The Gear Box Transmissions, Inc
Muncie Parts


Muncie Master Overhaul Kit

The ultimate Master rebuild kit for Muncie transmissions.  Kit includes:

$265.00


Muncie Overhaul Kit 1966-74

Complete overhaul kit for Muncie 4 speed transmissions, 1966-1974.

From $106.95

Muncie Heavy Duty Competition Overhaul kit 66-74

Heavy Duty Competition overhaul kit for Muncie 4 speed transmissions, 1966-1974.

Also available with front nut wrench and/or cluster pin.

From $157.37


Muncie Overhaul Kit with Wrench 1966-74

Complete overhaul kit & Front retaining nut wrench for Muncie 4 speed transmissions, 1966-1974.

$121.95


Muncie Overhaul Kit with Cluster Pin 1966-74

Muncie 66-74 overhaul kit with cluster pin.

$123.95


Muncie Overhaul Kit with Nut Wrench & Cluster Pin 1966-74

Muncie 66-74 overhaul kit with input nut wrench and cluster pin.

$136.95

Muncie Overhaul Kit 1963-65

Complete overhaul kit for Muncie 4 speed transmissions, 1963-1965.

$106.95

Muncie Overhaul Kit with Cluster Pin 1963-65

Muncie overhaul kit 1963-65 with cluster pin

$123.95

Muncie Overhaul Kit with Cluster Pin and Nut Wrench 1963-65

Muncie overhual kit 1963-65 with cluster pin and front retaining nut wrench.

$136.95


Muncie Front Bearing Upgrade Kit

This kit will enable you to upgrade your Muncie front bearing to the much stronger & more durable USA Made M6307NR Max bearing or a Japanese made Nachi sealed bearing. This will replace the narrower, less durable standard front bearing.

From $34.95


Muncie Front Nut Wrench
Front nut wrench-is designed to ensure proper tightening of the front retaining nut on all Muncie M20, M21 & M22 transmissions.

$16.95

Muncie Cluster Pin 7/8" or 1"

Fits all Muncie transmissions with 7/8" or 1" cluster pin. You must specify which pin you need when purchasing.

From $19.95


Muncie Steel Speedo Drive Gear

Muncie steel drive gear with 7 OR 8 teeth. Will fit either the 27 spline or 32 spline output shaft.

From $21.95

Muncie Shift Fork

Muncie shift fork for all Muncie transmissions, M20, M21, M22.

From $22.45


Muncie Reverse Shift Fork

Muncie Reverse Shift fork fits all Muncie transmissions, 1963-74, M20, M21 & M22.

$15.98


Muncie Front Bearing Retainer

Muncie front bearing retainer for all Muncie transmissions, M20, M21, M22.

$26.00

Muncie Oil Slinger

Muncie front bearing oil slinger.

$2.50


Muncie Slider

Slider for all Muncie M20, M21 & M22 transmissions, 1963-1974.

$30.95

Muncie Torque Lock Slider

Torque lock slider for all Muncie transmissions, M20, M21, M22, 1963-1974.

$30.95

Muncie Synchronizer Assembly

Muncie synchronizer assembly fits all Muncie transmissions, 1963 - 1974, M20, M21 & M22.

$71.95


Muncie Synchronizer Hubs 1-2 or 3-4

Muncie synchronizer hubs for the 1-2 or the 3-4 synchronizer. 

From $25.00

Muncie 1st Gear 36 Tooth Auto Gear Italian or South Korean made

Muncie 1st gear with 36 teeth fits all M20 & M 21 Muncie transmissions 1964-74.

From $70.00


Muncie Rollerized 1st Gear

Rollerized 1st gear, 36 tooth, for Muncie M20 & M21 transmissions, 1964-74.

$159.00

Muncie 2nd Gear 30 Tooth Auto Gear Italian or South Korean Made

Muncie 2nd gear with 30 teeth. Fits all M20 & M21 muncie transmissions.

From $60.00


Muncie 3rd Gear 27 Tooth Auto Gear Italian or South Korean Made

Muncie 3rd gear with 27 teeth fits all M20 & M21 muncie transmissions.

From $55.00


Muncie Input / Main Drive M20 M21

Input / main drive with 10 spline for Muncie M20 or M21 transmissions.

Please specify which input you need when placing your order.

From $99.00


Muncie Cluster Gear M20 M21 FOR 1" or 7/8" cluster pin

Muncie cluster gear for 1963-65 (7/8" cluster pin) or 1966-74 (1" cluster pin) Muncie either M20 or M21.  

From $141.70

Muncie M20 Wide Ratio or M21 Close Ratio Gear Set

New Muncie M20 2.52 Wide Ratio OR M21 2.20 close ratio gear set.

From $409.00


Muncie M22 Rockcrusher Close & Wide Ratio Gear Set

 

New Muncie M22 2.20 close ratio or 2.52 wide ratio Rockcrusher gear set is availabe with either a 10 or 26 spline input. 

You must select whether you need a wide or close ratio & which input spline count, 10 or 26.

From $540.00

Muncie M22 1st gear 36 tooth

1st gear with 36 teeth for all Muncie M22 close ratio transmissions.

$102.00


Muncie M22 Rollerized 1st Gear

Rollerized 1st gear, 36 tooth, for Muncie M22 transmissions, 1964-74. A rollerized 1st gear is a must in high load and high speed applications, such as road racing or circle track racing.
Does not fit Muncie M20 or M21. 

$155.00

Muncie M22 2nd gear 30 tooth

2nd gear with 30 teeth for all Muncie M22 close ratio transmissions.

