BMW Cooling System Parts & Accessories for BMW E36 (1992-1998) M3

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The cooling system is arguably the weakest point in numerous BMWs. If you drive an aging BMW or plan on taking your car to the track like we do, we recommend beefing up your cooling system before going to the track. Generally, the main components in your cooling system that are prone to failure include the following: expansion tank, factory hoses, water pump, thermostat, fan (especially if your vehicle comes factory with a clutch fan), and radiator. Factory BMW expansion tanks are plastic and prone to either breaking off at connection points or combusting. As factory rubber hoses age they either crack or break over time - we offer silicone cooling hose upgrades for most applications to avoid future failures. If you have an older vehicle, your water pump likely comes from the factory with a plastic impeller - we offer upgraded water pumps with metal impellers that are far more reliable. Newer model BMWs utilize electric water pumps - BMW spent millions of dollars engineering these water pumps, but they fail so often that we recommend replacing at 60,000 mile service intervals to avoid being stranded on the side of the road. In terms of thermostats, we offer various upgraded thermostats for racing applications. If your BMW utilizes a clutch fan from the factory, we have several options available in terms of universal electric fans - we recommend replacing these to avoid sending brittle plastic fan blades through your hood. For radiators, we recommend swapping out your radiator for one that does not use plastic connection points like your factory radiator.

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Rein Radiator Hose - Lower - E36
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:348769
Part#: 11531726344
Ships in 3 Business Days
$ 15.99

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

$ 13.99 USD
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$ 13.99 USD
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Replace your radiator hose before a blown hose leaves you stranded.
Genuine BMW - Corporate Logo
T#:374427
Part#: 17111723520KT2
Ships in 1-2 days
$ 400.99

This product was last offered at the strikethrough price on
08-13-2026

$ 395.99 USD
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$ 395.99 USD
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Hose Clamp 2 5/16" - 3 1/4" - priced each
10X Entries Into Our F80 M3 Sweepstakes
ECS - Corporate Logo
T#:376806
Part#: 54155K23
Ships in 1-2 days
$ 4.99 USD
Free Shipping on orders $49 and up

Hose Clamp 2 5/16" - 3 1/4"

Ensure secure hose connections with the Hose Clamp 2 5/16" - 3 1/4", a versatile and reliable solution for various applications. Crafted from durable materials, this clamp offers superior strength and corrosion resistance. Its adjustable design allows for a snug fit, reducing the risk of leaks and ensuring optimal performance. Upgrade your hose connections with the precision and reliability of the Hose Clamp 2 5/16" - 3 1/4".

  • Versatile and reliable solution for various applications
  • Superior strength and corrosion resistance
  • Adjustable design for a snug fit
  • Reduces risk of leaks for optimal performance
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Genuine BMW - Corporate Logo
T#:55245854
Part#: 1711117XKT
Ships in 1-2 days
New Item
$ 26.92 USD
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This Genuine BMW Lower Radiator Mount and Bracket Refresh Kit supplies the factory-original hardware needed to overhaul your lower radiator supports.

Genuine BMW - Corporate Logo
T#:55245851
Part#: 11XX17KT
Ships in 1-2 days
New Item
$ 25.88 USD
Free Shipping on orders $49 and up
Maintain the factory engineering integrity and peak performance of your ultimate driving machine with this Genuine BMW Intake and Cooling Refresh Kit.
Hella - Corporate Logo
T#:580139
Part#: 9107471
Ships in 3 Business Days
$ 15.99 USD
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$ 15.99 USD
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2 pin

Victor Reinz - Corporate Logo
T#:580584
Part#: C32348
Ships in 4 Business Days
$ 3.99

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

$ 2.99 USD
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$ 2.99 USD
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Hose Clamp - 40mm-60mm
10X Entries Into Our F80 M3 Sweepstakes
Bremmen Parts - Corporate Logo
T#:5227
Part#: 040-60T
Ships in 4 Business Days
$ 3.99 USD
Free Shipping on orders $49 and up
Hose clamps for radiator hoses, coolant hoses, vacuum hoses, or intake hoses. These hose clamps are the same style as your OEM hoses with a smooth inside band to prevent cutting into the hose material.

