Moog RK643554 Suspension Trailing Arm - Rear Left

Rear Left Suspension Trailing Arm for Subaru

Moog RK643554 is a premium suspension trailing arm built for rear left applications on select Subaru Legacy and Subaru Outback models. It is engineered for structural strength and corrosion protection, making it a direct replacement choice for drivers servicing rear suspension wear on 2015-2019 Subaru Legacy and 2015-2019 Subaru Outback vehicles.

Key Features

• Premium-grade suspension trailing arm for rear left position
• Built for structural strength in demanding suspension service
• Corrosion protection helps support long-term durability
• Direct-fit replacement for select Subaru rear suspension applications
• Moog RK643554 cross-references Delphi TC8075 and Dorman OE Solutions 528-019

Detailed Description

Moog RK643554 is a rear left suspension trailing arm for 2015-2019 Subaru Legacy and 2015-2019 Subaru Outback models. As a premium control arm component, it is made for the rear suspension where alignment stability, wheel control, and consistent handling depend on a solid mounting point. The Moog suspension line is known for replacement parts engineered with structural strength and corrosion protection in mind, and this part follows that approach for foreign and domestic nameplates. This part number, RK643554, is also referenced by Mevotech Supreme CMS801198 and OE-style numbers 20250AL03A and CA72534PR for the same application.

What It Helps Address

• Rear suspension looseness or instability
• Excessive play from a worn trailing arm
• Uneven rear tire wear related to suspension wear
• Noises from the rear suspension area
• Alignment issues tied to a damaged rear left arm

Installation Notes and Tips

Fits 2015-2019 Subaru Legacy, rear left. Fits 2015-2019 Subaru Outback, rear left. Verify the rear left position and compare the original arm before installation. After replacement, a professional wheel alignment is recommended to confirm rear suspension geometry. Confirm all mounting points and surrounding suspension components are in serviceable condition before final assembly.

Quality Assurance

Moog markets this part as a premium suspension component with structural-strength and corrosion-protection focus for foreign and domestic applications. RK643554 is built to meet the needs of rear suspension service on Subaru Legacy and Subaru Outback models.