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BMW E46 M3 Radiator Hoses, Cooling Hoses, & Hose Sets

BMW E46 M3 Radiator Hoses, Cooling Hoses, & Hose Sets Rubber cooling hoses become dry and crack over time which leads to coolant leaks from the ends of the hose. Hoses should be inspected as part of a yearly evaluation of your cooling system. Caring for the rubber will prolong the life of the hose. Our replacement hoses are a direct fit in place of the stock hoses. We also sell OE-type hose clamps that are superior to the auto store generic versions.
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ECS S54 Exact-fit Water Pipe Connecting Line

The ECS Exact-fit water line is a perfect upgrade if you're tired of dealing with brittle failure prone parts under your hood. The reinforced fluorosilicone hose has been pre-formed to route the same way your stock line did so you can maintain that clean factory installed appearance. Upgrading the line fitting with a billet aluminum piece eliminates the failure prone plastic fitting giving your cooling system strength.

Included:

Aluminum fitting

  • Material: 6061-T6 Aluminum - MIL-A-8625F Type II Class 2 black anodized for superior corrosion resistance and strength
  • Single-piece design avoiding additional interfaces that may cause leaks
  • Matches OEM style connection to upper coolant hose

Silicone hose

  • Material: Black Reinforced Fluorosilicone Lined Coolant Safe Silicone
  • Pre-formed hose to ensure OEM style routing and appearance
  • Can maintain the use of your stock retaining clips to route the hose in identical locations (due to slight variations in silicone the retainer on the expansion tank may not fit)
  • Pressure tested to ensure 2X operating pressures to ensure reliability
ECS
Part #: 013178ecs
Price: $91.95 (USD) 
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OEM Febi Auxiliary Fan Switch The auxiliary fan switch activates the auxiliary cooling fan to provide additional cooling under high heat loads, and when the car is stationary.
Febi
Part #: 13621433077
Price: $14.61 (USD) 
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E46 M3 Samco Silicone Hose Set Replace your BMW's ordinary and failure-prone rubber radiator hoses with this set of high performance Samco Sport silicone hoses, the clear first choice for competitive race and aggressive street BMWs. Samco Sport hose kits have been designed as direct replacement to original equipment hoses for use in both motorsport and high performance street / road use. Samco's silicone hose material is able to withstand much higher temperatures and pressures than standard hoses, giving your BMW both high reliability and superior performance under all conditions. These hoses are frequently used in motorsports and forced induction turbo and supercharger setups for their ability to perform under extreme conditions, and are ideal for any BMW where reliability is a must. To ensure absolute quality, Samco only uses premium quality silicone rubber and all of the hoses are hand finished and inspected by race equipment engineers. Choose from multiple color options to personalize your engine compartment.

E46 M3 Samco Silicone Hose Set includes:
upper radiator hose to thermostat (11537830716)
lower radiator hose to thermostat (11537830715)
expansion tank return hose (11537830713)

Fitment note: the silicone hoses replace the rubber hose section of the stock coolant hoses. The plastic connectors on the original hose must be transferred over to the new silicone hose. New hose clamps are recommended.

This item fits the following BMWs:
2001-2006 E46 BMW M3
Samco
Part #: TCS497C
Price: $124.95 (USD) 
Ships on Jul 31, 2018
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OEM Style Hose Clamps 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

