UMI Performance · New
UMI Performance 78-88 GM G-Body Modular Adjustable Transmission Crossmember - Black
MPN 3108-B · Store SKU umi3108-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
Introducing UMI's Cutting-Edge Modular Crossmember System: The Ultimate Transmission Mounting Solution for Your 1978-1988 GM G-Body Transform your GM G-body with UMI's state-of-the-art modular crossmember system, designed to deliver precision, performance, and versatility. Engineered with a laser-cut tab and slot design, this innovative solution offers multiple mounting locations, enabling you to fine-tune your driveline angle effortlessly. Our brace designs provides plenty of space for large diameter dual exhausts, ensuring seamless installation and optimal functionality. Whether you're upgrading or maintaining your vehicle, our system accommodates various transmission models with ease. Total Brace Weight: 22 lbs. 3108 - 1978-1988 GM G-Body Modular Transmission Crossmember, Adjustable
Manufacturer fitment & guides
Check 3108-B against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y
