Moog RK643998 Suspension Control Arm - Rear Lower
OE Quality 60-Day Returns
Moog

Moog RK643998 Suspension Control Arm - Rear Lower

Brand Moog RK643998
Position Rear Lower
Grade Type Premium
Fits Chevrolet and GMC · 6 vehicles

Premium grade. Engineered for structural strength and corrosion protection.

Control arm. A suspension component built for precise support and control.

Cross-references Dorman - OE Solutions 526-135, Mevotech Original Grade GS501339 and Mevotech Supreme CMS501339 for the same application. See all 4.

$94.20Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing β€” free returns if it doesn't
Step 2 — Quantity
Order total $94.20
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Suspension Control Arm options

Rear Lower Control Arm for Equinox and Terrain

Moog RK643998 is a premium rear lower suspension control arm for select Chevrolet Equinox and GMC Terrain models. It is engineered for structural strength and corrosion protection, making it a direct replacement choice for rear suspension service on 2018-2020 vehicles.

Key Features

  • Premium-grade suspension control arm for rear lower position
  • Built for structural strength in demanding road conditions
  • Corrosion protection helps support long-term durability
  • Direct-fit replacement for select Chevrolet Equinox and GMC Terrain applications
  • Moog RK643998 cross-references Dorman OE Solutions 526-135 and Mevotech Supreme CMS501339 for the same application

Detailed Description

Moog RK643998 is a rear lower control arm for 2018-2020 Chevrolet Equinox and 2018-2020 GMC Terrain. This premium suspension component is intended for vehicles that need a replacement rear lower arm with a focus on strength and corrosion resistance. If you are searching for a rear lower control arm for 2018-2020 Chevrolet Equinox or a rear lower suspension control arm for 2018-2020 GMC Terrain, this part matches those applications directly.

The RK643998 part number is also useful when comparing OE-style replacement options during suspension repair. Moog RK643998 is listed alongside common interchange references for the same application, including Dorman OE Solutions 526-135 and Mevotech Supreme CMS501339.

Common Problems This Part Can Address

  • Rear suspension looseness or instability
  • Excessive play from a worn lower control arm
  • Corrosion-related replacement needs
  • Uneven rear suspension geometry after wear
  • Noisy rear suspension components during driving

Installation Notes and Tips

Verify year, make, model, and rear lower position before ordering. This part fits 2018-2020 Chevrolet Equinox, rear lower, and 2018-2020 GMC Terrain, rear lower. Inspect related bushings, fasteners, and alignment settings during suspension service, and confirm final alignment after installation.

Quality Assurance

Moog premium control arms are engineered for structural strength and corrosion protection for foreign and domestic nameplates. RK643998 is a premium-grade suspension control arm built to meet the needs of rear suspension replacement on the listed applications.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2020ChevroletEquinoxRear Lower—
2020GMCTerrainRear Lower—
2019ChevroletEquinoxRear Lower—
2019GMCTerrainRear Lower—
2018ChevroletEquinoxRear Lower—
2018GMCTerrainRear Lower—
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - OE Solutions — 526-135Mevotech Original Grade — GS501339Mevotech Supreme — CMS50133984059879