ZF8HP55AF ZF8HP70 GPZ Friction Clutch Pack [10-UP]

When the clutch pack in an 8HP55AF or 8HP70 unit is burned, glazed, or worn past spec, replacing it with the correct GPZ friction is the straightforward fix that puts shift quality back where it belongs. This listing is a single GPZ friction clutch pack, sourced for the ZF8HP55AF and ZF8HP70 automatic transmission platforms covering 2010 and up production.

GPZ friction material handles the thermal load and the rapid shift cycling that 8-speed units demand. Standard friction material degrades faster under those conditions, which is why the platform calls for a specific compound. Getting the right material matters as much as getting the right count.

This is one piece, not a kit. It does not include any steel reaction plates, seals, O-rings, filter, band, or any other component. If your repair requires a full clutch pack stack or additional hardware, those need to be sourced separately. Review your parts breakdown before placing the order so you are not waiting on a second shipment to finish the job.

The part ships at 2 lb. Before ordering, match the unit code on the case to either ZF8HP55AF or ZF8HP70. The 8HP family has several variants and the codes are not interchangeable. Confirm the production year of the unit falls within the 2010-and-up range covered here. A few minutes verifying those details avoids a return and keeps the job moving.

• Restoring proper clutch engagement in 8HP55AF and 8HP70 units prevents slip, shudder, and premature wear that lead to repeat failures on the bench.
• This listing covers one GPZ friction clutch pack only. It does not include steels, seals, filter, bands, or any other transmission components. Verify your full parts list before ordering.
• GPZ friction material is the distinguishing feature here: it is formulated to handle the heat and shift cycles specific to 8-speed automatic transmission applications, unlike standard paper-based frictions.
• Exact contents: one GPZ friction clutch pack, 2 lb shipped. No substitutions, no filler pieces. The part is verified against the SKU at the time it leaves the warehouse.
• Before ordering, confirm your unit code matches ZF8HP55AF or ZF8HP70 and that the application year falls within the 2010-and-up range. Unit codes vary and a mismatch means the wrong friction.