OE-Style Rear Suspension Lateral Arm

Delphi TC4618 is a rear right lower rearward lateral arm built for BMW suspension service on select 5 Series, 7 Series, 8 Series, and M models. It uses forged steel construction, rubber bushings, and a painted black finish to match OE-style replacement needs for the rear suspension.

• Forged steel construction for strength and consistent geometry
• Black painted finish with matte appearance
• Rubber bushings included for rear suspension articulation
• Standard replacement grade for direct service use
• Non-adjustable, grease-free design
• Position: rear right lower rearward
• Part number: TC4618

Fitment and Application Details

Compatible with BMW rear suspension applications including the 2020-2024 BMW 840i, 2020-2024 BMW 840i Gran Coupe, 2020-2024 BMW 840i xDrive, 2020-2024 BMW 840i xDrive Gran Coupe, 2019-2024 BMW M850i xDrive, 2020-2024 BMW M850i xDrive Gran Coupe, 2018-2023 BMW 530e, 2018-2023 BMW 530e xDrive, 2017-2023 BMW 530i, 2017-2023 BMW 530i xDrive, 2017-2023 BMW 540i, 2017-2023 BMW 540i xDrive, 2022-2023 BMW Alpina B8 Gran Coupe, 2018-2023 BMW M550i xDrive, 2016-2022 BMW 740i, 2017-2022 BMW 740i xDrive, 2020-2022 BMW 745e xDrive, 2016-2022 BMW 750i xDrive, 2017-2022 BMW M760i xDrive, 2017-2020 BMW 750Li xDrive, 2017-2020 BMW M760Li xDrive, 2018-2019 BMW 640i xDrive Gran Turismo, 2017-2019 BMW 740e xDrive, 2016-2019 BMW 750i, and 2018 BMW 540d xDrive.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Lateral Arm Helps Address

• Rear suspension looseness or instability
• Clunking or knocking from worn bushings
• Uneven rear tire wear caused by worn suspension geometry
• Excessive rear wheel movement under load
• Restoration of rear suspension alignment integrity after wear

Installation Notes and Tips

Verify the rear right lower rearward position before installation and compare the arm length, mounting hole diameters, and bushing dimensions to the removed part. Because this is a non-adjustable lateral arm, proper alignment should be checked after replacement. Mounting hardware is not included.

Quality Assurance

Delphi applies OE-focused dimensional and material analysis to support fitment accuracy and part compatibility. The arm is tested for harsh temperature exposure and salt-spray resistance to reflect demanding underbody conditions found in everyday BMW suspension service. Part number TC4618 is built as a standard replacement for the listed BMW applications.