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    UMI Performance Modular Adjustable Transmission Crossmember — 1978-1988 GM G-Body | Black Powder Coat | 3108-B

    Vendor: UMI Performance
    Part Number: 3108-B
    Regular Price $349.99

    Available to order. In-stock orders typically ship in 1 to 2 business days.

    Not sure it fits your vehicle?
    Email sales@berryperformancesales.com with your year, make, model and engine, and we'll help you check fitment before you order.
    Fast Fulfillment: In-stock orders typically ship within 1 to 2 business days.
    Free Shipping on Orders Over $99 | Excludes freight shipments
    International Shipping Available: email sales@berryperformancesales.com for a quote.
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    The UMI Performance modular transmission crossmember is an adjustable mounting solution for 1978 to 1988 GM G-body vehicles. A laser cut tab and slot design offers multiple mounting locations so the driveline angle can be fine tuned, and the brace is shaped to clear large diameter dual exhaust systems. A CNC machined billet aluminum spacer is included for 1978 to 1981 frames, and the five position CNC machined billet aluminum transmission mount accepts two bushing mount options that are sold separately. Total brace weight is 22 lbs. This crossmember is made in the USA. This listing is the black powder coat finish.

    Specifications:

    • Modular adjustable transmission crossmember
    • Laser cut tab and slot design, lightweight and strong
    • 5 position CNC machined billet aluminum transmission mount
    • CNC machined billet aluminum spacer included for 1978-1981 frames
    • Accepts two transmission bushing mount options (sold separately)
    • Large cutouts clear oversized dual exhaust systems
    • Total brace weight: 22 lbs
    • Finish: Black Powder Coat
    • Made in the USA
    • Part number: 3108-B

    Vehicle Applications:

    • 1978 Buick Regal
    • 1979 Buick Regal
    • 1980 Buick Regal
    • 1981 Buick Regal
    • 1982 Buick Regal
    • 1983 Buick Regal
    • 1984 Buick Regal
    • 1985 Buick Regal
    • 1986 Buick Regal
    • 1987 Buick Regal
    • 1978 Chevrolet El Camino
    • 1979 Chevrolet El Camino
    • 1980 Chevrolet El Camino
    • 1981 Chevrolet El Camino
    • 1982 Chevrolet El Camino
    • 1983 Chevrolet El Camino
    • 1984 Chevrolet El Camino
    • 1985 Chevrolet El Camino
    • 1986 Chevrolet El Camino
    • 1987 Chevrolet El Camino
    • 1978 Chevrolet Malibu
    • 1979 Chevrolet Malibu
    • 1980 Chevrolet Malibu
    • 1981 Chevrolet Malibu
    • 1982 Chevrolet Malibu
    • 1983 Chevrolet Malibu
    • 1978 Chevrolet Monte Carlo
    • 1979 Chevrolet Monte Carlo
    • 1980 Chevrolet Monte Carlo
    • 1981 Chevrolet Monte Carlo
    • 1982 Chevrolet Monte Carlo
    • 1983 Chevrolet Monte Carlo
    • 1984 Chevrolet Monte Carlo
    • 1985 Chevrolet Monte Carlo
    • 1986 Chevrolet Monte Carlo
    • 1987 Chevrolet Monte Carlo
    • 1988 Chevrolet Monte Carlo
    • 1978 GMC Caballero
    • 1979 GMC Caballero
    • 1980 GMC Caballero
    • 1981 GMC Caballero
    • 1982 GMC Caballero
    • 1983 GMC Caballero
    • 1984 GMC Caballero
    • 1985 GMC Caballero
    • 1986 GMC Caballero
    • 1987 GMC Caballero
    • 1978 Oldsmobile Cutlass
    • 1979 Oldsmobile Cutlass
    • 1980 Oldsmobile Cutlass
    • 1981 Oldsmobile Cutlass
    • 1978 Oldsmobile Cutlass Calais
    • 1979 Oldsmobile Cutlass Calais
    • 1980 Oldsmobile Cutlass Calais
    • 1981 Oldsmobile Cutlass Calais
    • 1982 Oldsmobile Cutlass Calais
    • 1983 Oldsmobile Cutlass Calais
    • 1984 Oldsmobile Cutlass Calais
    • 1982 Oldsmobile Cutlass Ciera
    • 1983 Oldsmobile Cutlass Ciera
    • 1984 Oldsmobile Cutlass Ciera
    • 1985 Oldsmobile Cutlass Ciera
    • 1986 Oldsmobile Cutlass Ciera
    • 1987 Oldsmobile Cutlass Ciera
    • 1988 Oldsmobile Cutlass Ciera
    • 1980 Oldsmobile Cutlass Cruiser
    • 1981 Oldsmobile Cutlass Cruiser
    • 1982 Oldsmobile Cutlass Cruiser
    • 1983 Oldsmobile Cutlass Cruiser
    • 1978 Oldsmobile Cutlass Salon
    • 1979 Oldsmobile Cutlass Salon
    • 1980 Oldsmobile Cutlass Salon
    • 1985 Oldsmobile Cutlass Salon
    • 1986 Oldsmobile Cutlass Salon
    • 1987 Oldsmobile Cutlass Salon
    • 1978 Oldsmobile Cutlass Supreme
    • 1979 Oldsmobile Cutlass Supreme
    • 1980 Oldsmobile Cutlass Supreme
    • 1981 Oldsmobile Cutlass Supreme
    • 1982 Oldsmobile Cutlass Supreme
    • 1983 Oldsmobile Cutlass Supreme
    • 1984 Oldsmobile Cutlass Supreme
    • 1985 Oldsmobile Cutlass Supreme
    • 1986 Oldsmobile Cutlass Supreme
    • 1987 Oldsmobile Cutlass Supreme
    • 1988 Oldsmobile Cutlass Supreme
    • 1982 Pontiac Bonneville
    • 1983 Pontiac Bonneville
    • 1984 Pontiac Bonneville
    • 1985 Pontiac Bonneville
    • 1986 Pontiac Bonneville
    • 1978 Pontiac Grand Prix
    • 1979 Pontiac Grand Prix
    • 1980 Pontiac Grand Prix
    • 1981 Pontiac Grand Prix
    • 1982 Pontiac Grand Prix
    • 1983 Pontiac Grand Prix
    • 1984 Pontiac Grand Prix
    • 1985 Pontiac Grand Prix
    • 1986 Pontiac Grand Prix
    • 1987 Pontiac Grand Prix

