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Audi A4 Engine Coolant Lines

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Coolant Pipe O-Ring - Priced Each

ES#471191 - N90925001 - Coolant Pipe O-Ring - Priced Each - Provides seal from metal to plastic cooling line end fitting. 17x3 - Genuine Volkswagen Audi - Audi

Provides seal from metal to plastic cooling line end fitting. 17x3

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471191
Mfg#:
N90925001
In Stock
17% off MSRP

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

$5.99

This product was last offered at the strikethrough price on
07-24-2026

$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hard Coolant Pipe

ES#280425 - 06D121071R - Hard Coolant Pipe - Located between the coolant flange and upper radiator hose - Genuine Volkswagen Audi - Audi

Located between the coolant flange and upper radiator hose

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280425
Mfg#:
06D121071R
Ships in 2 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.

$154.99

This product was last offered at the strikethrough price on
07-24-2026

$141.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe - Return

ES#4846042 - 06B121065AC - Coolant Pipe - Return - Main return pipe that connects to the water pump and the heater core - Vaico - Audi

Main return pipe that connects to the water pump and the heater core We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4846042
Mfg#:
06B121065AC
In Stock at Vendor
$94.99

This product was last offered at the strikethrough price on
04-15-2026

$93.99 USD
Free Shipping
on orders $49 and up

Cooling Pipe

ES#4325022 - 078121070CF - Cooling Pipe - With integrated power steering line - Vaico - Audi Volkswagen

With integrated power steering line We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4325022
Mfg#:
078121070CF
In Stock at Vendor
$274.99

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

$266.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Supply Pipe with hose clamps

ES#2806915 - 06B121070HKT - Coolant Supply Pipe with hose clamps - Located along top of the intake manifold - Assembled By ECS - Audi

Located along top of the intake manifold 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2806915
Mfg#:
06B121070HKT
In Stock
ON SALE! SAVE 24%
$99.99

This product was last offered at the strikethrough price on
05-12-2026

$76.45 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe - Return

ES#3697692 - 06E121044AF - Coolant Pipe - Return - Secondary return pipe that connects to the supply pipe and the oil cooler hoses - Vaico - Audi

Secondary return pipe that connects to the supply pipe and the oil cooler hoses We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
3697692
Mfg#:
06E121044AF
In Stock at Vendor
$114.99

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

$111.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Supply Pipe

ES#280015 - 06B121070H - Coolant Supply Pipe - Located along top of the intake manifold - Genuine Volkswagen Audi - Audi

Located along top of the intake manifold

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280015
Mfg#:
06B121070H
Ships in 4 Business Days
9% off MSRP

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

$232.99

This product was last offered at the strikethrough price on
07-24-2026

$212.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe - Return

ES#280013 - 06B121065AB - Coolant Pipe - Return - Main return pipe that routes to the thermostat and the cylinder head flange - Genuine Volkswagen Audi - Audi

Main return pipe that routes to the thermostat and the cylinder head flange

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280013
Mfg#:
06B121065AB
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.

$219.99

This product was last offered at the strikethrough price on
07-24-2026

$201.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Coolant Pipe

ES#5341345 - TTE10524 - Front Coolant Pipe - Connects the left side water pipe elbow to the thermostat hose - The Turbo Engineers - Audi

Connects the left side water pipe elbow to the thermostat hose

Brand:
The Turbo Engineers - Corporate Logo
ES#:
5341345
Mfg#:
TTE10524
Ships on Aug 11, 2026
$69.99 USD
Free Shipping
on orders $49 and up

Coolant Pipe - Return

ES#2772341 - 06E121044AF - Coolant Pipe - Return - Secondary return pipe that connects to the supply pipe and the oil cooler hoses - Genuine Volkswagen Audi - Audi

Secondary return pipe that connects to the supply pipe and the oil cooler hoses

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2772341
Mfg#:
06E121044AF
Ships in 1-2 days
7% off MSRP

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

$138.99

This product was last offered at the strikethrough price on
04-07-2026

$128.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Spring Clamp - Priced Each

ES#470730 - N90770201 - Spring Clamp - Priced Each - Ensure a proper seal on hose connections. 17x12 - Genuine Volkswagen Audi - Audi Volkswagen

Ensure a proper seal on hose connections. 17x12

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470730
Mfg#:
N90770201
In Stock
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

PIPE

ES#3133127 - 06H121085L - PIPE - Genuine Volkswagen Audi - Audi

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3133127
Mfg#:
06H121085L
Ships in 1-2 days
9% off MSRP

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

$110.99

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

$100.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Bleeder Screw - Plastic

ES#472266 - WHT000316 - Bleeder Screw - Plastic - Located in the water pipe - Genuine Volkswagen Audi - Audi

Located in the water pipe From VIN# 8E-4-170 001, split is in 2003 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
472266
Mfg#:
WHT000316
Ships in 2 Business Days
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hard Coolant Pipe

ES#280424 - 06D121065L - Hard Coolant Pipe - Located between main coolant flange hard pipe and thermostat housing - Genuine Volkswagen Audi - Audi

Located between main coolant flange hard pipe and thermostat housing

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
280424
Mfg#:
06D121065L
Ships in 3 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.

$101.99

This product was last offered at the strikethrough price on
07-24-2026

$93.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#4070442 - 058121687 - Sealing O-Ring - Priced Each - Seals the coolant flange to the water supply pipe. 31.5x3.65 - DPH - Audi Volkswagen

Seals the coolant flange to the water supply pipe. 31.5x3.65

Brand:
DPH - Corporate Logo
ES#:
4070442
Mfg#:
058121687
Ships in 6 Business Days
$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

Bleeder Screw - Metal

ES#470119 - N90534203 - Bleeder Screw - Metal - Located in the water pipe - Genuine Volkswagen Audi - Audi

Located in the water pipe Up to VIN# 8E-4-170 000, split is in 2003 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
470119
Mfg#:
N90534203
Ships in 1-2 days
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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