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Transmission ID Guide
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GM RWD Transmission Parts
   200, 200C Transmission Parts
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     Transmission kits
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Makco Distributing Kit Component Guide

Deluxe Kits (Super) - Includes: overhaul kit, friction clutch plates, standard steel plates, filter, band, modulator (if required), bushing kit (or popular bushings) & sometimes popular washers.

Master Kits (w/ Steels) - Includes: overhaul kit, friction clutch plates & standard steel plates.

Banner Kits (w/o Steels) - Includes: overhaul kit & friction clutch plates.

Overhaul Kits (no Clutches) - Includes: paper gaskets, O rings, lip seals, metal clad seals and sealing rings.


>>>>>Click here for Transmission Illustration<<<<<

ST300 Transmission Parts
Automatic Transmission Parts


Transmission kits Image Price    
274002 Overhaul Kit, ST300 1964-69,
…Basic overhaul kit includes, paper gaskets, O rings, lip seals, metal clad seals and sealing rings.
  $ 39.69  
274004 Banner kit, ST300 1964-69, Pontiac 2 speed
Includes: overhaul kit, friction clutch plates
  $ 71.66  
274006 Master kit, ST300 1964-69, Pontiac 2 speed
Includes: overhaul kit, friction clutch plates & standard steel plates
  $ 90.41  

Bands Image Price    

Bushings Image Price    
44034 Bushing GM Pump *Most popular large
350 series, 400, PG, 425, 325 300 (Not for 200 or 700 series)
  $ 1.47  
44066 Bushing, Tail Housing
BW1372, NP207, NP231, NP233, NP242, NP247, NP249 Bushing, Tail Housing (27 Spline)
  $ 1.62  
274030 Bushing Kit, ST300

  $ 7.42  

Clutch plates Image Price    
44114 Friction, 350 series, Alum PG, Low / Reverse
.098, Also 300 2 speed 1964-69 …… Common brand - Borg Warner
  $ 2.72  
A44114HP Friction, PG / 350 series, Low / Reverse, High Performance
Red Eagle High performance, Great for Street & Strip use …… Common brand - ALTO
  $ 5.99  
114106 Friction, Powerglide / 300, High clutch drum, 62-73

  $ 3.80  
114126 Steel, Powerglide / 300, High clutch drum, 62-73
0.07
  $ 1.09  
114130 Steel, Powerglide, Reverse

  $ 2.99  
114139 Steel Module, Powerglide,
Standard set of steel plates
  $ 24.70  
114126BK Steel, Powerglide / 300, High clutch, .060
.060, Kolene, Thin plates for adding additional clutchs
  $ 9.05  
114126C Steel, Powerglide / 300 High clutch, .070
.070, Kolene
  $ 2.91  
114130K Steel, Powerglide / 300, Reverse KOLENE *Out of stock
*Out of stock
  $ 4.68  
A114119HP Friction module, Powerglide / 300, High performance
High Performance Alto Red Eagle, Standard .098 thickness plates
  $ 64.28  

Filters Image Price    
274010 Filter, ST300
*Email for availability
  $ 42.24  

Gaskets & O rings Image Price    
44371A O-Ring, GM / Ford / Chrysler Filler tube
Various years and models, Most popular O ring
  $ 0.22  
274300 Gasket, ST300 Pan, OE type Cork gasket *Email for availability
*Email for availability
  $ 2.15  
274300F Gasket, ST300, Updated Fiber gasket *Email for availability
*Email for availability
  $ 6.99  
274310 Gasket, ST300, Front pump

  $ 0.98  

Metal Clad Seals Image Price    
44070 Seal, Front, Most GM large pump seals
400, 425, 350 series, Allum PG, 300, 325
  $ 1.45  
44072 Seal, Linkage, Most GM except PG
400, 425, 350 series, 300, 325, 180, 4L80E, 200, 2004R
$ 0.57  
44074 Seal, Rear NP249
NP205, NP207, NP208, NP231, NP233, NP241, NP242, NP243, NP249 Seal, Rear (Red w/o Boot) Flanged
$ 0.90  
44078A Seal, Spedo Inner seal WITH spring, GM / Chrysler
Inner seal, mainly used with Steel Shafted spedo gears
$ 0.82  
44078X Seal, Spedo Inner Seal, GM / Chrysler
Soft rubber type, uses retaining ring
$ 0.30  

Modulators Image Price    
44160R Modulator: 350 / 400 Single RED stripe adjustable
Most popular GM 350, 400, 425, 300
$ 9.41  

Solenoids Image Price    

Torque converters Image Price    
B1A Converter, 350 BOP non-lu , Uses 3 short bolts
12 inch Diameter, without gear, without shroud, 1.703 inch pilot 3 square mounting lugs, no bushing in stator
Not for use in variable pitch applications

