When a 4L80E or 4L85E clutch pack has been running hot, swapping in a kolene-treated steel module instead of a plain replacement can make the difference between a repair that holds and one that comes back. This is a single hi-performance steel module, sold individually, and it is the only piece inside the package.
The kolene surface service is what separates this steel from a standard unit. The process hardens the surface and improves heat dissipation at the friction interface, which is exactly where plain steels tend to blue, warp, or score under sustained torque or temperature. For automatic transmission rebuilds where the root cause was thermal stress, that distinction is relevant before you close the case.
The application covers 4L80E and 4L85E units from 1991 and up. Both designations share the same module, so a single part number serves either. That said, confirm the code stamped or tagged on the actual unit before ordering: a visual assumption on a similar-looking case is how wrong parts end up on a bench.
This listing does not include friction discs, seals, gaskets, o-rings, Automatic Transmission Filter, band, or any overhaul kit components. If your rebuild requires those, they need to be sourced separately. The weight of this module is 7.7 lb, which is useful if you are calculating shipping or comparing against a spec sheet.
REMCO has been working in automatic transmissions since 1991. Each order is picked individually and checked against the part number before it ships. A parts list is included in the box so the technician receiving it can verify the piece on arrival.
- This kolene-treated steel module addresses high-heat clutch pack failures in 4L80E and 4L85E automatic transmission units, reducing the risk of repeat wear under demanding conditions.
- This listing covers a single steel module only. It does not include friction discs, seals, gaskets, Automatic Transmission Filters, or any other components. Verify your full parts list before ordering to avoid a return trip.
- The kolene surface finish on this steel sets it apart from a standard replacement: that finish improves heat dissipation and surface hardness, which matters most in units that run hot or handle higher torque loads.
- One (1) hi-performance kolene steel module, weight 7.7 lb. No additional pieces are included in this listing.
- Before ordering, confirm the transmission code on your unit is 4L80E or 4L85E and that the build year falls within the 1991-and-up application range. A wrong code means a wrong fit.
What's in the box
- 1 x Steel Clutch Pack, 4L80E High Performance Module Kolene
Compatible vehicles
- Fits Silverado 2500 [99-04], Sierra 2500 [99-04], Silverado 2500 HD [01-07], Sierra 2500 HD [01-07], Silverado 3500 [01-07], Sierra 3500 [01-07], Silverado 1500 HD [01-07], Sierra 1500 HD [01-07], Suburban 2500 [00-07], Yukon XL 2500 [00-07], Yukon XL 1500 [01-03], Suburban 1500 [01-03], Avalanche 2500 [02-06], Express 2500 [96-09], Express 3500 [96-09], Savana 2500 [96-09], Savana 3500 [96-09], C1500 Suburban [93-99], C2500 Suburban [93-99], K1500 Suburban [93-99], K2500 Suburban [93-99], Yukon [93-01], H1 [92-06].
| 4l80e hi-performance steel module kolene Automatic transmission |
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