ZF

ZF6HP28 Transmission

Tech Resources View all Transmissions

Internal

"A" Drum Rear Bushing 95030-04

Fits 1.967" (49.97mm) dia. shaft journals only.

Bushing Style: Precision
Material: Bimetal
Housing Bore: 2.088"
Shaft Dia.: 1.967"
Width: 0.307"

Helps cure:

Bushing wear
Bushing failure

Bushing Kit 95030-26K

Fits units with input shaft bushing journal diameters of 1.022" (25.97mm) & 1.180" (29.96mm).

Bushing Style: Precision
Material: Bimetal

Helps cure:

E Clutch burned
B Clutch burned
Gear ratio & solenoid codes
Bushing wear
Bushing failure

Input/Output Shaft Bushing 95030-05

Fits units with .669" (16.98mm) dia. shaft journals only.

Bushing Style: Precision
Material: Bimetal
Housing Bore: 0.788"
Shaft Dia.: 0.669"
Width: 0.393"

Helps cure:

Bushing wear
Bushing failure
Ratio codes
B Clutch burned

Rear Stator Support Bushing 95030-02

Fits 1.180" (29.96mm) dia. input shaft journal only.

Bushing Style: Precision
Material: Steel-backed alloy Bi-metal
Housing Bore: 1.300"
Shaft Dia.: 1.180"
Width: 0.697"

Helps cure:

E Clutch burned
Gear ratio & solenoid codes
Bushing wear
Bushing failure

Sun Gear Shaft Bushing 95030-06A

Fits units with .991" (25.17mm) shafts only.

Bushing Style: Precision
Material: Bimetal
Housing Bore: 1.103"
Width: 0.394"
Shaft Dia.: 0.991"

Helps cure:

B Clutch burned
Bushing wear
Bushing failure
Ratio codes

Sun Gear Shaft Bushing 95030-06

Fits units with .952" (24.17mm) dia. shaft journals only.

Bushing Style: Precision
Material: Bimetal
Housing Bore: 1.063"
Width: 0.393"
Shaft Dia.: 0.952"

Helps cure:

B Clutch burned
Bushing wear
Bushing failure
Ratio codes

Pump

Rear Stator Support Bushing 95030-01

Fits 1.022" (25.97mm) dia. input shaft journal only.

Bushing Style: Precision
Material: Steel-backed alloy
Width: 0.590"
Housing Bore: 1.142"
Shaft Dia.: 1.022"

Helps cure:

E Clutch burned
Gear ratio & solenoid codes
Bushing wear
Bushing failure

Valve Body

Accumulator Piston Kit 95740-15K

Also fits Ford CFT23.

Helps cure:

Downshift clunk
Firm shifts
Erratic EDS solenoid control and/or EDS codes

Clutch A & E Control Boost Valve Kit 95740-28K

Sevices 2 bores

Helps cure:

5-4 Flare
5-4 Neutral
No 4-5
VFS 1/A solenoid control code
Delayed Forward
Harsh Forward

O-Ringed End Plug Kit 95740-27K

Helps cure:

Inconsistent shift quality

O-Ringed Internal End Plug Kit 95740-30K

Helps cure:

Inconsistent shift quality

Oversized Bypass Clutch Control Valve Kit 95740-73K

ZF valve name: WD-V

Helps cure:

TCC codes
Excess TCC slip RPM & related codes
Low converter pressure
Overheated converter
Flare shifts
Harsh shifts
Rough idle in Reverse

Tooling:

F-95740-TL73
VB-FIX

Oversized Clutch A & Clutch E Control Valve Kit 95740-72K

This kit fits either clutch A or E control bore locations in E-shift versions of ZF6HP21/28/34 (Generation 2) valve bodies only. For M-shift versions, Sonnax offers 95740-66K.

Helps cure:

Coastdown Neutral
Downshift bind-ups
Harsh downshifts
Flare shifts
Pressure control out-of-range codes

Tooling:

F-95740-TL72
VB-FIX

Oversized Clutch A & Clutch E Control Valve Kit 95740-66K

This kit will fit in either clutch A or clutch E control bore locations in M-shift versions of ZF6HP21/28/34 (Gen. 2) valve bodies only. For E-shift versions, Sonnax offers 95740-72K.

Helps cure:

Coastdown Neutral
Flare shifts & bind-ups
Harsh downshifts
Pressure control out-of-range codes

Tooling:

F-95740-TL66
VB-FIX

Oversized Converter Release Regulator Valve Kit 95740-05K

OE valve name: WK-V

Helps cure:

Excess TCC slip RPM & related codes
Harsh TCC apply & release
Low TCC release pressure
Rough idle in Reverse
Harsh downshifts
Flare shifts
Overheated converter

Tooling:

F-95740-TL5
VB-FIX

Oversized Lubrication Control Valve Kit 95740-71K

ZF valve name: SCHM-V

Helps cure:

Bearing failure
Bushing failure
Planetary failure
Lube failures
Low converter pressure
Overheating
TCC codes & concerns
Rough idle in Reverse

Tooling:

F-95740-TL71
VB-FIX

Oversized Position Valve Kit 95740-75K

This kit fits E-shift versions only of the ZF6HP21/28/34 (Generation 2) and ZF6HP19/26/32 (Generation 1) valve bodies with an 053 separator plate.

Helps cure:

Shift concerns
A Clutch burned
B Clutch burned
E Clutch burned

Tooling:

F-95740-TL75
VB-FIX

Oversized Pressure Regulator Valve Kit 95740-69K

ZF valve name: SYS.DR-V

Helps cure:

Poor shift quality
Low line pressure
Flare shifts
High line pressure
Harsh shifts
Burnt converter
Delayed Reverse
No Reverse
TCC slip

Tooling:

F-95740-TL69
VB-FIX

Oversized Solenoid Pressure Regulator Valve Kit 95740-64K

ZF valve name: DR.REO-V

Helps cure:

Delayed engagement
Flare shifts
Harsh downshifts
Neutral shifts
High line pressure
Harsh upshifts
Wrong gear starts
Gear ratio & solenoid codes
TCC slip

Tooling:

F-95740-TL17
VB-FIX

Pressure Regulator Sleeve 95740-29K

Helps cure:

Erratic line pressure
Broken parts due to excessive line pressure
High line pressure
Restricted converter/lube flow

Solenoid Test Manifold Kit 95430-VTK

Tooling:

VACTEST-01K

Valve Body Separator Plate 95740-065

Use the ZF6 Valve Body Separator Plate Application Chart to determine which plate is required. The plates are not specific by transmission model, but rather by valve body code and also by the stamped number. OE Valve Body Codes A065 & B065

Helps cure: