What is the difference between a 3-link and a 4-link rear suspension?

A 3-link suspension typically uses one upper control arm and two lower control arms to locate the rear axle. A 4-link suspension uses two upper and two lower control arms. This mount is designed to work with either setup, especially when converting to a 4-link.

Does this mount come with all the necessary hardware?

Yes, this rear upper control arm mount includes new Grade 8 hardware to complete the installation. You should still refer to the manufacturer's installation instructions for any specific torque specifications or procedures.

How do I know if my car originally had a 3-link or 4-link suspension?

Generally, six-cylinder and most small-block Chevrolet models from 1959-1964 came with a 3-link rear suspension. Big-block equipped vehicles typically used a 4-link setup. This mount can be used for replacement or for upgrading to a 4-link.

UMI Performance 59-64 GM B-Body Rear Upper Control Arm Mount

Specifications

Brand: UMI Performance
Part #: 3660-R
UPC: 3660-R

UMI Performance 59-64 GM B-Body Rear Upper Control Arm Mount

Name: UMI Performance 59-64 GM B-Body Rear Upper Control Arm Mount
Brand: UMI Performance
Price: 87.03 USD
Availability: InStock

$87.03

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1959-1964 Chevy Bel Air. UMI Performance rear upper control arm mount is a direct replacement for rusted factory parts or when upgrading to a 4-link setup.

Key Features

1959-1964 Chevrolet Bel Air rear upper control arm mount.
Replaces rusted or damaged factory upper control arm mounts.
CNC machined from 0.188" thick steel plate for a strong build.
Precision bent for a direct fit.
Available in bright red or gloss black powder coat finish.
Includes new Grade 8 hardware for installation.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Fits these vehicles

Chevrolet Bel Air 1959-1964
Chevrolet Biscayne 1959-1964
Chevrolet Impala 1959-1964

Product Details

If you're working on the rear suspension of your 1959-1964 Chevrolet Bel Air and find the stock upper control arm mount is rusted beyond repair, or if you're planning to swap in a 12-bolt rear end with a 4-link setup on a car that originally had a 3-link, this rear upper control arm mount from UMI Performance is what you need. It's designed to directly replace the original bracket that attaches the upper control arm to the chassis.

This mount is CNC machined from 0.188-inch thick steel plate, ensuring it's well-built and ready to handle the stresses of the road. It's precision bent for a good fit and comes with a durable bright red or gloss black powder coat finish to resist corrosion. UMI includes new Grade 8 hardware, so you'll have everything needed for installation, making the job smoother.

Remember, this part is sold individually. Make sure to check if your specific Bel Air originally came with one or two upper control arms, as this will determine how many mounts you need to order. Six-cylinder and most small-block cars typically had a 3-link rear suspension, while big-block cars usually had a 4-link setup.