BMW Coolant & Radiator Hoses for BMW 5 Series E39 (1996-2003)

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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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Transmission Cooler Hose Set - E39 540i 99-03, E38 740i/iL 99-01
Transmission Cooler Hose Set - E39 540i 99-03, E38 740i/iL 99-01 ...
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Packaged by Turner - Corporate Logo
T#:338705
Part#: TMS16592
Ships in 3 Business Days
Sale - Save 5% $ 171.99

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

Starting at $ 163.48 USD
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Sale - Save 5%
$ 171.99

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

Starting at $ 163.48 USD
Free Shipping
Add to Wish List
The oil cooler/heat exchanger for the automatic transmission is one of the most overlooked sections of the 540i and 740i cooling system. The cooler (heat exchanger) is a part of the overall cooling system and uses coolant circulated from the regular cooling system to cool the transmission oil running through this small cooling block. Some of the hoses are shared with the rest of the cooling system as well. The E38/E39 heat exchanger is located along the driver's side frame rail and is accessed from the wheel well. We recommend servicing or cleaning the heat exchanger along with any cooling system overhaul. Or if you're having transmission faults (especially for temperature) you may want to clean the transmission cooler anyway and these hoses will be a nice finishing touch.

Replacing or cleaning the heat exchanger components could lead to better shifting of the automatic as the cooler itself can become clogged. If you're experiencing harder or hesitating shifts, and the internal transmission temperature is rising without being regulated, the components in this system are the likely cause. Staying on top of the cooling needs of the transmission will help prevent a very costly transmission repair in the future. These hoses are easily replaced and you can clean the heat exchanger easily with brake cleaner and some brushes.

Included in this handy package are:
  • 11531711381 - transmission cooling hose from water pump to radiator (with t-connector)
  • 11531711385 - transmission cooling hose from radiator to cooler
  • 11531711384 - transmission cooling hose from cooler to water pump
  • 11537511207 - transmission cooling hose from cooler to chassis
  • hose clamp
  • o-ring


    This hose set fits the following BMWs:
    1999-2003 E39 BMW 540i
    1999-2001 E38 BMW 740i 740il
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    Genuine BMW Water Pipe - E46 E39 Z4 Z3 (M52 M54)
    Genuine BMW Water Pipe - E46 E39 Z4 Z3 (M52 M54)
    Genuine BMW - Corporate Logo
    T#:360688
    Part#: 11537502525
    In Stock
    $ 90.99 USD
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    $ 90.99 USD
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    Replace your cracked/broken coolant pipe with this Genuine BMW pipe to ensure long term reliability and perfect fitment.
    Genuine BMW Upper Radiator Hose - E39 M5
    Genuine BMW Upper Radiator Hose - E39 M5
    Genuine BMW - Corporate Logo
    T#:14567
    Part#: 11531406766
    In Stock
    $ 70.99 USD
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    $ 70.99 USD
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    Replacement upper radiator hose for the E39 M5. This is a Genuine BMW part.

    This item fits the following BMWs:
    1999-2003 E39 BMW M5
    Genuine BMW Lower Radiator Hose - E39 M5
    Genuine BMW Lower Radiator Hose - E39 M5
    Genuine BMW - Corporate Logo
    T#:14568
    Part#: 11531407812
    In Stock
    $ 88.99 USD
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    $ 88.99 USD
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    Replacement lower radiator hose for E39 M5. A Genuine BMW part.

    This item fits the following BMWs:
    1999-2003 E39 BMW M5
    OEM Coolant Return Pipe from Water Pump Hose to Transmission Cooler Thermostat - E39 540i E38 740i
    OEM Coolant Return Pipe from Water Pump Hose to Transmission Cooler T...
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    Rein - Corporate Logo
    T#:6945
    Part#: 11531711384
    In Stock at Vendor
    $ 68.99 USD
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    $ 68.99 USD
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    This is the cooling system return hose that goes from the automatic transmission cooling thermostat to the hose that comes off the lower water pump outlet.1999-2003 E39 BMW 540i
    1999-2001 E38 BMW 740i 740il
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    Genuine BMW Radiator Hose - Lower - E39 525i 528i 530i
    Genuine BMW Radiator Hose - Lower - E39 525i 528i 530i
    For vehicles with production date from 09/1998
    Genuine BMW - Corporate Logo
    T#:360673
    Part#: 11531705224
    In Stock
    Sale - Save 9% $ 55.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 51.19 USD
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    Sale - Save 9%
    $ 55.99

    This product was last offered at the strikethrough price on
    08-26-2026

    $ 51.19 USD
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    URO Premium Aluminum Water Pipe - BMW M52TU M54
    URO Premium Aluminum Water Pipe - BMW M52TU M54
    2X Entries Into Our F80 M3 Sweepstakes
    URO Premium - Corporate Logo
    T#:587659
    Part#: 11537502525PRM
    In Stock
    $ 71.99 USD
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    $ 71.99 USD
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    This plastic coolant water pipe connects the expansion tank return hose with the engine block
    Genuine BMW Heater Return Hose
    Genuine BMW Heater Return Hose
    For vehicles with production date up to 09/1998
    Genuine BMW - Corporate Logo
    T#:22318
    Part#: 11531433059
    Ships in 6 Business Days
    2% off MSRP $ 252.00

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 247.00 USD
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    2% off MSRP
    $ 252.00

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 247.00 USD
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    Genuine BMW Heater Return Pipe -
    This item fits the following BMW Chassis:
    E36,E39

    Fits BMW Engines including:
    M52,S52

    Genuine BMW Coolant Crossover Pipe
    Genuine BMW Coolant Crossover Pipe
    For vehicles with a production date from 09/1998
    Genuine BMW - Corporate Logo
    T#:35866
    Part#: 11531437493
    Ships in 6 Business Days
    3% off MSRP $ 358.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 347.99 USD
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    3% off MSRP
    $ 358.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 347.99 USD
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    Genuine BMW Cooling System Accumulator -
    This item fits the following BMW Chassis:
    E38,E39,E53 X5

    Fits BMW Engines including:
    M62

    Genuine BMW Water Pipe - E38 740i 740iL E39 540i
    Genuine BMW Water Pipe - E38 740i 740iL E39 540i
    For vehicles with automatic transmission and a production date from 09/1998
    Genuine BMW - Corporate Logo
    T#:367678
    Part#: 11531711384
    In Stock
    Sale - Save 8% $ 82.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 76.40 USD
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    Sale - Save 8%
    $ 82.99

    This product was last offered at the strikethrough price on
    08-26-2026

    $ 76.40 USD
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    Genuine BMW Coolant Transfer Pipe
    Genuine BMW Coolant Transfer Pipe
    Genuine BMW - Corporate Logo
    T#:35937
    Part#: 11531741202
    Special Order: No Guaranteed ETA
    6% off MSRP $ 100.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 94.99 USD
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    6% off MSRP
    $ 100.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 94.99 USD
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    Genuine BMW Pipe -
    This item fits the following BMW Chassis:
    E38,E39,E53 X5

    Fits BMW Engines including:
    M62

    Genuine BMW Heater Hose - E39 540i
    Genuine BMW Heater Hose - E39 540i
    Genuine BMW - Corporate Logo
    T#:368730
    Part#: 64218391013
    Ships in 4 Business Days
    2% off MSRP $ 88.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 86.99 USD
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    2% off MSRP
    $ 88.99

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 86.99 USD
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