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Volkswagen MK4 Engine Cooling Parts

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Coolant Distribution Pipe

ES#2561843 - 1J0121087B - Coolant Distribution Pipe - Three way connector that attaches directly to the upper radiator hose - Meyle - Audi Volkswagen

Three way connector that attaches directly to the upper radiator hose 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with manual transmission only

Brand:
Meyle - Corporate Logo
ES#:
2561843
Mfg#:
1J0121087B
Ships on Dec 9, 2026
$6.09 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Hose Coupler

ES#2814308 - 1J0122291B - Coolant Hose Coupler - Replace brittle plastic parts. - Hamburg Tech - Volkswagen

Replace brittle plastic parts. We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2814308
Mfg#:
1J0122291B
Ships in 1 Business Day
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing O-Ring

ES#2801137 - 021121119A - Thermostat Housing O-Ring - O-Ring between thermostat housing and cylinder head - Meistersatz - Audi Volkswagen

O-Ring between thermostat housing and cylinder head

Brand:
Meistersatz - Corporate Logo
ES#:
2801137
Mfg#:
021121119A
Ships in 3 Business Days
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Distribution Pipe

ES#2090999 - 1J0121087A - Water Distribution Pipe - Plastic 3-way oulet at lower radiator hose - MTC - Audi Volkswagen

Plastic 3-way oulet at lower radiator hose For vehicles with ALH engine code and automatic transmission only

Brand:
MTC - Corporate Logo
ES#:
2090999
Mfg#:
1J0121087A
Ships in 9 Business Days
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap

ES#3672033 - 3C0121321 - Expansion Tank Cap - Keep proper pressure in your coolant system - Stant - Audi Volkswagen Porsche

Keep proper pressure in your coolant system

Brand:
Stant - Corporate Logo
ES#:
3672033
Mfg#:
3C0121321
Back Ordered
$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Sealing O-Ring - Priced Each

ES#4070443 - 058121687 - Sealing O-Ring - Priced Each - Seals the coolant flange to the water supply pipe. 31.5x3.65 - Rein - Audi Volkswagen

Seals the coolant flange to the water supply pipe. 31.5x3.65 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
For vehicles with automatic transmissions only

Brand:
Rein - Corporate Logo
ES#:
4070443
Mfg#:
058121687
Ships in 1 Business Day
$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

Water Pump O-Ring

ES#2800960 - 06A121119 - Water Pump O-Ring - Ensure a proper seal when installing a new water pump. 53x4mm - Meistersatz - Audi Volkswagen

Ensure a proper seal when installing a new water pump. 53x4mm

Brand:
Meistersatz - Corporate Logo
ES#:
2800960
Mfg#:
06A121119
Ships in 3 Business Days
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

HOLDING CLIP

2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2801984
Mfg#:
32121142
Ships in 3 Business Days
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

seal ring

ES#2865798 - 038117070A - seal ring - Seals the connection between the oil cooler and the filter adapter. 59x5 - Febi - Audi Volkswagen

Seals the connection between the oil cooler and the filter adapter. 59x5 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2865798
Mfg#:
038117070A
Ships on Oct 27, 2026
$4.99 USD
Free Shipping
on orders $49 and up

Freeze Plug - 36mm

ES#2090865 - 059103113 - Freeze Plug - 36mm - Keep your engine block sealed - MTC - Audi Volkswagen

Keep your engine block sealed

Brand:
MTC - Corporate Logo
ES#:
2090865
Mfg#:
059103113
Ships in 9 Business Days
$1.01 USD
Free Shipping
on orders $49 and up

Multipurpose Relay - Priced Each

ES#2771881 - 141951253B - Multipurpose Relay - Priced Each - Replacement 4-pin/40 amp relay - Hamburg Tech - Audi Volkswagen

Replacement 4-pin/40 amp relay We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2771881
Mfg#:
141951253B
Ships in 1 Business Day
$4.03 USD
Free Shipping
on orders $49 and up

Water Pump Gasket

ES#2684965 - 038121119 - Water Pump Gasket - Ensure a proper seal when installing your new water pump. 57x4mm - Victor Reinz - Volkswagen

Ensure a proper seal when installing your new water pump. 57x4mm

Brand:
Victor Reinz - Corporate Logo
ES#:
2684965
Mfg#:
038121119
In Stock at Vendor
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter Adapter Gasket

Seals the oil filter adapter to the engine block

Brand:
Meistersatz - Corporate Logo
ES#:
4150829
Mfg#:
06A115441J
Back Ordered
$3.66 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2090839 - 038121121 - Thermostat Housing - Common point of failure or leaking for the cooling system on your TDI. - MTC - Volkswagen

Common point of failure or leaking for the cooling system on your TDI. For vehicles with ALH engine code only

Brand:
MTC - Corporate Logo
ES#:
2090839
Mfg#:
038121121
Back Ordered
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump O-Ring

ES#4144993 - 06A121119 - Water Pump O-Ring - Ensure a proper seal when installing a new water pump. 53x4mm - Rein - Audi Volkswagen

Ensure a proper seal when installing a new water pump. 53x4mm 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4144993
Mfg#:
06A121119
Back Ordered
$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

Coolant Flange Plug - Priced Each

ES#2815649 - 357121140 - Coolant Flange Plug - Priced Each - Clip and o-ring sold separately - Hamburg Tech - Audi Volkswagen

Clip and o-ring sold separately We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2815649
Mfg#:
357121140
Ships in 1 Business Day
$1.99 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.

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