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TH425
Automatic Transmission Parts


Click here for important info on our Transmission Rebuild Kits
Transmission kits Image Price    
34006G Master kit, 425 1966-78
Includes: overhaul kit, friction clutch plates & standard steel plates
  $ 105.48  
34004G Banner kit, 425 1966-78
Includes: overhaul kit, friction clutch plates
  $ 90.65  
34002G Overhaul kit, 425, 1966-78, Cork pan gasket
…Basic overhaul kit includes, paper gaskets, O rings, lip seals, metal clad seals and sealing rings. Common vender / brand TransTec
  $ 66.01  
Bands Image Price    
B34024E Band 400 / 425 / 475 / 3L80E / 4L80E Rear
New band, BorgWarner … Low / Reverse new updated design 1997-UP Will replace all 1965-up
$ 31.17  
N34022 Band 400 / 425 / 4L80E Front 1964-98
New band, value import … 1 inch wide
On 4L80E Used w/ Front Servo Piston w/ 2.530" Pin
$ 6.89  
R34024E Band, 400 / 425 / 4L80E Rear (Relined)
RELINED Band, Rear (Reverse) (Retros All) (65-Up)
$ 18.29  
Bushings Image Price    
34030 Bushing kit , (X) 400

  $ 25.48  
44034 Bushing GM Pump *Most popular large
350 series, 400, PG, 425, 325 300 (Not for 200 or 700 series)
  $ 3.34  
34044 Bushing 400 center support .
Single groove design
  $ 7.91  
Clutch plates Image Price    
34104 Friction, 400 / 425, Intermediate clutch, .080
1965-up …… Common brand - Borg Warner
  $ 4.16  
34106 Friction, 400 / 4L80E, Forward / Direct, .080
Smooth …… Common brand - Borg Warner
  $ 3.74  
34106G Friction, 400, Forward / Direct, Radial groove
…… Common brand - Borg Warner
  $ 3.83  
34106HD Friction, 400, Forward / Direct, .080,
GREEN Graphitic Waffle, (RAYBESTOS) …… Common brand - Raybestos
  $ 8.27  
34124 Steel, 400 / 425, Intermediate, .100 (FLAT)
1964-up …… Common brand - ALTO
  $ 4.92  
34125 Steel, 400 / 4L80E, Intermediate, .070 (WAVED)
1964-up …… Common brand - ALTO
  $ 4.97  
34128 Steel ,400 / 425 / 4L80E, Forward, .077 (FLAT)
1964-up …… Common brand - ALTO
  $ 3.53  
34126A Steel, 400 / 425 / 4L80E, Direct, .090
1964-up …… Common brand - ALTO
AT540 FWD & 4th range - order 5 - 10 as needed
  $ 3.62  
34126B Steel, 400 / 425 / 4L80E, Forward / Direct, .060 (Commercial)
Thin, used to add extra clutches to drum …… Common brand - ALTO
  $ 10.45  
34126AK Steel, 400 / 425 / 4L80E, Forward / Direct, .090, KOLENE
Kolene coated …… Common brand - ALTO
  $ 5.97  
34128B Steel, 400 / 425 / 4L80E, Forward, .077 (FLAT) KOLENE***SEE 34128K***
1964-up, Kolene coated …… Common brand - ALTO. 34128K
  $ 9.43  
Filters Image Price    
A34010G Filter, 425

$ 29.53  
Gaskets & O rings Image Price    
34300G Pan Gasket: 425 Bottom pan
OE type Cork gasket
$ 3.69  
34305G Gasket, 425 Final Drive to Case

