BMW Coolant & Radiator Hoses for BMW Z3 (1996-2002)

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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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OEM Style Hose Clamps
10X Entries Into Our F80 M3 Sweepstakes
Turner Motorsport - Corporate Logo
T#:338927
Part#: HOSE-CLAMPS
In Stock
Sale - Save 3% $ 3.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 3.87 USD
Free Shipping on orders $49 and up
Sale - Save 3%
$ 3.99

This product was last offered at the strikethrough price on
06-13-2026

Starting at $ 3.87 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.
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Bav Auto Heater Inlet Pipe - E46 E39 E53 E83 E85 Z3
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:638080
Part#: 11531705210
In Stock
Sale - Save 20% $ 40.99

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

$ 32.79 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 40.99

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

$ 32.79 USD
Free Shipping on orders $49 and up
This is the 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. Replace yours with a brand new Bav Auto Heater inlet pipe to prevent catastrophic failure.
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Bavarian Autosport Water Pipe - E46 E39 Z4 Z3 (M52TU, M54)
10X Entries Into Our F80 M3 Sweepstakes
Bavarian Autosport - Corporate Logo
T#:638085
Part#: 11537502525
In Stock
Sale - Save 20% $ 50.99

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

$ 40.79 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 50.99

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

$ 40.79 USD
Free Shipping on orders $49 and up

This plastic water pipe is positioned directly underneath your intake manifold. Due to its plastic construction, it is notorious for catastrophic failure. Rapid cooling loss and overheating are both direct results of this failure, posing permanent and lasting damage to the engine.

Replace your cracked/broken coolant pipe with this high-quality Bavarian Autosport component to ensure long-term reliability and perfect fitment.

From 1974 to 2019, Bavarian Autosport was one of the premier vendors for BMW and MINI auto parts. We are happy to preserve the Bav Auto legacy by continuing to carry their high-quality products into the future. All Bav Auto parts will remain unchanged in design and sourced from the same OEM suppliers to ensure long-lasting reliability. We trust these parts, accessories, and upgrades so confidently that we back every Bavarian Autosport branded component with a 2-year warranty.

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Genuine BMW - Corporate Logo
T#:6939
Part#: 11531705210
In Stock
1% off MSRP $ 66.71

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

$ 66.01 USD
Free Shipping on orders $49 and up
1% off MSRP
$ 66.71

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

$ 66.01 USD
Free Shipping on orders $49 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
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Genuine BMW - Corporate Logo
T#:6936
Part#: 11531436122
In Stock
$ 55.99 USD
Free Shipping on orders $49 and up
This is the engine coolant hose that goes from the coolant reservoir / expansion tank to the top of the radiator. When replacing any cooling component it is a good idea to check all radiator hoses and replace as necessary.

This item fits the following BMWs:
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
2001-2002 Z3 BMW Z3 M Roadster M Coupe
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Heater Inlet Pipe
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:594330
Part#: 11531705210
In Stock
$ 42.39 USD
Free Shipping on orders $49 and up
This is the 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.
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Rein Radiator Hose - Upper - Z3
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:363438
Part#: 11531716641
In Stock
$ 29.99 USD
Free Shipping on orders $49 and up
Connects the radiator to the water pump
BMW M52 M54 Water Pipe
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:594294
Part#: 11537502525
In Stock
$ 55.99 USD
Free Shipping on orders $49 and up

BMW M52 M54 Water Pipe is an essential replacement part designed to ensure long-term reliability and optimal performance for your BMW's cooling system. Engineered to replace cracked or broken coolant pipes, this high-quality water pipe from Turner Motorsport guarantees a perfect fit and dependable service. Investing in this replacement pipe helps prevent overheating and potential engine damage, maintaining your vehicle's performance and longevity.

  • Reliable replacement: Designed to replace cracked or broken coolant pipes for improved engine cooling.
  • Optimal fitment: Engineered to ensure a perfect fit and seamless installation.
  • Durable construction: Built with high-quality materials to withstand engine temperatures and environmental conditions.
  • Preventative maintenance: Helps avoid overheating and potential engine damage by ensuring a reliable coolant flow.
  • Vehicle compatibility: Specifically designed for BMW M52 and M54 engine models.

Upgrade your BMW’s cooling system with the BMW M52 M54 Water Pipe from Turner Motorsport for enhanced reliability and performance.

