BMW Connection Piece (M12X1) - Genuine BMW 34326874043

Product Information

BMW Brake Hoses diagram for 320i, 320i xDrive, 328d xDrive, 335i, & more

Brake hydraulic hoses, or brake hoses, are the flexible hoses that connect the hard lines that run along the body or frame of your vehicle to the brake calipers. Brake hoses are unique in the fact they are designed and sized properly to move with the suspension as it travels up and down over bumps in the road.

Since brake hoses carry hydraulic fluid as well as transfer pressure to the brake calipers/wheel cylinders it is critical to inspect these hoses regularly for any types of fraying or external cracks. Traditional rubber hoses tend to shrink over time internally restricting the flow of pressure to the brake calipers. Because of this, It's recommended to replace brake hoses in matched pairs to ensure even braking performance at each corner of the axle.

• Cracks or frays on external layer of hose
• Heavy corrosion on end fittings
• Leaks of any kind
• Loss of brake pedal pressure
• Poor braking performance
• Inoperable brakes

About Genuine BMW

The original parts used by BMW to build your car are available as replacement parts under the “Genuine BMW” brand. When ordering a Genuine BMW part you are guaranteed to get the same part that you would pick up from your local dealerships part department. Genuine BMW parts have been built to BMW’s stringent standards and are the same quality of the original parts used to build your Ultimate Driving Machine.

You may not realize this, but the parts that make up your BMW are not necessarily manufactured by BMW. No cause for concern, as BMW designs the part, hires a manufacturer, and ensures its quality to you. In fact, many of these manufacturers have been making parts for BMW for decades. In our industry these manufacturers are called OEM (Original Equipment Manufacturers), and these are often brands you recognize, including Lemforder, ZF, Sachs, Bosch, Valeo, Zimmermann, Siemens VDO, Corteco, and more. Don’t be surprised to open that Genuine BMW parts box and find an OEM branded part inside, simply with the addition of a BMW logo.

Be sure to keep an eye out for OE tags on our product pages to quickly identify parts coming direct from OE manufacturers. That extra bit of insight could save you some serious money while shopping! Refer to our OE Academy for further information regarding the OE/OEM tags throughout the site.