$411.99

This product was last offered at the strikethrough price on
07-25-2026

$376.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Water Pump

ES#3183399 - 078121601B - Auxiliary Water Pump - Used as an after run pump on the V6 engine - Rein - Audi Volkswagen

Used as an after run pump on the V6 engine 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3183399
Mfg#:
078121601B
Ships in 3 Business Days
$118.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Screw - Priced Each

ES#471868 - N91090701 - Screw - Priced Each - Install new hardware with your new parts. 5x20 - Genuine Volkswagen Audi - Audi

Install new hardware with your new parts. 5x20 Used to secure the coolant expansion tank

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471868
Mfg#:
N91090701
In Stock
25% off MSRP

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

$3.99

This product was last offered at the strikethrough price on
07-25-2026

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

Coolant Tester

ES#2696212 - V99-1005 - Coolant Tester - Make sure your coolant is safe from freezing! - Vaico - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Make sure your coolant is safe from freezing! We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2696212
Mfg#:
V99-1005
Back Ordered
$51.99

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

$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flush Kit

ES#3420793 - g013a8jm1kt6KT - Coolant Flush Kit - Includes Schwaben coolant refill/air purge tool and 6 liters of G13 coolant. - Assembled By ECS - Audi

Includes Schwaben coolant refill/air purge tool and 6 liters of G13 coolant. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3420793
Mfg#:
G013A8JM1KT6KT
Ships on Sep 1, 2026
Auto Notify
ON SALE!
$180.99

This product was last offered at the strikethrough price on
06-16-2026

$167.41 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Thermostat O-Ring

ES#1848432 - N90136802 - Thermostat O-Ring - Ensure a proper seal when installing your new thermostat - Genuine Volkswagen Audi - Audi Volkswagen

Ensure a proper seal when installing your new thermostat

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1848432
Mfg#:
N90136802
In Stock
10% off MSRP

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

$7.80

This product was last offered at the strikethrough price on
07-25-2026

$7.02 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#2535131 - N90316802 - Sealing O-Ring - Priced Each - Seal for most clip-in cooling sensors/senders. M19.6x3.6mm - URO - Audi Volkswagen

Seal for most clip-in cooling sensors/senders. M19.6x3.6mm 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2535131
Mfg#:
N90316802
In Stock
$1.26 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal 16" Electric Fan - Black

ES#4147300 - 30101516 - Universal 16" Electric Fan - Black - 1469 CFM. High performance puller fan with straight blades. - Spal - Audi BMW MINI

1469 CFM. High performance puller fan with straight blades.

Brand:
Spal - Corporate Logo
ES#:
4147300
Mfg#:
30101516
Ships in 2 Business Days
11% off MSRP

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

$168.99

This product was last offered at the strikethrough price on
07-25-2026

$149.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Spal Electric Fan Harness with Relay

ES#4147343 - FRH - Spal Electric Fan Harness with Relay - Electric Fan Relay - 40 amp, 12V, single pole wiring harness kit - Spal - Audi BMW MINI

Electric Fan Relay - 40 amp, 12V, single pole wiring harness kit

Brand:
Spal - Corporate Logo
ES#:
4147343
Mfg#:
FRH
Back Ordered
12% off MSRP

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

$112.99

This product was last offered at the strikethrough price on
07-25-2026

$99.99 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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