How often should you inspect the Brake Line connecting the steel brake line to the brake assemblies on Mazda 3?

Check the brake system, and the flexible hoses are the most important and delicate components that should be carefully examined with a light and a mirror under every six months, when the vehicle is raised, and the hoses are safely fastened on jackstands, inspecting them for cracks, chafing, leaks, blisters and other damages. In case of any defects, a new hose should be used. First wipe off all the dirt on the ends of the hose and then unscrew using a flare-nut wrench the tube nut that attaches the hose to the frame bracket, unscrew the clip and then attach the hose. Then unbolt or unclip any hose in place on the other brackets and unscrew the hose off of the caliper. Install the new brake hose screwing it to the caliper and screwing the tube nut fitting to the recommended torque without twisting the hose. Ensure that there is no contact between suspension or steering elements and the hose, and start bleeding the brake system. When changing the brake lines be sure that you use the right parts as do not use copper tubing in any part of the brake system and buy steel brake lines at a car dealership or auto parts store. Ready-made brake lines that have flared ends of tubes and fitted components are ready and may be bent to the necessary shapes with a tubing bender. Make sure that the new line is firmly seated in the brackets with ample clearance of moving or hot parts, inspect the master cylinder fluid level, and add fluid where needed and carefully test the brakes and return the vehicle to normal operation.

Genuine Mazda 3 Brake Line

Brake Hose

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19 Brake Lines found

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Mazda 3 Flex Hose Part Number: BCKA-43-820
$36.20 MSRP: $48.27
You Save: $12.07 (26%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Hose(Left), Flexible; Brake Hose
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2025 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Flex Hose Part Number: BCKA-43-810
$45.55 MSRP: $60.74
You Save: $15.19 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose(Right), Flexible; Brake Hose
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2025 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Flex Hose Part Number: GML8-43-810
$54.28 MSRP: $72.38
You Save: $18.10 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Flexible; Brake Hose
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2017-2018 Mazda 3 | Grand Touring, Sport, Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Flex Hose Part Number: BJS7-43-810
$12.60 MSRP: $16.80
You Save: $4.20 (25%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Flexible; Brake Hose
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2018 Mazda 3 | Grand Touring, I Sport, I Touring, Sport, Touring, i Grand Touring, i SV, s Grand Touring, s Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Brake Hose Part Number: BADE-43-810
$12.40 MSRP: $16.54
You Save: $4.14 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Flexible
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2017-2018 Mazda 3 | Grand Touring, Sport, Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Flex Hose Part Number: BJS7-43-980A
$21.81 MSRP: $29.09
You Save: $7.28 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Flexible; Brake Hose
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2018 Mazda 3 | Grand Touring, I Sport, I Touring, Sport, Touring, i Grand Touring, i SV, s Grand Touring, s Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Brake Hose Part Number: BCKA-45-280
$22.36 MSRP: $29.83
You Save: $7.47 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pipe(Right), Brake-Front
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019 Mazda 3 | Base | 4 Cyl 2.5 L GAS
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Mazda 3 Flex Hose Part Number: BDTS-43-980B
$25.66 MSRP: $34.23
You Save: $8.57 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose(Right), Flexible-Front; Brake Hose
- Position: Passenger Side
- Replaced by: BDTS-43-980C
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2025 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
View related parts
Mazda 3 Flex Hose Part Number: BDTS-43-990B
$26.70 MSRP: $35.61
You Save: $8.91 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose(Left), Flexible-Front; Brake Hose
- Position: Driver Side
- Replaced by: BDTS-43-990C
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2025 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
View related parts
Mazda 3 Brake Hose Part Number: BDTS-43-810A
$28.94 MSRP: $38.59
You Save: $9.65 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose(Right), Flexible
- Position: Passenger Side
- Replaced by: BDTS-43-810B
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2025 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
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Mazda 3 Flex Hose Part Number: BP4L-43-980E
$39.01 MSRP: $52.03
You Save: $13.02 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Flexible; Brake Hose
- Replaces: BP4L-43-980D, BP4L-43-980B
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2004-2013 Mazda 3 | Mazdaspeed, S, SP23, i | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
View related parts
Mazda 3 Flex Hose Part Number: BCKA-43-980B
$42.99 MSRP: $57.33
You Save: $14.34 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose(Right), Flexible-Front; Brake Hose
- Replaced by: BCKA-43-980C
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2025 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
View related parts
Mazda 3 Flex Hose Part Number: BCKA-43-990B
$46.70 MSRP: $62.28
You Save: $15.58 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose(Left), Flexible-Front; Brake Hose
- Position: Driver Side
- Replaces: BCKA-43-990A, BCKA-43-990
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2025 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 S, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
View related parts
Mazda 3 Flex Hose Part Number: GHP9-43-810B
$60.19 MSRP: $80.27
You Save: $20.08 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Flexible; Brake Hose
- Replaces: GHP9-43-810A, GHP9-43-810
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2018 Mazda 3 | Grand Touring, I Sport, I Touring, Sport, Touring, i Grand Touring, i SV, s Grand Touring, s Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
View related parts
Mazda 3 Flex Hose Part Number: BP4K-43-980F
$78.16 MSRP: $104.23
You Save: $26.07 (26%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Flex; Brake Hose
- Replaces: BP4K-43-980D, BP4K-43-980B, BPYK-43-980
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2004-2013 Mazda 3 | Mazdaspeed, S, SP23, i | 4 Cyl 2.0 L GAS, 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L GAS
View related parts
Mazda 3 Brake Hose Part Number: BDTS-43-820A
$20.03 MSRP: $26.70
You Save: $6.67 (25%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose(Left), Flexible
- Position: Driver Side
- Replaced by: BDTS-43-820B
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2019-2025 Mazda 3 | 2.0, 2.5 Carbon Turbo, 2.5 Turbo, 2.5 Turbo Premium Plus, Base, Carbon Edition, Preferred, Premium, Select, Select Sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
View related parts
Mazda 3 Flex Hose Part Number: BJS7-43-990A
$27.78 MSRP: $37.03
You Save: $9.25 (25%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose(Left), Flexible-Front; Brake Hose
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2018 Mazda 3 | Grand Touring, I Sport, I Touring, Sport, Touring, i Grand Touring, i SV, s Grand Touring, s Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
View related parts
Mazda 3 Flex Hose Part Number: B45A-43-990A
$32.53 MSRP: $43.37
You Save: $10.84 (25%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose(Left), Flexible-Front; Brake Hose
- Position: Driver Side
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2018 Mazda 3 | Grand Touring, I Sport, I Touring, Sport, Touring, i Grand Touring, i SV, s Grand Touring, s Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
View related parts
Mazda 3 Flex Hose Part Number: B45A-43-980A
$32.53 MSRP: $43.37
You Save: $10.84 (25%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Flexible; Brake Hose
- Position: Passenger Side
- Warranty: This genuine part is guaranteed by Mazda's factory warranty.
Fits the following Vehicles:
- 2014-2018 Mazda 3 | Grand Touring, I Sport, I Touring, Sport, Touring, i Grand Touring, i SV, s Grand Touring, s Touring | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS

