ZF 5HP19 Transmission Master Rebuild Kit, BMW Audi Porsche

A full master overhaul kit for the ZF 5HP19 five-speed automatic, the rear-drive box behind 1995-on BMW 3 Series (E36, E46) and 5 Series (E39), and the FLA transverse version used in the Audi A4, A6, A8 and VW Passat, plus the 2006-2008 Porsche Cayman. The kit carries the friction plates, steel plates, pan and case gaskets, lip seals, sealing rings and o-rings you replace on a teardown, so the trans goes back together with every wear item fresh rather than reusing burnt clutches.

On the bench this is what you lay out before you start reassembly: new frictions and steels for every clutch pack, the molded and lip seals for the pistons and drums, the metal-clad and lathe-cut sealing rings for the pump and shafts, and the gasket set for the valve body and pan. Soak the frictions before install and air-check each pack as you build it.

The 5HP19 typically comes across the bench for slipping on the 2-3 shift, delayed or harsh engagement when cold, and torque-converter lockup shudder from worn clutch material contaminating the fluid. Rebuilding with a complete kit clears the slip and restores clean shifts. The 5HP19 shipped in several internal variants over its run, so confirm your exact unit by the ZF part number stamped on the case before you order.