ZF6HP21/28/34
NOTE: To identify between ZF6HP19/26/32 (Gen. 1)
and ZF6HP21/28/34 (Gen. 2) valve bodies, refer to ZF
identification guide found online at www.sonnax.com.
TIME TESTED INDUSTRY TRUSTED
(Generation 2)
Zip Kit
ZF6-GEN2-ZIP
1 Automatic Drive P.O. Box 440 Bellows Falls, VT 05101-0440 USA
(800) 843-2600 (802) 463-9722 F: (802) 463-4059 www.sonnax.com
ThIs Sonnax kit also is available,
see www.sonnax.com for details.
*These parts fit both M-Shift and E-Shift valve bodies unless otherwise noted.
10
11
Q UIRE
8 95740-66K
95740-72K
11
Helps cure:
Low converter pressure/lube failure
Overheating
Oversized Clutch A
& Clutch E Control
Valve Kit Fits Either of 2 Locations
E
NOTE: Install
spring inboard.
Helps cure:
Flare upshifts/downshift bind-ups
Pressure control out-of-range codes
Note: 95740-66K requires tool kit F-95740-TL66,
95740-72K requires tool kit F-95740-TL72 & they
both require the VB-FIX reaming fixture.
Helps cure:
Harsh lockup apply & release
Excessive TCC slip, RPM & related codes
Note: Requires tool kit F-95740-TL5
& the VB-FIX reaming fixture.
E-Shift,
Upper Valve Body
9 95740-74K
M-Shift Only
Oversized Shift Valve 3 Kit
Helps cure:
Burned D1 brake
Harsh reverse engagement
12
TOOL
Q UIRE
95740-75K
E-Shift Only
Oversized Position Valve Kit
Helps cure:
Burnt A, B & E clutches
Various shift complaints
E-Shift,
Lower Valve Body
Note: Requires tool kit F-95740-TL73
& the VB-FIX reaming fixture.
TOOL
Helps cure:
Converter overheat, low TCC
release pressure
Excessive TCC slip/cycling RPM
Q UIRE
Note: 95740-74K requires tool kit F-95740-TL74,
95740-75K requires tool kit F-95740-TL75 & they
both require the VB-FIX reaming fixture.
4 95740-29K
Pressure Regulator Sleeve
10 95740-15K
Valve Body Accumulator Set of 7
Piston & Spring Kit Fits 7 Locations
11
Helps cure:
Harsh/Erratic line pressure
Broken parts
3
TOOL
Q UIRE
6 95740-64K
Oversized Solenoid
Pressure Regulator Valve Kit
E
Q UIRE
Helps cure:
Delayed/No reverse
Poor shift quality
Helps cure:
Gear ratio/solenoid codes, wrong gear starts
Delayed engagements
Note: Requires tool kit F-95740-TL69
& the VB-FIX reaming fixture.
Note: Requires tool kit F-95740-TL17
& the VB-FIX reaming fixture.
11
5
11
TOOL
5 95740-69K
Oversized Pressure
Regulator Valve Kit
Q UIRE
TOOL
3 95740-73K
Oversized Bypass
Clutch Control Valve Kit
Q UIRE
Q UIRE
TOOL
E-Shift Only
TOOL
Note: Requires tool kit F-95740-TL71
& the VB-FIX reaming fixture.
2 95740-05K
Oversized Converter
Release Regulator Valve Kit
M-Shift Only
Helps cure:
Delayed/Harsh forward engagement
Flare/Neutral on 5-4 downshift
TOOL
1 95740-71K
Oversized Lubrication
Control Valve Kit
7 95740-28K
Clutch A & E Control
Set of 2
Fits 2 Locations
Boost Valve Kit
2013 Sonnax Industries, Inc.
The Sonnax products listed here may be protected by one or more patents, or be patent pending.
11
Helps cure:
Firm up/downshift and/or engagement
Erratic EDS solenoid control
11 95740-27K
2 Large & 6 Small Plugs
12 95740-30K
7 Plugs (Internal)
O-Ringed End Plug Kits
Helps cure:
Soft/Inconsistent shift feel
