BMW Radiator Hoses, Cooling Hoses, & Hose Sets for BMW 3 Series E46 (1999-2005)

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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.

ECS E46 M3 Silicone Radiator Hose Kit
ECS - Corporate Logo
T#:378149
Part#: 003631ECS01
In Stock
Sale - Save 15% $119.95
$101.96
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Sale - Save 15% $119.95
$101.96
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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 S54 Exact-fit Water Pipe Connecting Line
ECS - Corporate Logo
T#:393542
Part#: 013178ECS
In Stock
Sale - Save 15% $91.95
$78.16
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Sale - Save 15% $91.95
$78.16
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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
FAE Coolant Temperature Sensor - E46 E39 E82 E9X E60 E63 E38 E65 X3 X5 Z4
FAE - Corporate Logo
T#:2472
Part#: 13621433077
In Stock
$19.95
$19.95
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

OEM Rein Expansion Tank Coolant Hose - E46 3 Series (Not M3)
Rein - Corporate Logo
T#:1873
Part#: 11531436410
In Stock
$17.95
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This hose connects to the expansion tank and the plastic hose # 11537502525 which leads to the engine block.

This expansion tank hose fits the following BMWs:
1999-2000 E46 3 Series Sedan/Wagon - 323i & 328i
1999-2000 E46 3 Series Coupe/Conbertible - 323Ci & 328Ci
2001-2005 E46 3 Series Sedan/Wagon - 325i, 325xi, 330i, 330xi
2001-2006 E46 3 Series Coupe/Convertible - 325Ci, 330Ci

OEM Style Hose Clamps
Turner Motorsport - Corporate Logo
T#:338927
Part#: HOSE-CLAMPS
In Stock
Sale - Save 74% $2.19
Starting at $0.57
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Sale - Save 74% $2.19
Starting at $0.57
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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"
  • OEM Rein Upper Radiator Hose - E46 M3
    Rein - Corporate Logo
    T#:2306
    Part#: 11537830716
    In Stock
    $14.79
    Free Shipping on orders $99 and up

    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


    Genuine BMW Heater Inlet Pipe - E46 E39 E53 E83 E85 Z3
    Genuine BMW - Corporate Logo
    T#:6939
    Part#: 11531705210
    In Stock
    15% off MSRP $37.98
    $32.43
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    15% off MSRP $37.98
    $32.43
    Free Shipping on orders $99 and up
    This is the Genuine BMW plastic heater inlet pipe that connects the cylinder head to the heater inlet on cars with the M52 or M54 engine.The plastic on this hose becomes brittle over time and eventually leads to failure.

    This item fits the following BMWs:
    1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
    1999-2003 E39 BMW 525i 528i 530i
    2004-2006 E83 BMW X3 2.5i X3 3.0i - M54 engine
    2000-2006 E53 BMW X5 3.0i
    1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
    2003-2005 E85 BMW Z4 2.5i Z4 3.0i
    Engine Water Pipe - E39 E46 E85 Z3
    Vaico - Corporate Logo
    T#:12467
    Part#: 11537502525
    In Stock
    $49.43
    Free Shipping on orders $99 and up
    This plastic coolant water pipe connects the expansion tank return hose (On E46 # 11531436410 ) with the engine block.

    This item fits the following BMWs:
    1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
    1999-2003 E39 BMW 525i 528i 530i
    1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
    2003-2006 E85 BMW Z4 2.5i Z4 3.0i

    Expansion Tank Water Pipe / Connecting Hose - E46 M3
    Genuine BMW - Corporate Logo
    T#:12482
    Part#: 17112229053
    In Stock
    13% off MSRP $55.78
    $48.26
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    13% off MSRP $55.78
    $48.26
    Free Shipping on orders $99 and up
    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

    OEM Rein Lower Radiator Hose - E46 M3
    Rein - Corporate Logo
    T#:2674
    Part#: 11537830715
    In Stock
    $17.95
    Free Shipping on orders $99 and up

    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

    Gates Lower Radiator Hose - E46 3 Series (Not M3)
    Packaged by Turner - Corporate Logo
    T#:337992
    Part#: 11531436408
    In Stock
    Starting at $24.95
    Free Shipping on orders $99 and up
    OEM Replacement Lower Radiator Hose for E46 3 series (Not M3). We recommend replacing the Coolant Temperature Sensor while replacing this hose as the original sensor is often damaged while trying to remove it from the old hose.

