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Audi A4 Engine Cooling Parts

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ES#4810572 - 078121113F - Thermostat - 87C - Prevent overheating and premature engine wear - Rein - Audi Volkswagen

Prevent overheating and premature engine wear 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#:
4810572
Mfg#:
078121113F
Ships in 4 Business Days
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4810718 - 06E121044AF - Coolant Pipe - Return - Secondary return pipe that connects to the supply pipe and the oil cooler hoses - Rein - Audi

Secondary return pipe that connects to the supply pipe and the oil cooler hoses 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#:
4810718
Mfg#:
06E121044AF
Ships in 4 Business Days
$50.99 USD
Free Shipping
on orders $49 and up
ES#4809714 - 06E121045R - Cylinder Head Coolant Pipe - Coolant supply pipe for the cylinder heads - Rein - Audi

Coolant supply pipe for the cylinder heads 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#:
4809714
Mfg#:
06E121045R
Ships in 4 Business Days
$167.99 USD
Free Shipping
on orders $49 and up
ES#5341456 - 06H121026DDP - Water Pump Module - Plastic  - Includes the thermostat, temp sensor, and gasket - Rein - Audi Volkswagen

Includes the thermostat, temp sensor, and gasket affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Rein - Corporate Logo
ES#:
5341456
Mfg#:
06H121026DDP
Ships in 4 Business Days
$415.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4152005 - RCW0002 - Ultimate Timing Belt Kit - Complete kit to service your timing belt, water pump, and thermostat - Rein - Audi

Complete kit to service your timing belt, water pump, and thermostat affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Engine codes AEB & ATW

Brand:
Rein - Corporate Logo
ES#:
4152005
Mfg#:
RCW0002
Ships in 4 Business Days
$479.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4151133 - 06B121111K - THERMOSTAT ASSEMBLY 100C - Rein - Audi

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#:
4151133
Mfg#:
06B121111K
Ships in 4 Business Days
$111.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4899607 - N90692901 - Coolant T Connector - Connects to the lower radiator hose - Rein - Audi Volkswagen

Connects to the lower radiator hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Connects lower radiator hose to the coolant expansion tank hose and water pump hose

Brand:
Rein - Corporate Logo
ES#:
4899607
Mfg#:
N90692901
Ships in 4 Business Days
$9.99 USD
Free Shipping
on orders $49 and up
ES#4220573 - 075121113D -  Thermostat - 80C - Does not include sealing O-Ring - Rein - Audi Volkswagen

Does not include sealing O-Ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Lower temperature thermostat, stock is 87°C

Brand:
Rein - Corporate Logo
ES#:
4220573
Mfg#:
075121113D
Ships in 4 Business Days
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4151835 - 8E0121403A - Coolant Expansion Tank - Replace your old coolant tank and stop those pesky leaks - Rein - Audi

Replace your old coolant tank and stop those pesky leaks 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#:
4151835
Mfg#:
8E0121403A
Ships in 4 Business Days
$29.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4809961 - N10470705 - Torx Bolt - Priced Each - Install new hardware with your new parts. M6x50 - Rein - Audi

Install new hardware with your new parts. M6x50 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Used to secure the water pump to the block

Brand:
Rein - Corporate Logo
ES#:
4809961
Mfg#:
N10470705
Ships in 4 Business Days
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4810183 - 8K1819371AB - Heater Core Hose - Return - Connects the heater core to the hard water pipe - Rein - Audi

Connects the heater core 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!
Up to the 2012 model year

Brand:
Rein - Corporate Logo
ES#:
4810183
Mfg#:
8K1819371AB
Ships in 4 Business Days
$108.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2762348 - 059919501KT3 - Coolant Temperature Sensor With O-Ring & Clip - 4 Pin - Blue sensor with square connector. Please check existing sensor color - URO - Audi

<font color='blue'>Blue</font> sensor with square connector. Please check existing sensor color affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2762348
Mfg#:
059919501KT3
Ships in 1 Business Day
$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4872242 - 06C121111E - Thermostat Assembly - Housing included - URO - Audi

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

Brand:
URO - Corporate Logo
ES#:
4872242
Mfg#:
06C121111E
Ships in 1 Business Day
$28.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4039356 - 06D121132C - Coolant Hose Flange  - Located rear engine, this flange houses the temp sensor - Vaico - Audi

Located rear engine, this flange houses the temp sensor 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#:
4039356
Mfg#:
06D121132C
In Stock at Vendor
$21.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2894962 - 078121113G - Thermostat (92 deg. C) - Includes sealing O-Ring - Vemo - Audi Volkswagen

Includes sealing O-Ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
From VIN 8D-X-315001, split is in the 1999 model year

Brand:
Vemo - Corporate Logo
ES#:
2894962
Mfg#:
078121113G
In Stock at Vendor
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4854768 - 1J0819809 - heater valve - Allows coolant flow based upon vacuum applied - Vemo - Audi Volkswagen

Allows coolant flow based upon vacuum applied affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
4854768
Mfg#:
1J0819809
In Stock at Vendor
$79.99

This product was last offered at the strikethrough price on
04-17-2026

$71.99 USD
Free Shipping
on orders $49 and up

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.

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