Delphi TC446 Suspension Control Arm - Rear Lower

Delphi TC446 Rear Lower Suspension Control Arm

Delphi TC446 is a standard replacement rear lower suspension control arm built with steel and aluminum construction for select BMW applications. It is engineered for OE-style dimensional and material compatibility, making it a direct choice for restoring rear suspension geometry on BMW 5 Series, 6 Series, 7 Series, and M models.

Key Features

• Steel and aluminum construction with a casting/forged design
• Rear lower position for select BMW trailing arm link applications
• Bushings included; black rubber bearing type
• Silver finish with straight shape
• Press-in ball joint mounting type
• Standard replacement grade from Delphi
• Delphi TC446 for OE-style fit and material compatibility

Product Details

The Delphi TC446 suspension control arm is built for rear lower suspension service where precise alignment and stable rear-end control matter. Delphi applies OE-focused dimensional and material analysis to help ensure the aftermarket part matches the original application closely. This part is listed for rear lower and rear positions across select BMW models, including BMW 525i, 530i, 540i, 535i, M5, 735i, 635CSi, 528e, 535is, M6, 524td, and 533i. If you are replacing a worn rear lower control arm on a BMW 525i or BMW M5, Delphi TC446 provides a direct replacement option for the specified applications.

This part cross-references Beck/Arnley 101-4950 for the same application.

Common Problems This Part Can Address

• Rear suspension looseness or excess movement
• Uneven tire wear caused by worn rear control arm bushings
• Clunking or knocking from the rear suspension
• Imprecise rear alignment after component wear
• Handling instability from degraded trailing arm link components

Installation Notes and Tips

Verify the vehicle position and suspension layout before ordering, since this part is listed for rear lower and rear applications depending on model. Inspect adjacent bushings, mounting points, and alignment components during replacement. Because mounting hardware is not included, reuse or source the correct hardware separately as required by the vehicle. A professional alignment is recommended after installation to confirm rear suspension geometry.

Quality Assurance

Delphi subjects its OE-based steering and suspension components to extreme temperature and corrosion testing, including exposure below -40 degrees C, above 120 degrees C, and extended salt-spray testing. The TC446 is backed by Delphi’s OE-focused engineering approach for consistent fit and material control.