    This lower radiator hose fits the following BMWs:
    1999-2000 E46 3 Series Sedan/Wagon - 323i & 328i
    1999-2000 E46 3 Series Coupe/Conbertible - 323Ci & 328Ci
    2001-2005 E46 3 Series Sedan/Wagon - 325i, 325xi, 330i, 330xi
    2001-2006 E46 3 Series Coupe/Convertible - 325Ci, 330Ci
    Mishimoto Silicone Radiator Hoses - E46 323/325/328/330
    Mishimoto - Corporate Logo
    T#:388187
    Part#: MMHOSEE46NONM
    In Stock
    Starting at $144.00
    Free Shipping
    Starting at $144.00
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    These high quality silicone hoses feature stock-type quick-disconnect fittings - no need to cut up your old hoses to get the connectors off! 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.

    The pre-attached stock-style plastic quick-disconnect fittings include new O-rings, providing a reliable leak-free seal during installation. We do not recommend re-using the temp sensor located in the lower radiator hose. You can add a new one to your order from the options below.



    Genuine BMW Coolant Bleeder Screw 17111712788
    Genuine BMW - Corporate Logo
    T#:7432
    Part#: 17111712788
    In Stock
    $4.13
    Free Shipping on orders $99 and up

    This is the Genuine BMW Coolant bleeder screw. We recommend a heavy duty Aluminum replacement from ECS Tuning if you do not want to replace this part again when it fails.


    Genuine BMW Vent Screw
    This item fits the following BMW Chassis:
    E36 M3,E46 M3,E85 Z4M,E53 48IS,E30,E34,E36,E38,E39,E46,E53 X5 X5,E83 X3,E85 Z4,E86 Z4,E90

    Febi Freeze Plug - 11111714712
    Febi - Corporate Logo
    T#:6570
    Part#: 11111714712
    In Stock
    $1.59
    Free Shipping on orders $99 and up
    ENGINE COVER LID 11111714712
    OEM Febi Auxiliary Fan Switch
    Febi - Corporate Logo
    T#:340712
    Part#: 13621433077
    In Stock
    $14.90
    Free Shipping on orders $99 and up
    The auxiliary fan switch activates the auxiliary cooling fan to provide additional cooling under high heat loads, and when the car is stationary.

    Uro Premium Aluminum Water Pipe - E46 E53 E83 M54 xDrive
    URO Premium - Corporate Logo
    T#:380523
    Part#: 11537502000
    In Stock
    $49.95
    Free Shipping on orders $99 and up

    The stock plastic water pipe is prone to cracking after a long life of heating and cooling cycles. This could lead to coolant loss and an overheating engine. To prevent this, the URO Premium water pipe is constructed from aluminum that can withstand as many heating and cooling cycles that could ever be thrown at it and won't crack or become brittle over time.

    Fits the following BMWs:
    2000-2005 E46 BMW M54 xi models
    2000-2006 E53 BMW X5 M54 xi/xDrive models
    2004-2006 E83 BMW X3 M54 xi/xDrive models


    E46 M3 Samco Silicone Hose Set
    Samco - Corporate Logo
    T#:338991
    Part#: TCS497C
    Ships in 8 Business Days
    Starting at $124.95
    Free Shipping
    Starting at $124.95
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    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 Silicone Hose Set - E46 323/325/328/330
    Samco - Corporate Logo
    T#:338992
    Part#: TCS529C
    Ships on Dec 31, 2018
    Starting at $144.95
    Free Shipping on orders $99 and up
    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 motorsp