Sonnax Ford AX4N Transmission

Remanufactured Valve Body

AX4N Remanufactured Valve Body F088

’94–’98

4F50N, AX4N Remanufactured Valve Body F089

’98–’03

Internal

Forward Planetary Bearing 96003-01

Bearing Style: Roller bearing

Helps cure:

Bearing noise
Bearing failure

Tooling:

96003-MTL

Rear Sun Gear Bearing & Race Assembly 96423

Bearing Style: Enclosed
Material: Hardened Steel
Outer Dia.: 2.800"
Thickness: 0.255"
Inner Dia.: 1.850"

Helps cure:

Bearing noise
1-2, 2-3, 4-5 Flares

Pump

Oil Pump Shaft 96855-02K

Patented design increases oil flow

Helps cure:

Scored shaft

Pump Bearing 96855-01K

'99-Earlier AX4N Fits '99-earlier only.

Outer Dia.: 1.000"

Helps cure:

Bearing noise
Bearing failure

Pump Bearing 96419-01

'00-Later AX4N Fits '00-later only.

Outer Dia.: 1.063"

Helps cure:

Bearing noise
Bearing failure

Pump Cover 96200-01

Material: Aluminum

Helps cure:

Low line pressure & pump volume

Pump Slide Pin 96200-02

Helps cure:

Lost or damaged component

Valve Body (View Valve Body Layout Diagram)

Boost Valve Kit 96201-12K

Fits 3.0 liter 12 valve, O-ring style.

Helps cure:

1-2 Flare
2-3 Flare
2-1 Clunk
Harsh Reverse
Clutch failure
Band failure
Non-adjustable (high) throttle pressure

Boost Valve Kit 96201-08K

Fits all except 3.0 liter 12 valve, factory style sleeve, no O-ring.

Helps cure:

1-2 Flare
2-3 Flare
2-1 Clunk
Harsh Reverse
Clutch failure
Band failure
Non-adjustable (high) throttle pressure

Boost Valve Kit 96201-01K

Fits all except 3.0 liter 12 valve, O-ring style.

Helps cure:

1-2 Flare
2-3 Flare
2-1 Clunk
Harsh Reverse
Clutch failure
Band failure
Non-adjustable (high) throttle pressure

Boost Valve Kit 96201-13K

Fits 3.0 liter 12 valve. Factory style sleeve, no O-rings.

Helps cure:

1-2 Flare
2-3 Flare
2-1 Clunk
Harsh Reverse
Clutch failure
Band failure
Non-adjustable (high) throttle pressure

Bypass Clutch Control Plunger Valve Kit 96206-03K

.486" OE large spool diameter

Helps cure:

Code 628
TCC cycling
TCC surge
No lockup
Lube failures
Excess cooler circuit oil loss

Bypass Clutch Control Plunger Valve Kit 96206-13K

.496" OE large spool diameter

Helps cure:

Code 628
TCC cycling
TCC surge
No lockup
Lube failures
Excess cooler circuit oil loss

EPC Solenoid 86431-A

If supplying a core for your solenoid, please order 86431-A-RRP. If no core available, please order 86431A-C.

Helps cure:

Line pressure instability

Forward Control Valve Kit 96206-07K

Helps cure:

Coastdown Neutral after 4th Gear
No Forward
No 4th
Burnt Forward clutch

Line Pressure Modulator Plunger Valve Kit 96948-05K

Extreme heavy duty, .500" dia.

Dia.: 0.500"

Helps cure:

Intermittent harsh shifts
1-2 Soft
2-3 Soft
Low line rise
Low EPC pressure

Line Pressure Modulator Plunger Valve Kit 96948-01K

.427" dia.

Dia.: 0.427"

Helps cure:

Intermittent harsh shifts
1-2 Soft
2-3 Soft
Low line rise
Low EPC pressure

Manual Valve 96201-05

Lengthened spool diameter

Helps cure:

Delayed Forward
Burnt Forward clutch

Oversized Bypass Clutch Control Valve Kit 96206-05K

Helps cure:

Code P0741
TCC shudder
TCC cycling
Excess TCC slip
TCC apply & release concerns

Tooling:

96206-TL

Oversized Converter Regulator Valve Kit 96201-23K

Works in 2- or 4-spooled OE applications

Helps cure:

Code 628, 741, 744
TCC cycling
Overheating & reduced lube feed
Delayed engagement
Overheated converter
Blued converter
TCC surge
4th Slip
Coastdown Neutral
No 4th

Tooling:

F-96201-TL23
VB-FIX

Oversized Pressure Regulator Valve Kit 96206-10K

Late-style

Helps cure:

Erratic line pressure
Delayed engagement
Pump noise
Pump rotor & cover damage
Overheated converter
Lube failures

Tooling:

96206-TL2

Oversized Solenoid Regulator Valve Kit 96201-21K

Helps cure:

Code 1741, 1744
TCC cycling
No lockup
TCC surge

Tooling:

96201-TL2

Pump Shaft Sleeve 96201-18

Helps cure:

Lost or damaged component

Relief Valve 10000-01K

Low radius

Material: Steel

Helps cure:

Pressure loss
Converter drain back

The Sure Cure® Kit SC-AX4N

Helps cure:

Clutch & band failures
Non-adjustable (high) throttle pressure
1-2 Flare
2-3 Flare
2-1 Clunk
Neutral after 4th
No 4th
Harsh Reverse
No Forward
Delayed engagement
TCC cycling
TCC surge
Code 741, 1741, 1744
TCC apply & release concerns
TCC codes & overheating

Tooling:

96206-TL
96201-TL2
96201-TL3

Case

Stator Support Shaft 96849-01K

Fits '86-'03, Bushing & bearing already installed

Helps cure:

Scored shaft

Stator Support Shaft 96849-02K

Fits '04-later. Bushing & bearing already installed

Helps cure:

Scored shaft

Servo/Band

Servo Pin Bore Sleeve 96872-01K

Helps cure:

3-4 Flare
Burnt OD band
Worn OD servo pin bore in case

Tooling:

S-96872-TL
SERVO-FIX

Other

Tool Kit F-96201-TL23

Tooling:

VB-FIX

Tool Kit 96206-TL2

Tool Kit 96206-TL

Tech Resources

December 12, 2014

Ford AX4N/4F50N Valve Body Layout

January 01, 2013

AX4N Valve Body Identification

Valve Body Xpress

October 31, 2009

Point of No Return - "Point de Non-Retour"

Serge Martin

May 16, 2006

SonnaFlow® Chart AX4N (Normal & Poor)

March 19, 2004

AX4S and AX4N Turbine Speed Sensors

Mike Steen

September 21, 2003

Ford Bypass Converter Clutch Circuits

Gregg Nader