How to inspect and replace brake hoses and Brake Line on BMW 325i?

About every six months, inspect the flexible hoses that connect the steel brake lines with the front and rear brake assemblies for cracks, chafing, leaks, blisters, and other damage. Use a light and mirror for a thorough check. If any defects are found, replace the hose with a new one. Clean dirt away from the hose ends. To remove a brake hose, unscrew the tube nut with a flare-nut wrench and remove the bolt(s) or clip(s) securing the hose to the body. Disconnect the hose from the caliper, discarding the sealing washers. Attach the new hose to the caliper using new sealing washers and tighten the banjo fitting bolt. Install the hose, ensuring it isn't twisted, and check for contact with suspension or steering components. Bleed the brake system and test the brakes before normal operation. When replacing brake lines, use the correct steel parts and avoid using copper tubing. Prefabricated brake lines with flared tube ends and fittings can be bent to the proper shapes using a tubing bender. Ensure the new line is well supported and has clearance from moving or hot components. After installation, check the master cylinder fluid level, add fluid if necessary, bleed the brake system, and test the brakes before normal operation.

Genuine BMW 325i Brake Line

Brake Hose

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11 Brake Lines found

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BMW 325i Brake Hose Rear
Part Number: 34306792253
$29.49 MSRP: $55.02
You Save: $25.53 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Brake Hose, Flex Hose
- Position: Rear
- Replaces: 34-30-6-789-431, 34-30-6-768-851
- 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 Brake Hose
Part Number: 34321159890
$79.18 MSRP: $91.56
You Save: $12.38 (14%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Flex Hose
- Replaces: 34-32-1-154-904
- 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 Brake Hose Rear
Part Number: 34321159524
$79.18 MSRP: $91.56
You Save: $12.38 (14%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Flex Hose
- Position: Rear
- 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 Brake Hose Rear
Part Number: 34321159881
$84.44 MSRP: $97.65
You Save: $13.21 (14%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Brake Hose, Flex Hose, Hose
- Position: Rear
- Replaces: 34-32-1-153-107, 34-32-1-108-134
- 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)
View related parts
BMW 325i Brake Hose Rear
Part Number: 34321159878
$79.18 MSRP: $91.56
You Save: $12.38 (14%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Flex Hose, Hose
- Position: Rear
- Replaces: 34-32-1-113-183, 34-32-1-108-135
- 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 Brake Hose Front
Part Number: 34306790550
$42.14 MSRP: $78.64
You Save: $36.50 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Brake Hose, Flex Hose
- Position: Front
- Replaces: 34-30-6-771-720
- 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 Brake Hose Rear
Part Number: 34306798523
$29.49 MSRP: $55.02
You Save: $25.53 (47%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Flex Hose
- Position: Rear
- Replaces: 34-30-6-762-838, 34-30-6-789-433
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
View related parts
BMW 325i Brake Hose Front
Part Number: 34326766966
$79.18 MSRP: $91.56
You Save: $12.38 (14%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Brake Hose, Flex Hose
- Position: Front
- Replaces: 34-32-1-165-587
- 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 Brake Hose Front
Part Number: 34306767458
$72.07 MSRP: $136.73
You Save: $64.66 (48%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Position: Front
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2006 BMW 325i | Sedan(E90)
View related parts
BMW 325i Brake Hose Rear
Part Number: 34301165174
$47.84 MSRP: $56.93
You Save: $9.09 (16%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Brake Hose, Flex Hose
- Position: Rear
- 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)
- 1992-1995 BMW 325i | Convertible(E36), Sedan(E36)
View related parts
BMW 325i Brake Hose Front
Part Number: 34321159717
$79.18 MSRP: $91.56
You Save: $12.38 (14%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Brake Hose, Flex Hose
- Position: Front
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 1992-1995 BMW 325i | Convertible(E36), Sedan(E36)

BMW 325i Brake Line

The BMW 325i Brake Line is the key connection between a press of the brake pedal and the hydraulic force that secures pads against rotors on the brake pad to give drivers reliable stopping power. In every BMW 325i, metal tubing exits the master cylinder, snakes along the chassis, then connects to short hoses made of rubber at each wheel so that suspension travel will not crack a solid Brake Line. Early 325i models applied plain steel, which is strong but prone to salt corrosion that can leave holes in the Brake Line and steal pressure. Later, stainless variants fight rust much longer. The rubber portion of the Brake Line can flex easily but can become aged to a point where it will crack, bulge, or internally swell to cause a soft pedal. Performance drivers switch to braided stainless hose style to reduce expansion and increase sharp response during spirited 325i braking. Original BMW hardware ensures that fittings are exact, and the signature BMW balance can be maintained. Routine visual checks remain vital because anyone on the road is endangered if a Brake Line is damaged.

If you are looking for OEM BMW 325i Brake Line, 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 Brake Line that come backed by the manufacturer's warranty.

BMW 325i Brake Line Parts Questions & Experts Answers

Brake Hose Rear
34306792253
Q:
How to inspect and replace brake hoses and Brake Line on BMW 325i?
Posted by Andrei I.
A:
About every six months, inspect the flexible hoses that connect the steel brake lines with the front and rear brake assemblies for cracks, chafing, leaks, blisters, and other damage. Use a light and mirror for a thorough check. If any defects are found, replace the hose with a new one. Clean dirt away from the hose ends. To remove a brake hose, unscrew the tube nut with a flare-nut wrench and remove the bolt(s) or clip(s) securing the hose to the body. Disconnect the hose from the caliper, discarding the sealing washers. Attach the new hose to the caliper using new sealing washers and tighten the banjo fitting bolt. Install the hose, ensuring it isn't twisted, and check for contact with suspension or steering components. Bleed the brake system and test the brakes before normal operation. When replacing brake lines, use the correct steel parts and avoid using copper tubing. Prefabricated brake lines with flared tube ends and fittings can be bent to the proper shapes using a tubing bender. Ensure the new line is well supported and has clearance from moving or hot components. After installation, check the master cylinder fluid level, add fluid if necessary, bleed the brake system, and test the brakes before normal operation.
Answered by BMW Parts Specialist Chaz / Jul 16, 2024

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