Features:
  • 9mm band width
  • 6mm hex & slotted head
  • Smooth inside of band = optimal hose protection
  • OEM
  • 430 Stainless steel band and housing with zinc plated steel screw
  • Asymmetric housing = even distribution of forces and prevents tilting of the clamp when tightening
  • Screw support = ease of assembly due to the safe guidance of the emerging band
  • Short housing saddle = even contact pressure = improved efficiency

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    Rein Coolant Hose - E36
    2X Entries Into Our F80 M3 Sweepstakes
    Rein - Corporate Logo
    T#:35875
    Part#: 11531703844
    Ships in 1-2 days
    $ 9.17 USD
    Free Shipping on orders $49 and up
    BMW HOSE F RADIATOR AND ENGINE R

    CTA Tools - Corporate Logo
    T#:641679
    Part#: CTAA195
    In Stock
    $ 9.98 USD
    Free Shipping on orders $49 and up
    Tests all ethylene glycol solutions with radiator hot or cold
    Gates - Corporate Logo
    T#:401921
    Part#: 11531708499
    Ships on Oct 1, 2026
    $ 39.99 USD
    Free Shipping on orders $49 and up
    New upper radiator hose for your BMW
    Bremmen Parts - Corporate Logo
    T#:640149
    Part#: 11521712058
    In Stock
    Sale - Save 22% $ 23.99

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

    $ 18.76 USD
    Free Shipping on orders $49 and up
    Sale - Save 22%
    $ 23.99

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

    $ 18.76 USD
    Free Shipping on orders $49 and up
    This fan is driven by the serpentine belt, engaged by the fan clutch. If you have bad motor mounts, it's quite common for the blades of this fan to make contact with the radiator or radiator shroud, essentially self-destructing the fan into many pieces. Be sure to get a new fan clutch, while you are replacing this.
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    2 Pin Connector
    10X Entries Into Our F80 M3 Sweepstakes
    ECS - Corporate Logo
    T#:33412932
    Part#: 61132359999
    In Stock
    Sale - Save 25% $ 10.99

    This product was last offered at the strikethrough price on
    06-14-2026

    $ 8.24 USD
    Free Shipping on orders $49 and up
    Sale - Save 25%
    $ 10.99

    This product was last offered at the strikethrough price on
    06-14-2026

    $ 8.24 USD
    Free Shipping on orders $49 and up

    Includes connector housing with terminals and seals. Commonly used for the coolant level sensor.

    ECS Tuning replacement harness connectors include all necessary pins and wire seals for a complete harness repair. Whether you have a broken harness connector or need a complete wiring repair, we have the components you need.

    Each connector includes an additional terminal in case one becomes lost or damaged during installation.

    *OEM cross reference PN# 61132359999 - Commonly used for the coolant level sensor.

    Please reference the original part number from the existing connector to confirm fitment, before ordering.

    Suggested tools:

    Suggested crimping pliers: T#387193
    Wire De-pin tools:
    12pc De-Pin Tool Set - T#386379
    23pc De-Pin Tool Set - T#641943

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    Radiator Hose - Lower
    10X Entries Into Our F80 M3 Sweepstakes
    Bremmen Parts - Corporate Logo
    T#:39295543
    Part#: 11531726344
    Ships in 6 Business Days
    Sale - Save 22% $ 22.99

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

    $ 17.94 USD
    Free Shipping on orders $49 and up
    Sale - Save 22%
    $ 22.99

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

    $ 17.94 USD
    Free Shipping on orders $49 and up
    Meyle Heater Hose - E36
    5X Entries Into Our F80 M3 Sweepstakes
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:374249
    Part#: 64211394293
    Ships on Sep 29, 2026
    $ 12.99 USD
    Free Shipping on orders $49 and up
    Engine inlet to heater control valve

