How to replace a faulty Cooling Hose on BMW Z4?

If the checks reveal a faulty hose, it must be replaced as follows. First drain the cooling system. If the coolant is not due for replacement, it may be re-used if it is collected in a clean container. To disconnect a hose union from a fitting (such as at the radiator), pry up the wire retaining clip and pull the hose union from its fitting. Some hoses are secured to their unions using traditional hose clamps. To disconnect these type hoses, loosen the clamps, then move them along the hose, clear of the relevant inlet/outlet union. Carefully work the hose free. While the hoses can be removed with relative ease when new, or when hot, do not attempt to disconnect any part of the system while it is still hot. Note that the radiator inlet and outlet are fragile; do not use excessive force when attempting to remove the hoses. If a hose proves to be difficult to remove, try to release it by rotating the hose ends before attempting to free it.

Genuine BMW Z4 Cooling Hose

Cooling System Hose

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64 Cooling Hoses found

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BMW Z4 Water Coolant Hose Thermostat To Front
Part Number: 11537545890
$72.50 MSRP: $104.34
You Save: $31.84 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Cylinder Head-Thermostat
- Position: Front
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006-2008 BMW Z4 | Coupe 3.0si(E86), Roadster 3.0i(E85), Roadster 3.0si(E85)
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BMW Z4 Water Hose
Part Number: 11537603514
$56.72 MSRP: $80.29
You Save: $23.57 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Inlet Hose, Outlet Hose, Outlet Pipe
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2016 BMW Z4 | sDrive28i(E89)
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BMW Z4 Engine Feed Radiator Upper Hose
Part Number: 17127531579
$75.25 MSRP: $99.65
You Save: $24.40 (25%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Hose, Engine Feed-Radiator Top; Lower Hose, Upper Hose
- Position: Upper
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2009-2011 BMW Z4 | sDrive30i(E89)
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BMW Z4 Water Hose
Part Number: 11537541992
$72.50 MSRP: $104.34
You Save: $31.84 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Cylinder Head-Thermostat
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2009-2016 BMW Z4 | sDrive35i(E89), sDrive35is(E89)
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BMW Z4 Engine Feed Radiator Upper Hose
Part Number: 17127540127
$75.25 MSRP: $99.65
You Save: $24.40 (25%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Engine Feed-Radiator Top; Lower Hose, Upper Hose
- Position: Upper
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2009-2016 BMW Z4 | sDrive35i(E89), sDrive35is(E89)
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BMW Z4 Radiator Coolant Pipe Hose Compatible
Part Number: 11537521049
$56.72 MSRP: $80.29
You Save: $23.57 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Thermostat-Coolant Pump; Water Hose, Water Pipe
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006-2011 BMW Z4 | Coupe 3.0si(E86), Roadster 3.0i(E85), Roadster 3.0si(E85), sDrive30i(E89)
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BMW Z4 Coolant Return Pipe
Part Number: 11538663517
$105.27 MSRP: $141.73
You Save: $36.46 (26%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Pipe
- Replaced by: 11538853293
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2016 BMW Z4 | sDrive28i(E89)
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BMW Z4 Radiator Lower-Thermostat Hose
Part Number: 17127564478
$75.25 MSRP: $99.65
You Save: $24.40 (25%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Radiator Bottom-Thermostat; Lower Hose, Upper Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2009-2011 BMW Z4 | sDrive30i(E89)
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BMW Z4 Thermostat Water Coolant Hose
Part Number: 11537545665
$56.72 MSRP: $80.29
You Save: $23.57 (30%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Thermostat-Coolant Pump; Connector Hose, Heater Hose, Water Hose
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2009-2016 BMW Z4 | sDrive35i(E89), sDrive35is(E89)
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BMW Z4 Radiator Coolant Hose
Part Number: 17127548203
$60.19 MSRP: $79.71
You Save: $19.52 (25%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Hose, Cooling Module, Low-Temperature; Inlet Hose
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2009-2016 BMW Z4 | sDrive35i(E89), sDrive35is(E89)
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BMW Z4 Engine Coolant Crossover Pipe
Part Number: 17117541143
$48.89 MSRP: $64.74
You Save: $15.85 (25%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Radiator-Engine Oil Heat Exchanger; Coolant Hose, Outlet Hose
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2009-2016 BMW Z4 | sDrive35i(E89), sDrive35is(E89)
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BMW Z4 Radiator Coolant Hose Upper
Part Number: 17127612444
$85.11 MSRP: $114.58
You Save: $29.47 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Coolant Hose; Lower Hose, Upper Hose
- Position: Upper
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2016 BMW Z4 | sDrive28i(E89)
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BMW Z4 Engine Coolant Hose
Part Number: 11537639997
$167.18 MSRP: $215.03
You Save: $47.85 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Feed Line; Inlet Hose, Inlet Pipe
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2016 BMW Z4 | sDrive28i(E89)
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BMW Z4 Line from Coolant Pump-Cylinder
Part Number: 11538650983
$84.27 MSRP: $106.58
You Save: $22.31 (21%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: By-Pass Hose
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2020-2025 BMW Z4 | 6 Cyl 3.0 L GAS, M40i(G29)
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BMW Z4 LINE FROM COOLANT PUMP-CYLIN
Part Number: 11538650984
$109.25 MSRP: $138.17
You Save: $28.92 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: By-Pass Hose, Cooling Pipe, Pipe, Rear Hose
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2019-2025 BMW Z4 | 4 Cyl 2.0 L GAS, sDrive30i(G29)
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BMW Z4 Thermostat-Coolant Pump Hose
Part Number: 11538650981
$76.13 MSRP: $109.57
You Save: $33.44 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Thermostat-Coolant Pum
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2019-2025 BMW Z4 | 4 Cyl 2.0 L GAS, sDrive30i(G29)
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BMW Z4 Refrigerant Pipe
Part Number: 11518482258
$35.11 MSRP: $43.68
You Save: $8.57 (20%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2020-2025 BMW Z4 | 6 Cyl 3.0 L GAS, M40i(G29)
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BMW Z4 Connector
Part Number: 11518482253
$30.46 MSRP: $37.89
You Save: $7.43 (20%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Elbow, Pipe Adapter, Water Outlet
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2019-2025 BMW Z4 | 4 Cyl 2.0 L GAS, sDrive30i(G29)
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BMW Z4 COOLANT LINE, TURBOCHARGER R
Part Number: 11538650087
$84.27 MSRP: $106.58
You Save: $22.31 (21%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2020 BMW Z4 | M40i(G29)
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BMW Z4 Water Hose
Part Number: 11538645479
$72.50 MSRP: $104.34
You Save: $31.84 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Connector Hose, Outlet Pipe
- Replaces: 11-53-7-615-608, 11-53-4-614-609
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2012-2016 BMW Z4 | sDrive28i(E89)