Mazda 3 Brake Line

The Mazda 3 Brake Line provides the brake fluid to the calipers or the wheel cylinders, as the master cylinder goes through it to create the hydraulic pressure that allows the vehicle to slow down or to come to a stop when the driver pushes the pedal. Constructed of metal tubing or flex hose, it creates a closed channel in such a way that the force of the fluid is directed to the brake pistons without much expansion or loss. Metal can be chewed by road salt, making holes in the tube and letting the fluid out, eliminating hydraulic pressure and disabling braking force. Fittings may also be locked with rust, and when they do so, they may be difficult to loosen, and when loosened they may be bent and damaged. Since the component is mounted on frame rails underneath the Mazda, it can be dented or split in case of stone or any other obstacle impact, and the damage of contact must be reviewed in particular after using on rough roads. Flexible parts may be cracked, bulged, or abraded when the hose rubs against the surrounding parts or hardens due to age and internal swelling can limit flow and give a spongy pedal action. The failure of a Brake Line may cause dragging or pulling of brakes, or an irregular response, therefore it is important to detect this. The owners of the 3 need to check in routine inspections leaks, dents, and seized fittings to maintain the hydraulic force at the same level. The Brake Line should be clean, well-installed and devoid of any external or internal flaws to ensure that the Mazda braking system has a reliable pedal feel and stopping distances. Frequent check-ups can keep Mazda drivers out of pressure loss and maintain vehicle control.

Looking for Brake Line with proven quality? Choose OEM Brake Line. Mazda designs and builds them to strict factory specs. Every piece goes through rigorous quality checks. You'll get parts that fit right and work like new. Shop our huge inventory of OEM Mazda 3 parts. Enjoy the highly competitive prices online. Our site is your one-stop shop. Each genuine 3 part includes a manufacturer's warranty. Buy with confidence. Our return policy is simple and hassle-free. In a rush? Choose expedited delivery at checkout. You'll love the streamlined experience from search to checkout to receiving your order.

Mazda 3 Brake Line Parts and Q&A

Flex Hose
BP4K-43-980F
Q:
How often should you inspect the Brake Line connecting the steel brake line to the brake assemblies on Mazda 3?
A:
Check the brake system, and the flexible hoses are the most important and delicate components that should be carefully examined with a light and a mirror under every six months, when the vehicle is raised, and the hoses are safely fastened on jackstands, inspecting them for cracks, chafing, leaks, blisters and other damages. In case of any defects, a new hose should be used. First wipe off all the dirt on the ends of the hose and then unscrew using a flare-nut wrench the tube nut that attaches the hose to the frame bracket, unscrew the clip and then attach the hose. Then unbolt or unclip any hose in place on the other brackets and unscrew the hose off of the caliper. Install the new brake hose screwing it to the caliper and screwing the tube nut fitting to the recommended torque without twisting the hose. Ensure that there is no contact between suspension or steering elements and the hose, and start bleeding the brake system. When changing the brake lines be sure that you use the right parts as do not use copper tubing in any part of the brake system and buy steel brake lines at a car dealership or auto parts store. Ready-made brake lines that have flared ends of tubes and fitted components are ready and may be bent to the necessary shapes with a tubing bender. Make sure that the new line is firmly seated in the brackets with ample clearance of moving or hot parts, inspect the master cylinder fluid level, and add fluid where needed and carefully test the brakes and return the vehicle to normal operation.