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Solenoid Identification

Duty solenoid “B”

This solenoid
causes no for-
wards, slips for-
ward or slide
bang forward
when bad. Part #
31939AA091

#3 Low clutch
timing solenoid

Duty solenoid “A”

Duty solenoid “D”

2-4 brake timing NO # 2 solenoid

NO # 1 solenoid

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 Valve Body Sections

Upper valve body

Middle valve body Lower valve body

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 Valve Body Bolts

Bolts are shown in actual size.

.663” 9 pieces

1.763” 5 pieces

1.975” 2 pieces
Silver with hat washer
all other bolts are gold.

2.640” 11 pieces
One with wire clip.

3.078” 2 pieces
With hat washers.

3.391” 6 pieces

Note: Bolts with hat washers are used at solenoid locations.

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 .663” 3.391”
.663”
.663”

Reamer Bolt
1.763

.663”
3.391”
.663”
3.078”
1.763
3.391”
2.640” .663”

2.640” 2.640”

3.391” 3.078”
1.975”

.663”

1.975” 3.078”

1.763 3.078”

1.763 2.640”
Reamer Bolt .663” 2.640”
.663”

3.391” 2.640” 2.640” 3.391”

4
 2.640”

1.763

2.640”

2.640”

2.640”

5
Filter Screen

6
3.310” Reamer bolt

3.310” Reamer bolt

7
Temperature sensor

3.310” Reamer bolts 2 pieces

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 1.815” x .628” x .088”

1.855” x .427” x .062”

High clutch accumulator piston “B”

Accumulator piston air bleed.

3 pieces indicated at “X” locations.

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 Upper Valve Body

X
Install four .215” steel
balls at ‘B” locations.

X
B

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 2.700” x .907” x .069” 2.716” x .1.062” x .065”

High clutch accumulator piston “A”

2.700” x .907” x .069” 2.716” x .1.062” x .065”

Low clutch accumulator piston

2.700” x .907” x .069” 2.716” x .1.062” x .065”

2-4 accumulator piston “A”

1.815” x .628” x .088”

2-4 accumulator piston “B” 1.855” x .427” x .062”

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12
 Upper Separator Plate

.833” bolts 3 pieces

Hold down plates

13
Middle Valve Body

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 .037” washer
.563”
.593”
1.386” x .565” x .038”

Pressure reg. plug Pressure reg. valve

1.054” x .565” x .038”

Reverse inhibit valve

Accumulator control valve “B”

.840” x .356” x .025”

.388” .364”
.900” x .270” x .021”

2-4 brake timing valve “A”

2-4 brake timing valve
2-4 brake timing valve “B”
Be careful sleeve will install in up-
side down. Notice valve land sizes.
.804” x .251” x .024”

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 B

B
Install six .215” check
balls at the “B” locations

B B B

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 1.352” x .357” x .055”

Torque converter reg. valve

Hold plug

1.565” x .411” x .031”

Pressure modifier valve

1.100” x .352” x .026”

Roll pin installs from
other side of VB.

.606” x .430” x .027”

Be careful no to install valve

Accumulator control valve “A” and sleeve upside down.

.364” .388”
.764” x .274” x .019”

Low clutch timing valve “A” Low clutch timing valve

.801” x .274” x .019”

Low clutch timing valve ‘B”

.995” x .352” x .031” Shift valve “B”

.995” x .352” x .031” Shift valve “A”

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Lower Separator Plate

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 .604”
.313”
.805” x .474” x .035”

Lockup control
Lockup control plug

1.416” x .382” x .067”

Throttle accumulator piston “A”

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Lower Valve Body

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 1.423” x .382” x .067”

Modifier accumulator piston

.343” steel line pressure relief ball

2.684” x .378” x .063”

Hole in valve

Pilot valve 1.206” x .354” x .044

Manual Valve

1.145” x .394” x .063”

Throttle accumulator piston “B”

1st reducing valve

.993” x .264” x .029”

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RatioTek ™
Valve Body Kits
RT-4ATAXLE
Fits: Subaru 4-ATAXLE 1998-2007
4 Speed AWD (EC8 Type)
Provides quick clean shifts and more
converter clutch holding power.

RT-4ATAXLE-HD
High Performance
Fits: Subaru 4-ATAXLE 1998-2007
4 Speed AWD
Provides quick clean shifts and more
converter clutch holding power.
Great for boosted turbos and NOS.

Easy to Install - Low Cost - Great Results