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Rein Radiator Hose - Lower - Z3
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:363452
Part#: 11531716642
In Stock
$ 39.99

This product was last offered at the strikethrough price on
05-04-2026

$ 28.99 USD
Free Shipping on orders $49 and up
$ 28.99 USD
Free Shipping on orders $49 and up
A common source of cooling system failure

Genuine BMW Overflow Bottle Hose - Bottom
For vehicles with production date up to 1998
Genuine BMW - Corporate Logo
T#:367695
Part#: 11531740649
In Stock
$ 34.99 USD
Free Shipping on orders $49 and up
$ 34.99 USD
Free Shipping on orders $49 and up
Genuine BMW - Corporate Logo
T#:19209
Part#: 11531716641
Ships in 1-2 days
2% off MSRP $ 45.99

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

$ 44.99 USD
Free Shipping on orders $49 and up
2% off MSRP
$ 45.99

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

$ 44.99 USD
Free Shipping on orders $49 and up
This is the upper radiator hose that goes from the thermostat the the upper left of the radiator.

This item fits the following BMWs:
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
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Genuine BMW - Corporate Logo
T#:19198
Part#: 11531436988
Ships in 1-2 days
$ 34.99 USD
Free Shipping on orders $49 and up
This is the cooling hose from the lower radiator to the thermostat housing for Z3.

This item fits the following BMWs:
1996-1998 Z3 BMW Z3 2.8
1996-2000 Z3 BMW M Roadster M Coupe (S52)
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Genuine BMW - Corporate Logo
T#:19210
Part#: 11531716642
In Stock
2% off MSRP $ 44.99

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

$ 43.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
2% off MSRP
$ 44.99

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

$ 43.99 USD
Limited Qty Sale
Free Shipping on orders $49 and up
This is a replacement Lower Radiator Hose for Z3. This hose goes from the thermostat housing to the lower right side of the radiator. When replacing any cooling component it is a good idea to check all radiator hoses and replace as necessary.

This item fits the following BMWs:
1999-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i
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Genuine BMW - Corporate Logo
T#:367831
Part#: 13541703945
Ships in 1-2 days
3% off MSRP $ 34.99

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

$ 33.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 34.99

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

$ 33.99 USD
Free Shipping on orders $49 and up


Rein Water Hose - Z3
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:363333
Part#: 11531436988
Ships in 1 Business Day
$ 22.99 USD
Free Shipping on orders $49 and up
Serves as a supply line to the radiator
Genuine BMW - Corporate Logo
T#:13001
Part#: 11531401726
In Stock
$ 28.99 USD
Free Shipping on orders $49 and up
GENUINE BMW WATER HOSE:115050
Fits BMW Engines including:
S54


Genuine BMW - Corporate Logo
T#:6950
Part#: 11531714738
Ships in 1-2 days
4% off MSRP $ 25.99

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

$ 24.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 25.99

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

$ 24.99 USD
Free Shipping on orders $49 and up


Genuine BMW Connector -
This item fits the following BMW Chassis:
E30,E36

Fits BMW Engines including:
M42,M44

Genuine BMW - Corporate Logo
T#:6874
Part#: 11531247398
Ships in 1-2 days
$ 28.99 USD
Free Shipping on orders $49 and up


Genuine BMW Water Hose -
This item fits the following BMW Chassis:
E36

Fits BMW Engines including:
M44


Rein Coolant Hose - Water Valve - Z3
For vehicles with a production date up to 09/1998
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:379696
Part#: 64218400295
Back Ordered
$ 27.99 USD
Free Shipping on orders $49 and up
$ 27.99 USD
Free Shipping on orders $49 and up
Return hose for the underhood coolant valve

OEM Rein Cooling Hose - E36, Z3
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:362532
Part#: 13541703865
Ships in 3 Business Days
$ 20.99 USD
Free Shipping on orders $49 and up
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.
Rein Heater Hose - Supply - Z3
For vehicles with a production date up to 09/1998
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:379690
Part#: 64218401809
Ships in 3 Business Days
$ 22.99 USD
Free Shipping on orders $49 and up
$ 22.99 USD
Free Shipping on orders $49 and up
Supplies the heater core with coolant


Genuine BMW - Corporate Logo
T#:25093
Part#: 11537831026
Ships in 1-2 days
$ 34.99 USD
Free Shipping on orders $49 and up
Genuine BMW WATER HOSE
Fits BMW Engines including:
S54

Genuine BMW - Corporate Logo
T#:6972
Part#: 11531743295
Ships in 1-2 days
$ 34.99 USD
Free Shipping on orders $49 and up


Genuine BMW Water Hose -
This item fits the following BMW Chassis:
E36

Fits BMW Engines including:
M42,M44


Genuine BMW - Corporate Logo
T#:36152
Part#: 11537830994
Ships in 1-2 days
$ 28.99 USD
Free Shipping on orders $49 and up
This is the rubber cooling hose that goes from the coolant expansion tank to the water pipe that leads back to the thermostat housing.

