Delphi TC4841 Lateral Arm - Rear Left Upper Forward

OE-Style Rear Left Upper Forward Lateral Arm

Delphi TC4841 is a standard replacement lateral arm for the rear left upper forward position on select BMW suspension systems. Built from forged steel with a painted black finish, it uses rubber bushings at both ends to help restore proper rear suspension geometry and consistent handling response.

Key Features

• Part number: TC4841
• Forged steel construction with a matte black painted finish
• Rubber bushings included; bushing color is black
• Straight lateral arm design for the rear left upper forward position
• Standard replacement grade for OE-style service
• Not adjustable, not greaseable, and no ball joint included
• Length: 236.60 mm (9.315 in.)

Detailed Description

Delphi TC4841 is engineered as a rear suspension lateral arm for BMW X3 and BMW X4 applications that use the rear left upper forward position. Delphi applies OE-level dimensional and material analysis to help ensure proper fitment between the replacement part and the original suspension layout. The forged steel body and rubber bushings are selected for everyday road use, while the painted finish helps protect the arm’s surface.

This part cross-references Mevotech Supreme CMS101672 for the same application. For shoppers searching for a BMW X3 rear left upper forward lateral arm or a BMW X4 rear suspension arm replacement, TC4841 provides a direct OE-style service part option.

What It Helps Address

• Rear suspension looseness or instability from a worn lateral arm
• Clunking or knocking noises from deteriorated bushings
• Uneven rear wheel alignment caused by suspension wear
• Excessive rear-end movement over bumps or during cornering
• Restoring factory-style suspension geometry on BMW X3 and BMW X4 models

Installation Notes

Fits 2018-2023 BMW X3, Rear Left Upper Forward. Fits 2019-2023 BMW X4, Rear Left Upper Forward. Verify the rear left upper forward position before installation and compare the original arm length, bushing style, and mounting hole dimensions to confirm application match. Mounting hardware is not included, and the arm is not pre-greased.

Quality Assurance

Delphi subjects steering and suspension components to extreme temperature testing below -40 degrees C and above 120 degrees C, along with 720 hours of salt spray exposure. That testing, combined with OE-focused material and dimensional analysis, supports consistent fit and durability for TC4841 in BMW X3 and BMW X4 rear suspension service.