    Coolant Temperature Sensor
    5X Entries Into Our F80 M3 Sweepstakes
    We Price Match - Give Us A Call or Chat!
    Meyle - Corporate Logo
    T#:594615
    Part#: 13621703993
    Ships on Sep 29, 2026
    $ 18.99 USD
    Free Shipping on orders $49 and up
    $ 18.99 USD
    Free Shipping on orders $49 and up
    This is the coolant temperature sensor used in many BMW models from the mid-1990s to the mid-2000s. The engine computer relies on the coolant temp to set the fuel mapping for the engine. As the car warms up the computer changes the fuel mixture. If your car is running a bit rich (too much fuel) it could be because this sensor is failing and not sending the correct info to the computer.

    This sensor is located in a variety of places depending on the engine. But it's one of those easy replacement items 'while you're in there' when doing a water pump or thermostat replacement.

    This coolant temp sensor fits the following BMWs:
    1996-1999 E36 BMW 323is 323ic 328i 328is 328ic M3, located in cylinder head
    1999-2003 E39 BMW 540i, located on side of water pump
    1999-2001 E38 BMW 740i 740il, located on side of water pump
    1995-1996 E38 BMW 750il, located on side of water pump
    1990-1999 E31 BMW 850i 850ci, located on side of water pump
    2000-2006 E53 BMW X5 3.0i, located in cylinder head
    2000-2006 E53 BMW X5 4.4i/4.6is/4.8is, located on side of water pump
    1997-2002 Z3 BMW Z3 2.5i Z3 3.0i, located in cylinder head
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    MTC - Corporate Logo
    T#:361005
    Part#: 17111178412
    Back Ordered
    $ 2.03 USD
    Free Shipping on orders $49 and up
    This is the small lower rubber mount that goes on the bottom of the radiator. These mounts sit down into mount 17111723337. Fits left or right side - priced each
    Coolant Hose
    2X Entries Into Our F80 M3 Sweepstakes
    URO - Corporate Logo
    T#:373145
    Part#: 13541735173
    Ships in 1 Business Day
    $ 13.99 USD
    Free Shipping on orders $49 and up
    Cylinder head to thermostat

    Febi Coolant Temperature Sender - E31, E32, E34, E36, E38
    Located in the cylinder head
    We Price Match - Give Us A Call or Chat!
    Febi - Corporate Logo
    T#:382428
    Part#: 12621747281
    Special Order: No Guaranteed ETA
    $ 20.99 USD
    Free Shipping on orders $49 and up
    $ 20.99 USD
    Free Shipping on orders $49 and up
    2 pin
    Coolant Hose
    2X Entries Into Our F80 M3 Sweepstakes
    URO - Corporate Logo
    T#:373146
    Part#: 13541735174
    Back Ordered
    $ 8.99 USD
    Free Shipping on orders $49 and up
    Thermostat to throttle body

    Mishimoto - Corporate Logo
    T#:597382
    Part#: R1841-AT
    Back Ordered
    $ 143.99 USD
    $ 143.99 USD
    This 1988-1998 BMW 3 Series radiator is a direct OEM replacement for your old stock unit. There is no need to bend, cut, or modify anything to ensure proper fitment in your vehicle. This radiator features OEM spec plastic end tanks attached to an aluminum core for stock cooling efficiency. At some point the inevitable happens to original stock radiators. They either spring a leak, get clogged up, or a plastic inlet or outlet cracks due to years of constant clamp pressure. This 1988-1999 BMW 3Series radiator is a perfect replacement to keep your cooling system in top-notch shape, and just like all Mishimoto parts, it comes with the Mishimoto Lifetime Warranty. WARNING! Prop 65 may apply to this product. Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1968) is a California law that applies to call companies selling products in California. Prop 65 requires any listed chemical present above very low levels that are known to cause cancer, birth defects, or other reproductive harm. For more information about California Prop 65 warning see: www.P65Warnings.ca.gov.
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