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1-20 of 64 Results

BMW Z4 Cooling Hose

The fluid connection between the moving engine and the fixed radiator is provided by the BMW Z4 Cooling Hose so that coolant can circulate safely, preventing overheating. When the motor twists against its mounts, the rubber tubes absorb the motion. This prevents the stress that would crack a rigid line. By steering coolant through the engine water jackets and back to the radiator, they whisk away heat before damage occurs. Every Cooling Hose is designed to ensure it does not kink along its passageway to guarantee no restrictions occur in the flow. The Z4 hoses fall into four main styles. An upper and lower radiator line carries the bulk flow, a bypass tube allows circulation while the thermostat is shut, and a heater hose sends warm fluid to the cabin core. The locations and temperature ranges are noticeably different. The upper hose carries hot coolant from the engine out. The lower hose carries cooled liquid back into the engine. The bypass connection pipe enables early warm-up circulation. The heater hose version feeds the passenger compartment for comfort. By doing regular visual inspections, BMW drivers can check for swelling, cracking, or hardening of the Cooling Hose. After identifying a worn Cooling Hose, drain the coolant, loosen clamps, clean fittings, and slip a new Cooling Hose over the fitting and tighten evenly. That's how you keep every Z4 engine confidently cool while preserving BMW performance.

If you are looking for OEM BMW Z4 Cooling Hose, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW Z4 Cooling Hose that come backed by the manufacturer's warranty.

BMW Z4 Cooling Hose Parts Questions & Experts Answers

Radiator Hose
17127514404
Q:
How to replace a faulty Cooling Hose on BMW Z4?
Posted by Cory J.
A:
If the checks reveal a faulty hose, it must be replaced as follows. First drain the cooling system. If the coolant is not due for replacement, it may be re-used if it is collected in a clean container. To disconnect a hose union from a fitting (such as at the Radiator), pry up the wire retaining clip and pull the hose union from its fitting. Some hoses are secured to their unions using traditional hose clamps. To disconnect these type hoses, loosen the clamps, then move them along the hose, clear of the relevant inlet/outlet union. Carefully work the hose free. While the hoses can be removed with relative ease when new, or when hot, do not attempt to disconnect any part of the system while it is still hot. Note that the radiator inlet and outlet are fragile; do not use excessive force when attempting to remove the hoses. If a hose proves to be difficult to remove, try to release it by rotating the hose ends before attempting to free it.
Answered by BMW Parts Specialist Noah / Jun 27, 2025