Keep the rear suspension tracking straight and quiet with the Mevotech Supreme Lateral Arm CMS401290, the rear left upper lateral arm for your vehicle. It installs as a direct-fit replacement for the 2020-2025 Ford Explorer, 2020-2025 Ford Police Interceptor Utility, and 2020-2025 Lincoln Aviator, locating the wheel and helping hold the factory suspension geometry so the tire stays properly aligned through bumps and cornering.
Position: rear left upper lateral arm — replaces the worn original in that location.
Function: connects the knuckle/carrier to the chassis to control wheel movement and maintain alignment settings.
Signs it may need replacing: clunking or knocking over bumps, uneven tire wear, or an alignment that won't hold — have the cause diagnosed, since these symptoms can come from other suspension parts.
Sold individually; inspect the matching side and replace in pairs if the opposite arm shows similar wear.
After installation, have the wheel alignment checked and set to specification.
Interchange: 19534177 · LB5Z5500D · LB5Z5500G · LB5Z5500N · GS401290 · 2608975 · 3CB403079 Manufacturer part number CMS401290.
This part cross-references / interchanges with the following part numbers:
It is the rear left upper lateral arm, cataloged for that specific position on the listed applications.
Which vehicles does the CMS401290 fit?
It is a direct-fit replacement for the 2020-2025 Ford Explorer, 2020-2025 Ford Police Interceptor Utility, and 2020-2025 Lincoln Aviator. Check the Buyer's Guide tab to confirm your vehicle.
What does a lateral arm do?
It links the wheel carrier to the chassis, controlling wheel movement and helping maintain the suspension alignment geometry as the vehicle drives.
What are signs this arm may need replacing?
Clunking over bumps, uneven tire wear, or alignment that won't stay set can indicate a worn arm. Because other parts cause these too, have the cause diagnosed first.
Do I need an alignment after installing it?
Yes. Have the wheel alignment checked and set to the vehicle's specification after replacing the arm.
Lateral ArmOPTIMAL PERFORMANCE: Meet or exceed OE specifications with steel tube construction.RESISTS CORROSION: Prevent rust build up and increase longevity with protective surface treatment.
Lateral ArmBEEFY AND DURABLE: Upgraded to forged steel construction with a structure change for increased durability.RESISTS CORROSION: Prevent rust build up and increase longevity with protective...
WARNING:
These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to
www.P65Warnings.ca.gov.
