BMW Coolant & Radiator Hoses for BMW 3 Series E30 (1984-1991)

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We offer replacement hoses from several OE brands that we trust, along with performance silicone upgrades for those who want increased wear resistance compared to factory rubber.
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Race German Coolant Temperature Sender Adapter - M12x1.5
Race German Coolant Temperature Sender Adapter - M12x1.5
Race German - Corporate Logo
T#:6827887
Part#: RGCTSAM12
Ships in 3 Business Days
$ 35.99 USD
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$ 35.99 USD
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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for M12x1.5 sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor
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Race German Coolant Temperature Sender Adapter - 1/8NPT
Race German Coolant Temperature Sender Adapter - 1/8NPT
Race German - Corporate Logo
T#:6827888
Part#: RGCTSA1/8NPT
In Stock
$ 35.99 USD
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$ 35.99 USD
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Race German has devoted themselves to providing quality products for late model BMWs that cover both street and track applications. Race German has now grown their catalog to a wide variety of models and products geared towards keeping your car looking and running nice. For those looking to install an aftermarket coolant temp gauge, Race German has the perfect accessory for you! This adapter is machined out of aluminum and splices into your upper radiator hose. Perfect for use with Race German's E30 temperature gauge but has compatibility with a wire variety of other cars as well! Features: Tapped for 1/8NPT sized sensor 38mm diameter outlets which fit most BMW hoses Includes 2x hose clamps **Does not include temp sensor
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Rein Coolant Bleeder Screw CHW1575 - Priced Each
Rein Coolant Bleeder Screw CHW1575 - Priced Each
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:591955
Part#: 17111712788
In Stock
$ 4.99 USD
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$ 4.99 USD
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Coolant Bleeder Screw is a critical component for maintaining your BMW’s cooling system. Designed to release trapped air from the coolant lines, this screw ensures efficient coolant flow and prevents overheating. Specifically engineered for BMW models, it enhances the overall performance and longevity of your engine by maintaining proper temperature regulation. Comes with O-Ring.
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Rein Expansion Tank Hose - E12, E21, E23, E24, E28, E30, E32, E34
Rein Expansion Tank Hose - E12, E21, E23, E24, E28, E30, E32, E34 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:19431
Part#: 17121712736
In Stock
$ 13.99 USD
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$ 13.99 USD
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VENT HOSE 17121712736 Manufactured by CRP

Water Pump to Thermostat Cooling Hose - E30 E34 E28
Water Pump to Thermostat Cooling Hose - E30 E34 E28
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:6917
Part#: 11531287651
In Stock
$ 10.99 USD
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$ 10.99 USD
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Replace your cracked or leaking coolant hose with this radiator coolant hose that goes from the waterpump to the thermostat on cars with the M20 engine. We recommend inspecting cooling system hoses for dry rot / cracks yearly.

This item fits the following BMWs:
1984-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
1982-1988 E28 BMW 528e
1989-1990 E34 BMW 525i
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Bremmen Coolant Bleeder Screw - BMW E30 E36 E38 E39 E46 E83 E90 Z4
Bremmen Coolant Bleeder Screw - BMW E30 E36 E38 E39 E46 E83 E90 Z4 ...
Bremmen Parts - Corporate Logo
T#:640140
Part#: 17111712788
In Stock
Sale - Save 39% $ 3.99

This product was last offered at the strikethrough price on
05-03-2026

$ 2.44 USD
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Sale - Save 39%
$ 3.99

This product was last offered at the strikethrough price on
05-03-2026

$ 2.44 USD
Free Shipping on orders $49 and up
Add to Wish List
Plastic bleeder screw for cooling system is used to bleed air that would otherwise create an air pocket and lead to overheating. Includes o-ring seal.
Thermostat Housing to Water Pipe Cooling Hose - E30 325e 325i
Thermostat Housing to Water Pipe Cooling Hose - E30 325e 325i ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:19253
Part#: 11531718982
Ships in 3 Business Days
$ 6.55 USD
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$ 6.55 USD
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This is the cooling system water hose that goes from the thermostat housing to the water pipe on E30 3 series.

This item fits the following BMWs:
1988-1991 E30 BMW 325e 325es 325i 325ic 325is 325ix
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OEM Rein Upper Radiator Hose - M42 E30 318i/is
OEM Rein Upper Radiator Hose - M42 E30 318i/is
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:6953
Part#: 11531717622
In Stock at Vendor
$ 11.99 USD
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$ 11.99 USD
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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure. This hose replaces the upper radiator hose that connects from the thermostat housing to the radiator inlet.

OEM Rein radiator hoses are always a perfect option when performing maintenance thanks to their high quality and longevity.

This item fits the following BMWs:
E30 BMW 318i, 318i Convertible, 318is

Fits BMW Engines including:
M42

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Rein Coolant Hose - E28, E30, E34
Rein Coolant Hose - E28, E30, E34
For vehicles with production date from 09/1987
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:379671
Part#: 13541719966
Ships in 2 Business Days
$ 6.11 USD
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$ 6.11 USD
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Thermostat to throttle housing
OEM Rein Coolant Hose - E30
OEM Rein Coolant Hose - E30
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:379799
Part#: 13541719967
In Stock at Vendor
$ 14.06 USD
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$ 14.06 USD
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Fix that leak or replace that old line with this OE replacement!
Rein Lower Heater Hose - E30
Rein Lower Heater Hose - E30
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:379681
Part#: 11531714636
Ships in 2 Business Days
$ 7.99 USD
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$ 7.99 USD
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Heats & cools the throttle body
OEM Rein Lower Radiator Hose - M42 E30 318i/is
OEM Rein Lower Radiator Hose - M42 E30 318i/is
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:6952
Part#: 11531717620
In Stock at Vendor
$ 16.99 USD
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$ 16.99 USD
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Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure. This hose replaces the lower radiator hose that connects from the radiator outlet to the thermostat housing.

OEM Rein radiator hoses are always a perfect option when performing maintenance thanks to their high quality and longevity.

This item fits the following BMWs:
E30 BMW 318i, 318i Convertible, 318is

Fits BMW Engines including:
M42

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OEM Rein Thermostat Coolant Hose - E30 M20
OEM Rein Thermostat Coolant Hose - E30 M20
For vehicles with a production date up to 09/1987
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Rein - Corporate Logo
T#:583586
Part#: 13541289976
Ships in 2 Business Days
$ 8.81 USD
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$ 8.81 USD
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Over time, coolant hoses begin to get brittle and are susceptible to cracking and splitting. Replace your cracked or leaking coolant hose to prevent further leaks and potentially catastrophic failure.

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BMW Mini
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