Saginaw 4 Speed Chevrolet & GM Manual Transmissions - Buy Factory Direct and Save Money!

See the complete line of products that we offer at www.midwesttrans.com. To speak to a Drive Train Expert or to place an order call toll free 888-824-2012!

Midwest Transmission an Automotive Parts Remanfacturer and Re-builder can Help you with your Saginaw 4 Manual Transmission

Having issues diagnosing problems with your Saginaw manual transmission we can help. We have a large inventory of rebuilt Saginaw Manual Transmissions plus transmission parts. Our factory rebuilt re-manufactured transmissions are dyno tested before leaving the factory, ensuring the highest quality. We offer a no hassle 12 month warranty, performance guaranteed.

saginaw 3 and 4 speed transmissions and parts
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discount on saginaw parts

Quality Saginaw 3 & 4 Manual TransmissionParts the First Time

Below you will find a detailed list that includes complete rebuilt transmissions, bearing rebuild kits with and without synchro rings, seals and bushings, individual bearings, synchro assemblies,sliders, rings, forks, gears, shafts and bearing retainers

Take Advantage of Our Expertise on the Saginaw 4 Manual Transmission

The Saginaw transmission was engineered and manufactured in Saginaw Michigan for the Chevrolet General Motors, vehicles with RPO code M15 utilized the Saginaw 3 speed, you should be able to find a "S" on the passenger side of the case rear cover. RPO code M20 significances the 4 Speed version, this overdrive will have a code of "O". These transmissions have cast iron case and tail housings, each transmission has a 7 bolt side cover, the units are full synchronized and the rings have 30 teeth. . Electric overdrives were used on some 1966-1969 models. The 4 Speed Saginaw has a five step cluster, straight cut reverse gear on the outside of the 1/2 slider with 3 shifter cams in side the side cover.

automatic transmission rebuilt

 

Select this link to see what models that used this 4 Speed transmission.

Free Saginaw Parts Illustration

Below we provide a Saginaw parts illustration to assist you with the correct identification of the parts you need. Select the parts you require from the following list and give us a call.

If you need more information or cannot find the parts you need give us a call, if you would like to save money, ask about our good take out parts (GTO), they are inspected and guaranteed.

Applications Model Years

sm465 bearing rebuild kit

   
Chevrolet & GM Cars 1966-1981
GM Astro and Safari Vans 1985-1986
   

Need Stronger Parts?

Midwest Transmission can Cryogenic Treat any shaft or gear. This cryo treatment will add 30% in component strength. Call 888-824-2012 for a quote.

No hassle 12 month warranty on rebuilt units.

Saginaw 4 Speed Rebuilt Transmissions

Description
Dwg #
Part Number
Your Cost
Rebuilt Manual Transmissions
Rebuilt Transmission 4 Speed GM 66-85 MTGM015
$1200.00
Transmission Core Deposit 66-85
MTGM015C
$350.00

Saginaw 4 Speed Rebuild Kits

Description
Dwg #
Part Number
Your Cost
Bearing Rebuild Kit
Bearing Rebuild Kit (4 speed)
MWT-115
$73.52
Bearing Rebuild Kit W/Syncro 66-87
BK115WS
$125.00

Saginaw 4 Speed Gaslets, Seals, Bushing and Small Parts

Description
Dwg #
Part Number
Your Cost
Seal 3-4 Shift Shaft
71
100281
$1.33
Seal Input
100254
$2.67
Seal Rear
55
8850A
$3.67
Bushing Tail
35008
$10.00
Small Parts Kit
SP301-50
$29.69

Saginaw 4 Speed Bearings

Description
Dwg #
Part Number
Your Cost
Bearings Individual
Bearing Output
106
6306-N
$14.33
Bearing Input
6207N
$12.67
Bearing Main Shaft
6306N
$14.33

Saginaw 4 Speed Syncro Assemblies, Sliders and Rings

Description Dwg # Part Number Your Cos
Hub & Sliders
Slider, 2-3
15
344642K
$69.77
Syncro Assembly
Synchro Assembly 1/2 No Rings
AWT302-80A
$109.33
Synchro Assembly 3-4
2.5
AWT301-2.5
$126.50
Synchro Assembly 1/2, 3/4 No Rings
AWT301-2.5
$126.67
Syncro Rings
Syncro Rings Blockers GM 66-85 1-44
96
100759
$10.40
Synchro Key & Spring Kit (All) res 1 kit per Synchro Assembly)
97
WT301-K
$8.00

Saginaw 4 Speed Shift Forks

Description
Dwg #
Part Number
Your Cost
Forks
Fork 1-2-3-4
60
WT301-22
$21.33

Saginaw 4 Speed Gears

Description
Dwg #
Part Number
Your Cost
Gears
Gear 1ST USED
T318-12
$100.00
Gear 1st (29 T)
12
TRS344581B
$135.64
Gear 2nd (26 T)
21
TRS344582B
$135.64
Gear 2nd 76-79 Main Shaft
WT301-11
$46.67
Gear Idler Reverse
AWT302-10A
$98.67
Gear Reverse Idler
10
AWT302-10A
$98.67
Gear Reverse Main Shaft
WT301-36
$80.00

Saginaw Speed Shafts

Description
Dwg #
Part Number
Your Cost
Shafts
Shaft Input (19 T) 2.86 OD
16
TRSWT301-16A
$73.28
Shaft Cluster (29, 23, 19, 15, 15)
8
AWT302-8B
$373.00
Shaft Counter
8
AWT302-8
$193.33
Shaft Counter R25-21-15-14T
8
WT301-8A
$193.33

Saginaw 4 Speed Bearing Retainer

Description
Dwg #
Part Number
Your Cost
Retainer
Retainer Bearing (4 5/8" Diameter) (Car nly)
6
WT301-6
$34.40

saginaw 3 and 4 speed parts illustration

Minimum order $25.00 Shipping and handling charges will be added.