    FAQ

    What vehicles does the UMI Performance modular transmission crossmember fit?

    It fits 1978 through 1988 GM G-body vehicles, including the Buick Regal, Chevrolet El Camino, Malibu and Monte Carlo, GMC Caballero, Oldsmobile Cutlass models, and Pontiac Grand Prix and Bonneville. A billet aluminum spacer is included to adapt 1978 to 1981 frames.

    Is this transmission crossmember adjustable?

    Yes. The crossmember uses a laser cut tab and slot design with a five position CNC machined billet aluminum transmission mount, which allows the driveline angle to be fine tuned across multiple mounting locations.

    Does the crossmember clear a dual exhaust system?

    Yes. The brace is designed with large cutouts that provide room for oversized dual exhaust systems.

    Does the crossmember include a transmission mount bushing?

    The transmission bushing mount is sold separately, with two options available, and the crossmember accepts either option.

    What is the difference between part number 3108-B and 3108-R?

    The two part numbers are the same crossmember in different finishes. Part number 3108-B is black powder coat and part number 3108-R is red powder coat.

    Shipping Policy
    • Free shipping on orders over $99 (excludes freight shipments).
    • In-stock orders typically ship within 1 to 2 business days. Weekend and holiday orders are processed the next business day.
    • Orders ship from Defiance, Ohio and a nationwide network of warehouses and manufacturers.
    • Items showing an ETA are not in stock yet. ETAs come from the manufacturer and can change.
    • No P.O. Boxes. International orders need a shipping quote, so email us first.

    Read the full Shipping Policy

    Return Policy
    • 30-day return window from the ship date. Returns must be approved first; email sales@berryperformancesales.com with your order number.
    • Items must be unused, complete and in the original packaging.
    • A 20% restocking fee applies, and return shipping is paid by the buyer.
    • Not returnable: installed or modified parts, opened or used programmers and tuners, custom orders, Open Box, and Clearance or Final Sale items.
    • Damaged, defective or incorrect items must be reported within 48 hours of delivery with photos.

    Read the full Return Policy

    Disclaimer

    All products are sold for off-road use only unless otherwise specified. Buyer assumes all responsibility for installation and operation. Seller is not liable for any incidental, indirect, or consequential damages — including engine failure, labor costs, or vehicle downtime — resulting from the use of any product sold.

    By making a purchase from Berry Performance Sales, you acknowledge and agree to abide by the terms and conditions of these Policies.

    For any questions or concerns, please contact us — we’re always happy to help.

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