Vendor : UMI Performance
Product Type : Differential Bushings
Sku : UMI2999
Couldn't load pickup availability
The UMI P/N 2999 adds the finishing touch to allow full articulation of the GM 4-link rear suspension. By using 2999 and either Roto-Joints or rod ends in the other six locations, your 4-link will move bind-free whether it be autocross transition, road race cornering or just back road corner carving. These Roto-Joints install with a gentle press fit and are retained by a spiral retaining ring. The 6061-T6 aluminum housing is pre-greased with Synco Super Lube and will provide smooth motion for years to come. 100% manufactured in Philipsburg, PA-USA.
Installation InstructionsThis Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1965-1967 | Buick | Gran Sport | Base |
| 1978-1987 | Buick | Regal | Base |
| 1988 | Buick | Regal | Custom |
| 1982-1983 | Buick | Regal | Estate Wagon |
| 1987 | Buick | Regal | GNX |
| 1984-1987 | Buick | Regal | Grand National |
| 1978-1988 | Buick | Regal | Limited |
| 1982 | Buick | Regal | Limited Turbo |
| 1978-1982 | Buick | Regal | Sport |
| 1983-1986 | Buick | Regal | T-Type |
| 1970,1972 | Buick | Skylark | 350 |
| 1965-1972 | Buick | Skylark | Base |
| 1968-1972 | Buick | Skylark | Custom |
| 1965-1969 | Buick | Special | Base |
| 1965-1967 | Buick | Special | Deluxe |
| 1965-1968 | Chevrolet | Chevelle | 300 |
| 1965-1969 | Chevrolet | Chevelle | 300 Deluxe |
| 1970-1972 | Chevrolet | Chevelle | Base |
| 1967-1972 | Chevrolet | Chevelle | Concours |
| 1969-1972 | Chevrolet | Chevelle | Concours Estate |
| 1973 | Chevrolet | Chevelle | Deluxe |
| 1969-1972 | Chevrolet | Chevelle | Greenbrier |
| 1971-1972 | Chevrolet | Chevelle | Heavy Chevy |
| 1973 | Chevrolet | Chevelle | Laguna |
| 1973 | Chevrolet | Chevelle | Laguna Estate |
| 1965-1973 | Chevrolet | Chevelle | Malibu |
| 1973 | Chevrolet | Chevelle | Malibu Estate |
| 1965 | Chevrolet | Chevelle | Malibu Super Sport |
| 1968-1972 | Chevrolet | Chevelle | Nomad |
| 1968 | Chevrolet | Chevelle | Nomad Custom |
| 1971-1973 | Chevrolet | Chevelle | SS |
| 1967-1970 | Chevrolet | Chevelle | SS 396 |
| 1970 | Chevrolet | Chevelle | SS 454 |
| 1966 | Chevrolet | Chevelle | Super Sport 396 |
| 1965-1972,1978-1987 | Chevrolet | El Camino | Base |
| 1978,1981-1986 | Chevrolet | El Camino | Conquista |
| 1968-1972 | Chevrolet | El Camino | Custom |
| 1979-1981 | Chevrolet | El Camino | Royal Knight |
| 1968-1972,1978-1987 | Chevrolet | El Camino | SS |
| 1978-1981 | Chevrolet | Malibu | Base |
| 1978-1983 | Chevrolet | Malibu | Classic |
| 1978-1980 | Chevrolet | Malibu | Classic Estate |
| 1978-1981 | Chevrolet | Malibu | Classic Landau |
| 1979-1980 | Chevrolet | Malibu | Classic Sport |
| 1979-1980 | Chevrolet | Malibu | Estate |
| 1979 | Chevrolet | Malibu | Landau |
| 1979 | Chevrolet | Malibu | Police |
| 1979-1980 | Chevrolet | Malibu | Sport |
| 1970-1972,1979,1981-1988 | Chevrolet | Monte Carlo | Base |
| 1983 | Chevrolet | Monte Carlo | CL |
| 1978-1981 | Chevrolet | Monte Carlo | Landau |
| 1986-1988 | Chevrolet | Monte Carlo | LS |
| 1978,1980 | Chevrolet | Monte Carlo | Sport |
| 1983-1988 | Chevrolet | Monte Carlo | SS |
| 1965-1971 | Oldsmobile | 442 | Base |
| 1965-1972,1980 | Oldsmobile | Cutlass | Base |
| 1980-1981 | Oldsmobile | Cutlass | Brougham |
| 1972 | Oldsmobile | Cutlass | Cruiser |
| 1965-1967 | Oldsmobile | Cutlass | Holiday |
| 1980-1981 | Oldsmobile | Cutlass | LS |
| 1968,1971-1972 | Oldsmobile | Cutlass | S |
| 1967 | Oldsmobile | Cutlass | Turnpike Cruiser |
| 1978-1979 | Oldsmobile | Cutlass | Vista Cruiser |
| 1979 | Oldsmobile | Cutlass | Vista Cruiser Brougham |
| 1965-1972 | Oldsmobile | F85 | Base |
| 1965-1966 | Oldsmobile | F85 | Deluxe |
| 1966 | Oldsmobile | F85 | Holiday |
| 1978-1988 | Pontiac | Grand Prix | Base |
| 1981-1987 | Pontiac | Grand Prix | Brougham |
| 1984-1988 | Pontiac | Grand Prix | LE |
| 1978-1983 | Pontiac | Grand Prix | LJ |
| 1988 | Pontiac | Grand Prix | SE |
| 1978-1980 | Pontiac | Grand Prix | SJ |
| 1965-1972 | Pontiac | GTO | Base |
| 1970-1971 | Pontiac | GTO | The Judge |
| 1988 | Pontiac | LeMans | Aerocoupe |
| 1988 | Pontiac | LeMans | Aerocoupe YL |
| 1965-1972,1978-1981,1988 | Pontiac | LeMans | Base |
| 1972 | Pontiac | LeMans | Luxury |
| 1969-1970,1978-1981 | Pontiac | LeMans | Safari |
| 1988 | Pontiac | LeMans | SE |
| 1970-1972 | Pontiac | LeMans | Sport |
| 1971 | Pontiac | LeMans | T37 |
| 1988 | Pontiac | LeMans | Value Leader |
We will be temporarily closed from Monday 10th August until Friday 21st August 2026 while we relocate to our new premises and carry out our annual stock take. Our website will remain open and you are welcome to place orders during this period. However, new orders placed between 11th and 21st August will not be processed or dispatched until we reopen. Please note: Any orders currently open and already in our system will continue to be processed as normal and will not be affected by the temporary closure. If you have an urgent order or require something that cannot wait until we reopen, please contact us via our website chat or email. We will do our best to assist wherever possible. Normal service will resume on Saturday 22nd August 2026. We apologise for any inconvenience this may cause and greatly appreciate your patience and continued support while we complete our relocation and annual stock take. Thank you for your understanding and continued support.