    Part NumberDescriptionClamping Range in MMClamping Range in Inches
    008-12T8-12 HOSE CLAMP8mm-12mm5/16"-1/2"
    008-16T8-16 HOSE CLAMP8mm-16mm5/16"-5/8"
    012-20T12-20 HOSE CLAMP12mm-20mm1/2"-3/4"
    016-27T16-27 HOSE CLAMP16mm-27mm5/8"-11/16"
    020-32T20-32 HOSE CLAMP20mm-32mm3/4"-1 1/4"
    025-40T25-40 HOSE CLAMP25mm-40mm1"-1 5/8"
    030-45T30-45 HOSE CLAMP30mm-45mm1 3/16"-1 3/4"
    032-50T32-50 HOSE CLAMP32mm-50mm1 3/8"-2"
    040-60T40-60 HOSE CLAMP40mm-60mm1 5/8"-2 3/8"
    050-70T50-70 HOSE CLAMP50mm-70mm2"-2 3/4"
    060-80T60-80 HOSE CLAMP60mm-80mm2 3/8"-3 1/8"
    070-90T70-90 HOSE CLAMP70mm-90mm2 3/4"-3 1/2"
    080-100T80-100 HOSE CLAMP80mm-100mm3 1/8"-4"
    090-110T90-110 HOSE CLAMP90mm-110mm3 1/2"-4 3/8"
    110-130T110-130 HOSE CLAMP110mm-130mm4 3/8"-5 1/8"
  • Turner Motorsport
    Part #: Hose-Clamps
    Price: $0.57 (USD) 
    $2.19 (Sale - Save 74%)
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    FAE Coolant Temperature Sensor - E46 E39 E82 E9X E60 E63 E38 E65 X3 X5 Z4 This Cooling system temperature sensor mounts into the lower radiator hose.

    This item fits the following BMWs:
    2008+ E82 BMW 128i
    1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
    2006+ E90 BMW 325i 325xi 328i 328xi 328i xDrive 330i 330xi
    2007+ E92 BMW 328i 328xi 328i xDrive
    2007+ E93 BMW 328i
    1999-2003 E39 BMW 525i 528i 530i 540i M5
    2004-2010 E60 BMW 525i 525xi 530i 530xi 545i 550i M5
    2004+ E63 BMW 645ci 650i M6
    1999-2001 E38 BMW 740i 740il 750il
    2002-2008 E65 BMW 745i 745li 750i 750li 760i 760li
    2004-2006 E83 BMW X3 2.5i X3 3.0i
    2000-2006 E53 BMW X5 3.0i X5 4.4i X5 4.6is X5 4.8is
    2007-2013 E70 BMW X5 3.0si X5 4.8i X5 xDrive30i X5 xDrive48i X5M
    2007-2014 E71 BMW X6 xDrive50i X6M
    2003-2008 Z4 BMW Z4 2.5i Z4 3.0i Z4 3.0si Z4 M Roadster M Coupe
    FAE
    Part #: 13621433077
    Price: $19.95 (USD) 
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    OEM Rein Upper Radiator Hose - E46 M3

    Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure. This hose replaces the Upper radiator hose that connects the thermostat housing to the radiator.

    This Upper Radiator Hose fits the following BMWs:
    2001-2006 E46 3 Series M3, M3 Convertible

    Rein
    Part #: 11537830716
    Price: $14.79 (USD) 
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    Expansion Tank Water Pipe / Connecting Hose - E46 M3 This is the Genuine BMW coolant reservoir / expansion tank vent hose for E46 M3 with the S54 engine.

    This item fits the following BMWs:
    2001-2006 E46 BMW M3
    Genuine BMW
    Part #: 17112229053
    Price: $60.72 (USD) 
    $72.05 (16% off MSRP)
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    OEM Rein Lower Radiator Hose - E46 M3

    Replace your cracked or leaking radiator hose to prevent further leaks and potentially catastrophic failure. This hose replaces the lower radiator hose that connects the radiator to the thermostat housing.

    This Lower Radiator Hose fits the following BMWs:
    2001-2006 E46 3 Series M3, M3 Convertible

    Rein
    Part #: 11537830715
    Price: $17.95 (USD) 
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    ECS E46 M3 Silicone Radiator Hose Kit

    Unlike factory rubber hoses, silicone can withstand higher temperatures and pressures with minmal wear. Rubber will wear out and weaken so don't let it bite you when it counts! Silicone has been proven during extreme racing conditions and won't be the weak link that ruins your day.

    This kit is specifically designed for the enthusiast that wants uprated cooling hoses, but also wants to address the heat-cycled plastic connectors and o-rings that are also prone to failure in higher mileage or older vehicles.

    This E46 M3 ECS silicone hose set replaces two hoses - 
    11537830716, upper radiator hose 
    11537830715, lower radiator hose 

    ECS
    Part #: 003631ECS01
    Price: $111.95 (USD) 
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