$89.70

Muncie M22 3rd gear 27 tooth

3rd gear with 27 teeth for all Muncie M22 close ratio transmissions.

$83.20

Muncie M22 Input Shaft 10 or 26 spline

Input shaft for the Muncie M22 transmission. Available in either 10 or 26 spline.

From $128.70

Muncie M22 Cluster Gear

Cluster gear for Muncie M22 transmissions. 

$169.00


Muncie Mainshaft 27 Spline

New Muncie Mainshaft 27 spline.

$135.00


Muncie Mainshaft 32 Spline

New Muncie Mainshaft 32 spline.

$159.00


Muncie Mainshaft 1st Gear Bushing

Fits all Muncie transmissions, 1964-74 M20, M21, & M22. Auto Gear USA made or South Korean made.

This is an upgraded designed sleeve that provides better lubrication between the gear and the bushing.

From $25.23


Muncie Reverse & Idler Gearset, Idler Gear or Reverse Gear

Muncie reverse and idler gear set or individual gears. 

From $35.00


Muncie Reverse Idler Shaft

Muncie Reverse Idler Shaft fits all 1963-74 M20, M21, M22 transmissions.

$18.98


Muncie Mid Plate

Muncie Steel midplate. Will fit all Muncie transmissions, 1963 - 1974, M20, M21, M22.

$91.75


Muncie Tailhousing 27 or 32 spline

This is an all new, re-designed Muncie aftermarket tailhousing manufactured by Auto Gear.

From $185.95


Muncie Super Case

This is the all new, redesigned replacement case for all Muncie M20, M21 & M22 transmissions 1963-74. Please specify pin size when ordering.

From $263.95


Muncie Bushed Side Cover Kit

Muncie bushed side cover kit. Superior quality over the original OEM side cover. 

$136.77


Muncie Detent Levers

Muncie detent levers (2) fits all Muncie transmissions, 1963-74 M20, M21, M22.

$11.50


Muncie Heavy Duty Detent Lever Spring

Heavy duty detent lever spring for all Muncie transmissions, 1963-74, M20, M21, M22.

$3.50

Muncie Reverse Lever Detent Ball & Spring

Ball & spring for Muncie reverse lever detent.

$2.00

Gasket Seal Bushing Kit 27 spline
This is a complete gasket, seal and bushing kit for all Muncie trasmissions, 1963-1974 with 27 spline. Everything is included to reseal a leaking transmission.

$13.50


Gasket Seal Bushing Kit 32 spline
This is a complete gasket, seal and bushing kit for all Muncie trasmissions, 1963-1974 with 32 spline. Everything is included to reseal a leaking transmission.

$16.00


Speedometer Housing

Solid steel speedo housing comes with seal and O ring.

$6.95


Speedo Housing Tab & Bolt

Tab & bolt for GM Speedo housing. Fits T5, T10, Super T10, Saginaw, Muncie GM applications. Includes metric & American bolt, depending on application.

$3.50


Speedometer Driven Gears

New OEM AC Delco gears are used in Muncie, GM T10, GM Super T10, Saginaw 3 & 4 speed, GM T5, Powerglide, 200 & 350 transmissions.

From $11.00


TransJel Transmission Assembly Lube

TransJel Assembly Lube for all automatic & manual transmissions. Lubricates and holds needle bearings & thrust washers during assembly. Remains smooth and blends with all automatic & manual transmission fluids. One pound tub.

$6.89


Muncie Caged Pocket Bearing with 17 rollers

Caged Pocket bearing with 17 rollers for all 1963-74 Muncie transmissions, M20, M21 & M22.

$6.50


Muncie Front Retaining Nut

Muncie front retaining nut for all 1963-74 Muncie transmissions, M20, M21 & M22.

$5.00


Muncie French Locks

Pair of french locks for the front of all Muncie transmission that secure the four front bearing retainer bolts.

$3.50


Muncie Synchronizer Key & Spring Set

Synchronizer key & spring set for all Muncie transmissions. Includes 3 keys & 2 springs.

$3.00


Muncie Synchronizer / Blocker Ring 1963-65 or 1966-74

Muncie synchronizer / blocker ring will fit either:

From $7.00


Muncie Reverse Lever Tapered Pin

Muncie reverse lever tapered pin for retaining reverse lever shaft & tailhousing.

$1.00


Muncie Front Idler M20 M21 M22

 

Muncie M20, M21 18 tooth front idler. WT297-10

Muncie M22 18 tooth front idler WT 297-10B

From $37.70


Muncie Small Parts Kit 1963-65 or 1966-74

 

Small parts kit for 1963-65 or 1966-74 Muncie transmissions.

From $21.00


Muncie Bearings, Front or Rear

Front or rear bearing for all Muncie transmissions, 1963-74.

From $22.00

Muncie Tailhousing Bushing 27 or 32 spline

Tailhousing bushing for 27 or 32 spline Muncie transmissions.

From $3.50


Muncie Side Cover Seal

One side cover seal for all Muncie transmissions.

$0.90

Muncie Rear Seal 27 or 32 spline

Rear Seal for 27 or 32 spline Muncie transmissions.

From $3.25


Muncie Bolt Kit

Muncie bolt kit includes all bolts for Muncie transmissions. 21 bolts are included.

  • side cover bolts
  • tailhousing bolts
  • front bearing retainer bolts for early & late applications

$7.50

The Gear Box Transmissions, Inc. * Phone 734-793-0727

* Fax 734-793-0729