Symptoms:

  • Soft shifts
  • Flare shifts
  • Harsh shifts
  • Burnt clutches
  • Pressure loss

Cause:

Damaged, deformed and/or eroded end plugs and bores allow loss of critical hydraulic pressure.

Correction:

Recover hydraulic control and renew crucial circuit pressures by installing Sonnax O-ringed end plug kit.

845RE, ZF8HP45, ZF8HP55, ZF8HP70

O-Ringed End Plug Kit
Part No. 35740-30K

You need this if... View Instructions Find a Distributor

OE end plugs are designed to prevent critical pressure loss by capping the bore, while also functioning as a spring or valve stop. Repetitive spring motion, valve impact and fluid pressure variations cause wear between the end plug and bore mating surface, allowing vital pressure to escape the circuit.

Sonnax O-ringed end plug kit 35740-30K services eight individual bores in Chrysler 845RE, ZF8HP45, ZF8HP55 and ZF8HP70 valve bodies which use internal end plugs to isolate valves from solenoids. These double O-ringed end plugs replace damaged OE plugs and restore pressure containment to the bores.

Also included are single O-ringed end plugs that service the three 13mm bores in these valve bodies.

  • Prevents loss of critical pressure
  • No machining or special tools required
  • Services all 11 bores where end plug sealing is critical for proper function
  • Internal End Plugs (8) 12mm Dia.
  • End Plugs (3) 13mm Dia.
  • O-Rings (27) 8 Extra

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

ZF8HP55 Valve Body Layout

ZF8HP55 Valve Body Layout

ZF8HP45, ZF8HP70 Valve Body Layout

ZF8HP45, ZF8HP70 Valve Body Layout
  • 845RE, ZF8HP45, ZF8HP55, ZF8HP70 O-Ringed End Plug Kit 35740-30K
  • 845RE, ZF8HP45, ZF8HP55, ZF8HP70 O-Ringed End Plug Kit 35740-30K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected. Port configurations may change due to variations of casting channels.

845RE, ZF8HP45, ZF8HP55, ZF8HP70 O-Ringed End Plug Kit Vacuum Test Locations
845RE, ZF8HP45, ZF8HP55, ZF8HP70 O-Ringed End Plug Kit Vacuum Test Locations