When a C4 or C5 automatic transmission case bushing wears beyond tolerance, shaft movement increases and internal leakage follows, shortening the life of an otherwise sound rebuild. This listing covers exactly one case bushing designed for C4 and C5 units built between 1964 and 1986, nothing more and nothing less, so the rebuilder is not paying for components that are already on hand.REMCO has been working in automatic transmission parts since 1991, and every piece that ships is checked against its parts record before it leaves. Because this is a single-component listing, the verification step is straightforward: the bushing in the box matches the bushing on the record.The case bushing sits at a critical support point inside the transmission case. When it is worn, the shaft it supports can move off axis, accelerating wear on adjacent components and introducing fluid paths that were not there at assembly. Replacing only this bushing when inspection confirms it is the worn part avoids unnecessary teardown and keeps rebuild cost in line.This item does not include seals, clutch packs, friction discs, steels, bands, a filter, or any other rebuild hardware. If your job requires those components, they need to be sourced separately. Check your inspection notes and parts list before placing the order.Weight is 1 lb. Confirm the unit code on the case reads C4 or C5 and that the production year falls between 1964 and 1986 before ordering. If the code or year is outside that range, this bushing is not the correct part for that job. Restoring proper shaft alignment in worn C4 and C5 cases prevents internal fluid loss and keeps the unit from failing prematurely after rebuild. This listing covers one case bushing only. It does not include seals, clutch packs, steels, bands, filters, or any other rebuild components. Review your parts list before ordering. A single-piece bushing sourced for C4 and C5 applications lets the rebuilder replace exactly the worn component without buying material that is not needed for the job. Contents: 1 case bushing. Application: C4 and C5 units. Date range: 1964 through 1986. Article weight: 1 lb. Before ordering, confirm the unit code stamped on the case matches C4 or C5 and that the build year falls within the 1964-1986 range covered here.