
Dorman 520-725 Suspension Control Arm and Ball Joint Assembly - Front Left Lower
Dorman 520-725 Front Left Lower Control Arm
This Dorman suspension control arm and ball joint assembly is a direct replacement for specific BMW applications. It is built for the front left lower position on 1978-1983 BMW 320i and is evaluated to help maintain smooth ride quality, directional stability, and predictable handling.
- Direct replacement for the original equipment control arm and ball joint assembly
- Fits 1978-1983 BMW 320i, front left lower
- Ball joint is installed and press-in mounted
- Pre-greased design with no grease fitting included
- Iron control arm construction with rubber bushings
- Includes mounting hardware and bushings
- Black casting/forged control arm finish
Built For OE-Style Suspension Service
Dorman 520-725 is a suspension control arm and ball joint assembly made for BMW 320i front left lower applications from 1978 through 1983. The assembly uses an iron control arm, rubber bushings, and a threaded ball joint stud with a 14 mm thread diameter. With the ball joint already installed and the unit pre-greased, this part supports a straightforward OE-style repair for worn front suspension components. This part cross-references Delphi TC358 for the same application.
Common Problems This Part Can Address
- Front-end clunking or looseness from a worn control arm assembly
- Uneven steering response caused by excess suspension play
- Directional instability during braking or lane changes
- Ball joint wear at the front left lower suspension point
- Rubber bushing deterioration that affects ride control
Installation Notes And Tips
Compatible With 1978-1983 BMW 320i, front left lower. Verify the mounting hole diameter of 12.3 mm and confirm the press-in ball joint style before installation. Because the assembly is not adjustable, proper alignment should be checked after replacement. The package contents are a control arm and ball joint assembly.
Quality Assurance
Dorman uses an industry-focused evaluation process for this suspension component to support consistent fit and function in the specified BMW 320i applications. Part number 520-725 is built as a direct replacement for OE-style suspension service.
Dorman 520-725 Suspension Control Arm and Ball Joint Assembly - Front Left Lower
Dorman 520-725 Front Left Lower Control Arm
This Dorman suspension control arm and ball joint assembly is a direct replacement for specific BMW applications. It is built for the front left lower position on 1978-1983 BMW 320i and is evaluated to help maintain smooth ride quality, directional stability, and predictable handling.
- Direct replacement for the original equipment control arm and ball joint assembly
- Fits 1978-1983 BMW 320i, front left lower
- Ball joint is installed and press-in mounted
- Pre-greased design with no grease fitting included
- Iron control arm construction with rubber bushings
- Includes mounting hardware and bushings
- Black casting/forged control arm finish
Built For OE-Style Suspension Service
Dorman 520-725 is a suspension control arm and ball joint assembly made for BMW 320i front left lower applications from 1978 through 1983. The assembly uses an iron control arm, rubber bushings, and a threaded ball joint stud with a 14 mm thread diameter. With the ball joint already installed and the unit pre-greased, this part supports a straightforward OE-style repair for worn front suspension components. This part cross-references Delphi TC358 for the same application.
Common Problems This Part Can Address
- Front-end clunking or looseness from a worn control arm assembly
- Uneven steering response caused by excess suspension play
- Directional instability during braking or lane changes
- Ball joint wear at the front left lower suspension point
- Rubber bushing deterioration that affects ride control
Installation Notes And Tips
Compatible With 1978-1983 BMW 320i, front left lower. Verify the mounting hole diameter of 12.3 mm and confirm the press-in ball joint style before installation. Because the assembly is not adjustable, proper alignment should be checked after replacement. The package contents are a control arm and ball joint assembly.
Quality Assurance
Dorman uses an industry-focused evaluation process for this suspension component to support consistent fit and function in the specified BMW 320i applications. Part number 520-725 is built as a direct replacement for OE-style suspension service.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Dorman 520-725 Front Left Lower Control Arm
This Dorman suspension control arm and ball joint assembly is a direct replacement for specific BMW applications. It is built for the front left lower position on 1978-1983 BMW 320i and is evaluated to help maintain smooth ride quality, directional stability, and predictable handling.
- Direct replacement for the original equipment control arm and ball joint assembly
- Fits 1978-1983 BMW 320i, front left lower
- Ball joint is installed and press-in mounted
- Pre-greased design with no grease fitting included
- Iron control arm construction with rubber bushings
- Includes mounting hardware and bushings
- Black casting/forged control arm finish
Built For OE-Style Suspension Service
Dorman 520-725 is a suspension control arm and ball joint assembly made for BMW 320i front left lower applications from 1978 through 1983. The assembly uses an iron control arm, rubber bushings, and a threaded ball joint stud with a 14 mm thread diameter. With the ball joint already installed and the unit pre-greased, this part supports a straightforward OE-style repair for worn front suspension components. This part cross-references Delphi TC358 for the same application.
Common Problems This Part Can Address
- Front-end clunking or looseness from a worn control arm assembly
- Uneven steering response caused by excess suspension play
- Directional instability during braking or lane changes
- Ball joint wear at the front left lower suspension point
- Rubber bushing deterioration that affects ride control
Installation Notes And Tips
Compatible With 1978-1983 BMW 320i, front left lower. Verify the mounting hole diameter of 12.3 mm and confirm the press-in ball joint style before installation. Because the assembly is not adjustable, proper alignment should be checked after replacement. The package contents are a control arm and ball joint assembly.
Quality Assurance
Dorman uses an industry-focused evaluation process for this suspension component to support consistent fit and function in the specified BMW 320i applications. Part number 520-725 is built as a direct replacement for OE-style suspension service.