This item fits the following BMWs:
2001-2002 Z3 BMW Z3 M Roadster M Coupe with S54 engine
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Rein Coolant Bleeder Screw CHW1575 - Priced Each
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:591955
Part#: 17111712788
In Stock
$ 4.99 USD
Free Shipping on orders $49 and up
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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Genuine BMW - Corporate Logo
T#:6865
Part#: 11511739691
Ships in 1-2 days
$ 7.99 USD
Free Shipping on orders $49 and up


Genuine BMW O-Ring - 26,5X2,5
This item fits the following BMW Chassis:
E36

Fits BMW Engines including:
M44


Genuine BMW - Corporate Logo
T#:7432
Part#: 17111712788
In Stock
$ 5.94 USD
Free Shipping on orders $49 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
 

 

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Rein - Corporate Logo
T#:14593
Part#: 11531740649
In Stock
$ 30.99

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

$ 18.99 USD
Free Shipping on orders $49 and up
$ 18.99 USD
Free Shipping on orders $49 and up
This is the radiator expansion tank return hose for the cooling system on E36 models with the M52 or S52 engine. This hose goes from the expansion tank to the main coolant return pipe.

This item fits the following BMWs:
1996-1998 E36 BMW 323is 323ic 328i 328is 328ic M3
1996-1998 Z3 BMW Z3 2.8
1998-2000 Z3 BMW M Roadster M Coupe
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Rein Radiator Hose - Upper - E36, Z3
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:6973
Part#: 11531743535
In Stock
$ 16.99 USD
Free Shipping on orders $49 and up
OEM BMW ENGINE WATER HOSE 11531743535.--

This item fits the following BMWs:
BMW 3 Series - 318i, 318i Convertible, 318is, 318ti
BMW Z Series - Z3 1.9

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Genuine BMW - Corporate Logo
T#:6533
Part#: 07129952104
In Stock
$ 3.99 USD
Free Shipping on orders $49 and up
GENUINE BMW HOSE CLAMP 07129952104
Expansion Tank Hose
For vehicles with production date up to 09/1998
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:375751
Part#: 17111723521
Ships in 1 Business Day
$ 16.99 USD
Free Shipping on orders $49 and up
$ 16.99 USD
Free Shipping on orders $49 and up
Connects the expansion tank to the radiator
OEM Rein Upper Radiator Hose - E36 325/328/323/M3
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:1299
Part#: 11531708499
In Stock
$ 12.99 USD
Free Shipping on orders $49 and up
This is the coolant hose that connects the upper radiator outlet to the thermostat housing. Any time you are into the cooling system, either for a radiator, water pump, thermostat, etc, you should consider installing fresh new hoses as a preventative measure.

This item fits the following BMWs:
1992-1998 E36 BMW 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
1997-1998 Z3 BMW Z3 2.8
1998-2000 Z3 BMW M Roadster M Coupe with S52 engine
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Rein - Throttle Body Hose - E36 318i, Z3 1.9
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:33980410
Part#: 11531247398
Ships in 1 Business Day
$ 6.83 USD
Free Shipping on orders $49 and up

Throttle Body Hose by Rein is a key component designed to optimize airflow to your BMW’s engine, ensuring enhanced throttle response and overall engine performance. This hose connects the air intake system to the throttle body, delivering a precise flow of air that improves fuel efficiency and engine power. Manufactured from high-quality, heat-resistant materials, the Throttle Body Hose by Rein is built to withstand extreme temperatures and pressures, making it a durable and long-lasting solution for your BMW. Available at Turner Motorsport, this hose is a direct fit replacement, ensuring easy installation and perfect compatibility with OEM standards.

  • Optimizes airflow to the throttle body, improving engine performance and efficiency
  • Enhances throttle response, contributing to smoother acceleration
  • Constructed from durable, heat-resistant materials, ensuring long-lasting performance
  • Direct fit replacement, allowing for easy installation and OEM compatibility
  • Boosts overall engine efficiency, improving fuel economy and engine power

Turner Motorsport offers the Throttle Body Hose by Rein as a reliable solution to maintain your BMW’s air intake system, ensuring smooth and efficient engine operation.

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OEM Rein Coolant Hose - E36 Z3
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:379763
Part#: 11531743295
In Stock at Vendor
$ 13.99 USD
Free Shipping on orders $49 and up
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.
OEM Rein Lower Radiator Hose - E36, Z3 M44 1.9L
2X Entries Into Our F80 M3 Sweepstakes
Rein - Corporate Logo
T#:6873
Part#: 11531247261
Ships in 1 Business Day
$ 10.99 USD
Free Shipping on orders $49 and up

Connects the thermostat to the lower radiator. 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.

This item fits the following BMWs:
BMW 3 Series - 318i, 318i Convertible, 318is, 318ti
BMW Z Series - Z3 1.9

​Fits BMW Engines including:
M44

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Genuine BMW - Corporate Logo
T#:55281750
Part#: 1722OCLKT
Ships in 1-2 days
New Item
$ 20.60 USD
Free Shipping on orders $49 and up
This Genuine BMW Oil Cooler Line O-Ring & Screw Kit includes the exact factory components required to safely service your oil cooler hard lines.