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Transmission Parts Guide
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MT640
Automatic Transmission Parts


Click here for important info on our Transmission Rebuild Kits
Transmission Rebuild kits Image Price    
101006A Master kit, MT650, 653
Includes: overhaul kit, friction clutch plates & standard steel plates
  $ 609.07  
101006 Master kit, MT640, 643
Includes: overhaul kit, friction clutch plates & standard steel plates
  $ 494.48  
101006D Master kit, MT644 (Phase 1, Phase 2) (72-Up)

  $ 543.55  
101004A Banner kit, MT640 / 643 / 650 / 653
Includes: overhaul kit, friction clutch plates, with VESPEL rings
  $ 419.83  
101004D Banner Kit, MT644 (Phase 1, Phase 2) (72-Up)

  $ 392.32  
101004E Banner Kit, MT654 (Phase 1, Phase 2) (72-Up)

  $ 514.21  
101004 Banner kit, MT640 / 643 / 650 / 653
Includes: overhaul kit, friction clutch plates *NO VESPEL rings
  $ 360.86  
101002 Overhaul kit, MT640 / 643 / 650 / 653, Cork pan gasket
…Basic overhaul kit includes, paper gaskets, O rings, lip seals, metal clad seals and sealing rings. Common vender / brand Precision International
  $ 202.62  
101002A Overhaul Kits, MT640 MT643, MT650, MT653
Includes Armstrong Pan Gasket & Vespel Rings (72-Up)
  $ 188.74  
101002H Overhaul Kits , MT644, MT654
Armstrong Pan Gasket & Vespel Rings) (72-Up)
  $ 190.23  
Filters Image Price    
101010 Filter, MT600 SERIES (ALSO USED AS AT540 UPDATE)
Large Hole Grommet
USE 111495B TO UPDATE AT545
$ 37.82  
A101010 Filter, MT600 SERIES
Large Hoke Grommet - Common brand - Carfel / Offshore
$ 12.82  
101010B Filter, MT600 series with Small Hole Grommet
Small whole suction grommet
$ 41.78  
Metal Clad Seals Image Price    
101070B SEAL, MT600 FRONT PUMP (3.881"OD)

  $ 9.71  
44072 Seal, Linkage, Most GM except PG
400, 425, 350 series, 300, 325, 180, 4L80E, 200, 2004R, 2ML70
$ 1.25  
101080 Seal, Rear Cover 4.751
Allison 640, 740 searies 4.751" OD
$ 9.91  
121074 Seal, ALLISON 1000/2000/2400 REAR 01-UP (ALSO ALLISON 540)
(3.628" OD) Also fits Allison 640 series
$ 5.9  
Bushings Image Price    
101030 Bushing Kit, MT640 / MT643 / MT650 / MT653

  $ 84.33  
101032 Bushing, Converter Cover, MT640/MT643

$ 1.3  
SS29527101 Bushing, Pump TRI METAL 640,643,650,653
SONNAX
  $ 87.78  
101034A Bushing, Pump , AT640/650/653 ALLISON FRONT PUMP BODY 2.530" OD
2.530" OD
$ 170.42  
101034B Bushing, Pump 644/654 2.580" OD
2.580" OD
$ 161.44  
101053 Bushing, Front Planet Carrier 640
Bushing, Front Planet Carrier (Must be finished In place)
  $ 2.78  
101059 Bushing, Low Planetary Carrier, 640
Bushing, Low Planetary Carrier (ID Must Be Finished In Place)
  $ 14.72  
101062 Bushing,Rear Output Shaft, 640
Bushing,Rear Output Shaft (Replaces Bearing In Rear Output Shaft)
$ 5.58  
Gaskets Image Price    
111300 Pan Gasket: AT540 / MT600 series
OE type Cork gasket
$ 3.39  
111300A GASKET, AT540/MT640 PAN ARMSTRONG

  $ 12.25  
34306 Gasket, 400 / 3L80, Governor cover, 1964-UP
Also fits ALLISON AT500 / MT / B600 series
$ 1.27  
111310 Gasket, AT540 Pump to case

  $ 7.86  
111306 Gasket, Governor Cover 540/640 SERIES
Armstrong® brand
  $ 1.96  
111332 AT540 2/3RD CL INNER L/SEAL

  $ 2.45  
111319 Gasket, Power Take Off Cover,
Fits various Allison A540/640 / LT1000, AISIN AS68RC 07-UP
  $ 3.29  
101309 SEAL WASHER FRT PUMP BOLT
(requires12)
  $ 0.53  
101310 GASKET, MT600 FRONT PUMP TO CASE

  $ 3.91  
Miscellaneous Items Image Price    
111414 Switch, Reverse Signal AT540 / 640
Switch, Reverse Signal (Backup Light)
$ 19.25  
111160 Modulator: AT540 MT640 ALLISON
WHITE stripe, Small Can
$ 37.73  
D111160A Modulator, AT545, 640 Large Can *as available
Modulator w/ O-Ring Large Can
  $ 165.89  
D111160B Modulator (Electric Type), AT545, MT640

  $ 294.48  
A44839 Transmission MAGNET, Square
Magnet fits in most pans
Traps fine metal shavings
Approx 1" L x 3/4" W
$ 2.34  
M463SA Ground strap, 14 inch long
Missing or bad ground straps can cause many problems.
A must check item on every rebuild.
$ 3.62  
M463SB Ground strap, 42 inch long
Missing or bad ground straps can cause many problems. A must check item on every rebuild
$ 7.51  
LA-2001K 18 oz. Cooler line cleaner with 5/16 and 3/8 adapter

Always flush the cooling system


Contaminated fluid will stay in the cooling system, this will flush out the system and prevent re-contamination to the transmission!


Life Automotive Products INVENTED, DESIGNED & PATENTED the first aerosol Transmission Cooler Flush product in 1993 utilizing an OEM approved, biodegradable cleaning agent. Trans Flush’s unique design and patented technology have made it the #1 selling cooler and line flusher worldwide. It safely flushes out harmful contaminants (metal shavings and sludge) from the transmission cooler and lines preventing the contaminants from entering a newly installed transmission. Accept No Imitations
  • Prevents Contamination (metal shavings & sludge etc.)
  • Prevents Costly Comebacks
  • Patented High Pressure Cleaner
  • #1 Choice of Professional Mechanics Worldwide
  • OEM & Large Rebuilder Approved Supplier
  • Proven and Used in Millions of Vehicles
    Contains:M465F18 & M465FB

    Click here for a TRANS FLUSH" Cooler line return chart.
  • $ 24.68  
    Hard Parts Image Price    
    111680A Governor (Code # 461) AT545/643
    Governor (Code # 461) Up to 2800 RPM Range (Sonnax) (6885570)
    $ 106.61  
    111680B Governor (Code # 462), AT545/643
    Governor (Code # 462) 3000-3400 RPM Range (Sonnax) (6885571)
    $ 106.86  
    A101578 Hub, Fourth Clutch Driving MT640
    Does NOT fit 644, 654
    $ 65.61  
    Solenoids & Electrical Image Price    
    111414 Switch, Reverse Signal AT540 / 640
    Switch, Reverse Signal (Backup Light)
    $ 19.25  

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    Makco Transmission Parts - 4336 Helton Dr, Florence, AL 35630
    Phone 256-767-2840 - Fax 844-272-9944