When a steel clutch plate warps, scores, or glazes, no amount of fresh friction discs will restore clean shifts in an automatic transmission. This listing is for a single steel clutch plate that fits AT540, AT542, AT543, and AT545 units from 1970 forward, sold individually so you replace exactly the layer that failed without buying parts you do not need.
The steel is the flat driving surface between friction discs in the clutch pack. When it is damaged, the pack cannot clamp evenly, and the result is slipping, shudder, or heat that destroys the surrounding frictions quickly. Swapping one bad steel while the unit is open saves a second teardown.
At 7 lb, this is a substantial plate. It is pulled from inventory at REMCO, checked against the part record, and sent out with a piece list in the box. REMCO has worked in automatic transmissions since 1991, and every item ships only after it has been verified against its listing.
This listing does not include friction discs, a rebuild kit, seals, gaskets, Automatic Transmission Filter, or band. If you need a full clutch pack or a complete overhaul kit for these units, those are separate listings. Check your parts diagram and count the steels your unit calls for before ordering multiples.
Confirm that your unit carries one of these four transmission codes: AT540, AT542, AT543, or AT545. These codes appear on the transmission case or the vehicle service record. If you are unsure which steel position you need, measure the old plate before placing the order.
- A worn or glazed steel clutch plate causes slipping and burnt clutches; this individual steel is the direct replacement for AT540, AT542, AT543, and AT545 units.
- This listing covers one steel clutch plate only. It does not include friction discs, seals, gaskets, Automatic Transmission Filter, band, or any other rebuild components. Verify what your unit needs before ordering.
- Steel clutch plates in these units take the full load of every shift cycle; replacing a damaged steel restores the clamping surface that frictions depend on to transfer torque without slipping.
- One steel clutch plate, 7 lb shipped. Pulled from inventory here and checked against the part record before it goes into the box, with a piece list included inside.
- Before ordering, confirm your transmission code is AT540, AT542, AT543, or AT545 and that this steel matches the layer you are replacing. Measure the old plate if you have it.
What's in the box
- 1 x Steel Clutch Pack, ALLISON AT540 AT545
Compatible vehicles
- Fits B50 2 Ton School Bus [71-72], C3500 1 Ton - Pickup [88-00], C3500HD 1 Ton Truck [91-02], C40 1 1/2 Ton Truck [71-79], C80 2 1/2 Ton Truck [71-79], F80 2 1/2 Ton Tilt Cab [71-79], K3500 1 Ton 4WD - Pickup [88-00], P4T042 Stripped Chassis [80-84], P6S042 Stripped Chassis [91-96], P6T042 Stripped Chassis [83-90], R3500 1 Ton - Pickup [88-91], S50 1 1/2 Ton School Bus [73-79].
| ALLISON AT540 AT545 Steel Clutch Pack Automatic transmission |
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