UMI Performance · New
UMI Performance 59-64 GM B-Body Rear Upper Control Arm Mount
MPN 3660-B · Store SKU umi3660-B
Supplier stock checked 11/7/2026, 6:28:03 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
This new replacement rear control arm mount replaces the stock control arm mount that attaches the rear upper control arm to the vehicle chassis. This item works excellent when the factory mount is too rusted to re-use or when installing a 12-bolt 4-link set-up into a 3-link equipped vehicle. Replacement bracket is CNC machined from 0.188" thick steel plate, precision bent and supplied with a bright red or gloss black powder coat. Item includes new grade 8 hardware to complete installation. Note: This item is sold each. Please verify whether your vehicle has (1) or (2) upper control arms. Six cylinder and most small block vehicles were supplied with a 3-link rear suspension while big block vehicles used a 4-link set-up. 3660 - 1959-1964 GM B-Body Rear Upper Control Arm Mount
Manufacturer fitment & guides
Check 3660-B against the manufacturer’s application information below.
A manufacturer application guide is not available for this listing. Request the exact application from JuiceBuilt before payment.
Part-specific notes
- California Proposition 65: Y