BPO applications
  $ 114.61  

Miscellaneous Items Image Price    
A44839 Transmission MAGNET, Square
Magnet fits in most pans
Traps fine metal shavings
Approx 1" L x 1" W
$ 0.98  
2000 Mount, GM RWD Universal transmission
Replaces most single stud or two hole mounts from 1955 to 1996.
3 bolt holes on mount. Use bolt in center hole to replace center stud mount.
Use 2 out side bolt holes to replace 2 bolt type mounts.
Wide notched base with elongated bolt holes will fit the narrow 350, 200, 700R4 and wide base 400 transmissions.
Will Not replace Offset type mounts
$ 2.96  
M463D GM Universal RWD dust cover
Fits 90% of GM RWD automatic transmissions from 1965-1995
$ 10.97  
M463SA Ground strap, 14 inch long
Missing or bad ground straps can cause many problems.
A must check item on every rebuild.
$ 2.04  
M463SB Ground strap, 42 inch long
Missing or bad ground straps can cause many problems. A must check item on every rebuild
$ 5.24  
A44839B Transmission MAGNET, round
Round, thick (.250" +-) Magnet fits in most pans to trap fine metal shavings
$ 0.87  
M465SC Smart Blend Synthetic Transmission Assembly Lubricant
SMART BLEND Synthetic Transmission Assembly Lubricant is the highest quality synthetic lubricant available for automatic or manual transmissions assembly. SMART BLEND assembly lube provides superior lubrication during the assembly process, while providing the proper tackiness required for assembly. SMART BLEND is clear and will prevent misdiagnosing leaks. It’s compatible with all transmission fluids (mineral or synthetic). SMART BLEND ensures the transmission is assembled to last and will not clog filters.
  • Synthetic formula provides superior protection during start up
  • Compatible with Synthetic or Mineral oil base ATFs unlike other products
  • Dissolves quickly at operating temperatures
  • Maintains tackiness during warm temperatures
  • Clear formula eliminates misdiagnosing leaks
  • Smart Blend #5500 16oz container
  • $ 6.95  

    Tools Image Price    
    T-0015 Tool, LIP Seal installer
    Universal Transmission - Lip Seal Installer. Helps to roll most lip seals in without damage.
    $ 28.12  
    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.
    $ 15.53  
    T-0280-C Tool, Bushing cutting chisel
    Cuts using the Curl Cut method. Also known as a Tailpipe cutter.
    $ 29.22  
    Caliper Electronic Digital Caliper 6" or 150mm -- On Special!
    Measurement in both SAE (inch) or Metric (mm) with conversion
    Measure range: 0 - 6" (0 - 150mm)
    Measurement types: internal dimension, external demension, depth and steps
    LCD Display
    Resolution: 0.0005"/0.01mm
    Accuracy: 0.001"/0.02mm (< 4"/100mm measurement)
    Repeatability: 0.0005"/0.01mm
    Maximum measuring speed: 60"(1500mm)/sec.
    Measuring system: linear capacitive
    Working temperature: 41 - 104F (5 - 40C)
    Influence of humidity: Not important under 80% of relative humidity
    Power: One 1.5V SR44 button Cell (included)
    Brand New
    Generic, non-branded
    $ 38.58  


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    Makco Transmission Parts - 4255 Bryson Blvd., Florence, AL 35630
    Phone 256-767-2840 - FAX 256-767-2841
    Do not copy or distribute any pictures or data from this web site without our written permission.
    Copyright 2010 Makco Transmission Parts
    Makco Transmission Parts customers may use our web site for purposes of placing orders with Makco Transmission Parts but no permission is granted to any customer or other individual or entity to make use of the web site, data, part numbers, descriptions or prices to compete with Makco Distributing, Inc. in any way. This site and all its contents are the proprietary property of Makco Transmission Parts .


    We recommend that these transmission parts and accessories are installed by an automotive professional, with the proper tools and training.
    These parts are for professional use, these are not retail packaged products.
    Please go to the Sales Information page and read our Limited warranty and Company policy before you order.
    Parts that are pre-packaged and sealed are NOT RETURNABLE once they are opened.
    Errors in description, photography, price, or typographical errors are subject to correction.
    You must be 18 or older to order from this site.


    Please visit some of our partner websites that Makco Marketing, Inc. has designed.
    www.kitchen-mart.com offers a wide assortment of kitchen products.
    Spice Racks, Carousel Spice Racks, Magnetic Spice Racks, Stainless Steel Spice Racks, Cereal & Snack Dispensers, Kitchen Utensils and Cutting boards.
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