How to remove and install the Coolant Reservoir and Cooling Hose on the BMW 325i?

If a faulty hose is found, drain the cooling system and disconnect the hose by prying up the retaining clip or loosening the hose clamps. Avoid disconnecting while the system is hot. Some models may have twist-on clamps that need to be rotated counterclockwise. Be careful when removing hoses from the radiator, and if a hose is hard to remove, rotate the ends or slit it with a knife. To install a hose, push it over the fitting until the clip locks it. Slide clips onto hoses with traditional clips before positioning. Soften stiff hoses with soapy or hot water if needed. Refill the system and check for leaks. To remove the coolant reservoir, remove the air intake duct, disconnect the hoses, remove the bolts, unclip the reservoir, and lift it. Disconnect the coolant level switch connector and remaining hose before removing the reservoir. Installation is the reverse of removal. Refill the cooling system.

Genuine BMW 325i Cooling Hose

Cooling System Hose

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41 Cooling Hoses found

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BMW 325i 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 BMW 325i | Sedan(E90)
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BMW 325i 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:
- 2006 BMW 325i | Sedan(E90)
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BMW 325i Gasket Ring
Part Number: 07119963201
$0.51 MSRP: $0.66
You Save: $0.15 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: 07-11-9-963-394
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1995 BMW 325i | Convertible(E30), Convertible(E36), Coupe(E30), Sedan(E30), Sedan(E36)
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BMW 325i Upper & Lower Radiator Hoses
Part Number: 17127510952
$86.51 MSRP: $104.65
You Save: $18.14 (18%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Hose; Upper Hose
- Position: Upper Lower
- Replaces: 11-53-4-460-438
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2005 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
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BMW 325i 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 BMW 325i | Sedan(E90)
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BMW 325i Radiator Hose With Temp Sensor
Part Number: 17127531581
$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
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
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BMW 325i Radiator Coolant Hose
Part Number: 17127540020
$67.72 MSRP: $89.68
You Save: $21.96 (25%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Hose, Cooling Module, Low-Temperature
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
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BMW 325i Water Hose Assembly Fit
Part Number: 17127548223
$191.48 MSRP: $225.76
You Save: $34.28 (16%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Line, Heater Return-Thermostat
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
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BMW 325i Hose
Part Number: 17111150232
$12.73 MSRP: $14.88
You Save: $2.15 (15%)
Ships in 1-3 Business Days
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Product Specifications
- Replaces: 17-12-1-103-784, 17-12-1-113-142, 17-12-1-119-294, 17-11-1-152-879
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
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BMW 325i Lower Radiator Coolant Hose
Part Number: 11531436408
$47.27 MSRP: $51.75
You Save: $4.48 (9%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Water Hose; Lower Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2005 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
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BMW 325i Engine Coolant Hose
Part Number: 17117524710
$60.19 MSRP: $79.71
You Save: $19.52 (25%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Radiator-Engine Oil Heat Exchanger; Outlet Hose
- Replaces: 17-11-7-521-067
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
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BMW 325i Heater Return-Thermostat Line
Part Number: 17127548224
$137.34 MSRP: $161.93
You Save: $24.59 (16%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Line, Heater Return-Thermostat
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
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BMW 325i Engine Coolant Hose Expansion Tank To Coolant Pipe
Part Number: 11531436410
$36.03 MSRP: $39.44
You Save: $3.41 (9%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose Return; Water Hose Assembly
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2001-2005 BMW 325i | Sedan M54 Engine(E46), Sedan M56 Engine(E46), Sedan(E46), Wagon M54 Engine(E46), Wagon M56 Engine(E46), Wagon(E46)
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BMW 325i Radiator And Engine Return Hose
Part Number: 64216951946
$47.56 MSRP: $62.98
You Save: $15.42 (25%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose For Radiator And Engine Return; Outlet Hose
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
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BMW 325i Inlet Hose
Part Number: 64211380527
$38.84 MSRP: $46.22
You Save: $7.38 (16%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Feed
- Replaces: 64-21-1-370-806, 64-21-1-374-911
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
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BMW 325i Water Hose
Part Number: 13541719966
$31.29 MSRP: $36.18
You Save: $4.89 (14%)
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:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
View related parts
BMW 325i Engine Coolant Hose
Part Number: 13541719967
$31.58 MSRP: $36.52
You Save: $4.94 (14%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Water Hose
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
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BMW 325i Return Hose
Part Number: 11531722743
$81.13
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose Return; Lower Hose
- Replaces: 11-53-1-719-920
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
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BMW 325i Coolant Hose, Water Pipe
Part Number: 11531718982
$22.08
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Water Hose; Hose
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1987-1992 BMW 325i | Convertible(E30), Coupe(E30), Sedan(E30)
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BMW 325i Radiator Hose Lower
Part Number: 11531726344
$29.99
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Water Hose; Lower Hose
- Position: Lower
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1992-1995 BMW 325i | Convertible(E36), Sedan(E36)

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BMW 325i Cooling Hose

The BMW 325i Cooling Hose connects the moving motor to the fixed radiator with flexible, leak resistant tubing so the engine can remain within its ideal temperature range. Inside every straight-six, there's a constant torque that makes the block shift slightly. The Cooling Hose helps absorb this movement while also performing the duty of taking coolant from the water jackets to the radiator and heater core. Four main Cooling Hose lines, the upper, lower, bypass, and heater route, do the job while designed to withstand heat, pressure, and vibration. Earlier 325i models applied simple molded rubber, whereas later BMW editions often adopted reinforced synthetic materials that resist swelling and cracking for longer, but both types use the same clamps and routing, so owner swaps are easy. If any bulges, hard spots, or coolant stains on any Cooling Hose are observed, they must be replaced. Replacement will prevent leaks that may result in the overheating of the 325i powerhouse. Moreover, overheating may also warp vital engine parts. To ensure that every Cooling Hose continues to protect the engine as the car travels, important activities of visual inspection, timely replacement, and correct clamp tension are undertaken. The efficient functioning of BMW's cooling circuit is therefore ensured.

If you are looking for OEM BMW 325i 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 325i Cooling Hose that come backed by the manufacturer's warranty.

BMW 325i Cooling Hose Parts Questions & Experts Answers

Engine Feed Radiator Upper Hose
17127531579
Q:
How to remove and install the Coolant Reservoir and Cooling Hose on the BMW 325i?
Posted by Nikita R.
A:
If a faulty hose is found, drain the cooling system and disconnect the hose by prying up the retaining clip or loosening the hose clamps. Avoid disconnecting while the system is hot. Some models may have twist-on clamps that need to be rotated counterclockwise. Be careful when removing hoses from the radiator, and if a hose is hard to remove, rotate the ends or slit it with a knife. To install a hose, push it over the fitting until the clip locks it. Slide clips onto hoses with traditional clips before positioning. Soften stiff hoses with soapy or hot water if needed. Refill the system and check for leaks. To remove the coolant reservoir, remove the air intake duct, disconnect the hoses, remove the bolts, unclip the reservoir, and lift it. Disconnect the coolant level switch connector and remaining hose before removing the reservoir. Installation is the reverse of removal. Refill the cooling system.
Answered by BMW Parts Specialist Brad / Feb 28, 2025