  $ 4.09  
34311G O-Ring, 425 / 325 / 3254L front Pump

  $ 2.38  
44371A O-Ring, GM / Ford / Chrysler Filler tube
Various years and models, Most popular O ring
$ 1.4  
Sprags Image Price    
A34652 Sprag, 400 intermediate (8 Roller Type)
Spring & roller type, 1972-up
$ 14.51  
A34652A Sprag, (Z) 400 / 4L80E intermediate, (34 element CAM TYPE)
On 400's only fits the early type drums.
$ 64.82  
A34652B Sprag, 400 / 4L80E Intermediate (16 Elements - CAM type)
Fits 1965-1977 drums
$ 38.66  
A34654 Roller clutch, FMX / AOD / E/ 400 / 4L80E LOW
LOW / REAR sprag, Spring & roller type
Also fits 4L80E 91-E95 only
$ 11.62  
Metal Clad Seals Image Price    
44070 Seal, Front, Most GM large pump seals
400, 425, 350 series, Allum PG, 300, 325
$ 2.72  
44072 Seal, Linkage, Most GM except PG
400, 425, 350 series, 300, 325, 180, 4L80E, 200, 2004R, 2ML70
$ 2.44  
Modulators Image Price    
44160R Modulator: (Z) 350 / 400 Single RED stripe adjustable
Most popular GM 350, 400, 425, 300
$ 13.86  
Solenoids Image Price    
34444 Connector, 400, 1 Prong EARLY
IF Available!! 1964 …. Common brands - various
$ 4.96  
34444A Case connector, 400 1 Prong, 1968-UP
…. Common brands - various
$ 2.97  
34444B Case connector, 400, 2 Prong w/ Variable Pitch (Large OD) 1965-67
As available!!
$ 5.18  
34444C CONNECTOR, 400 2 PRONG
2 Prong w/OUT Variable Pitch
$ 5.16  
Thrust Washers & Bearings Image Price    
34200 Thrust washer kit, 400
Flat thrust washers
  $ 38.34  
34201A Bearing kit, 400, 3 bearings & 6 races
4L80E some models
  $ 22.67  
Valve body kits Image Price    
T34165G TRANSGO SHIFT KIT, 425 1966-78
Corrects/Prevents/Reduces Soft And/Or Late Shifts; 3rdClutch Burn-Up; Rough 1-2; Excessive Passing Gear
$ 34.15  
T-BB100A Accumulator Buddy Kit / Bore B rushes

$ 65.95  
T-BB100 Tool, Bench buddy kit
Superior Bench Buddy (Superior BB100 )
Problem Solver
Impregnated with a special super fine abrasive, Bench Buddy brushes easily remove small burrs and polish the inside of a valve bore with virtually no enlargement of the bore diameter itself. Each Bench Buddy kit features 4 different sized brushes. * Improves the surface finish of a bore by up to 50% * Restore smooth valve operation in seconds * Services bores from 1/4 to 1
$ 54.52  
WE HAVE HELP FOR
TORQUE CONVERTER SHUDDER

Instant Shudder Fixx, 
A concentrated friction modifier formulated specifically for INSTANTLY eliminating torque converter lock-up shudder
Torque converters Image Price    
TC-GM3 Torque converter, 400, 3L80, 425, 475, 325, 350
Diameter - 13”, Pilot - 1.703”, Mount - 3 Pads, Splines - 30
Notes - Approx. Stall 1300-1500
3 Row of Ribs - Fixed Pitch Stator
ALT. PART # B3M
NOTICE: Converters do not qualify for free shipping! Some Converters may require an $80.00 core charge added to order. We will contact you if core charge is required on your converter.
$ 192.49  
Miscellaneous Items Image Price    
A44839 Transmission MAGNET, Square
Magnet fits in most pans
Traps fine metal shavings
Approx 1" L x 3/4" W
$ 1.95  
M463SA Ground strap, 14 inch long
Missing or bad ground straps can cause many problems.
A must check item on every rebuild.
$ 2.96  
M463SB Ground strap, 42 inch long
Missing or bad ground straps can cause many problems. A must check item on every rebuild
$ 5.38  
A44839B Transmission MAGNET, round
Round, thick (.250" +-) Magnet fits in most pans to trap fine metal shavings
$ 2.26  
M465SC Assemblee Goo, Green Transmission Assembly Lube
YOU NEED THIS ON EVERY REBUILD
ASSEMBLEE GOO is formulated for use as an assembly aid and lubricant for virtually any assembly application (including engines!). It provides lubrication and helps facilitate the assembly process, by holding components such as needle bearings and hydraulic seals in place. Simply apply to O-rings, seals, bearings, gaskets, sealing rings, bushings, thrust washers and much more.

Provides your choice of tack strength, firmer (GREEN) great for summer months and lighter tack (BLUE) great for winter months
No water/soapy residue to contaminate new automatic transmission fluid
Dyed green or blue to prevent misdiagnosing leaks
Will not melt at shop temperatures
Not harmful with prolonged skin contact
Will not clog filters
Dissolves quickly at operating temperatures
Proprietary green formula contains rust inhibitor
Compatible with all transmission fluids

*VARIOUS BRAND*
$ 9.02  
Tools Image Price    
T-0015 Tool, LIP Seal installer
Universal Transmission - Lip Seal Installer. Helps to roll most lip seals in without damage.
$ 33.02  
T-1079 Tool, Double pointed scribe, 9 1/4 long
Heat treated high carbon steel picks. Removes O rings, gaskets, springs and great for removing snap rings.
Straight and 90 degree angle points.
$ 4.85  
T-0280-C Tool, Bushing cutting chisel ***NOW AVAILABLE!!***
Cuts using the Curl Cut method. Also known as a Tailpipe cutter.
***NOW IN-STOCK! CALL TODAY TO GET YOURS!***
$ 46.49  


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Transmission Parts US - 755 Grand Blvd, Ste. B105-261 Miramar Beach, FL 32550
Phone / Text 1-850-419-1234