Aston Service Dorset : Transmission
       
      Aston Service Dorset : Aston Martin DB2 + DB2/4 MkI - MkII  
           
    Transmission

  Clutch (Plate J)
  Gearbox Case (Plate K)
  Gearbox and Geartrain (Plate L)
  Rear Axle (Plate M)

  Engine

  Fuel, Cooling + Exhausts

  Suspension + Steering

  Brakes + Pedal Gear

  Electrical + Instruments

  Chassis, Frame, Body, etc.
    For all Parts Catalogues, Workshop Manuals and Instruction Books please follow the link to the technical publications page.

Aston Service Dorset : Transmission


A selection of the most frequently asked for Transmission parts are shown below as they appear in the Parts Book (Part No. 20-43-105), anything that is not there, contact us and we will be happy to advise on stock and availability:




Aston Service Dorset : The Clutch


The clutch was originally a 10" Borg and Beck single dry plate with coil springs, these are no longer available new and have now been replaced with the below diaphragm clutch, far superior and prevents the slippage that occurred with the original.

For further information on what is required to convert and current prices please contact us

Aston Service Dorset : Balance Unit   64-11-753


20-11-702H
  Balance Unit Clutch Assembly 9 1/2"

Release Bearing and Cup Assembly, Required to Convert the 91/2" Clutch Assembly to Fit DB4
         
Aston Service Dorset : Clutch Slave Cylinder   20-33-105   Clutch Slave Cylinder
         
Aston Service Dorset : Release Bearing Standard   20-11-702   Release Bearing and Cup Assembly - Standard

Back to top




Aston Service Dorset : Gearbox


The following is a selection of original replacement gearbox case parts that are available, for anything else that isn't below please contact us


Aston Service Dorset : Top Cover   20-41-129

20-41-223

20-41-125
  Top Cover

Gear Lever Retaining Plate Spring

Inspection Plate
         
Aston Service Dorset : Selector Rods and Stops   20-41-130

20-41-131

20-41-133

20-41-134
  Selector Rod 1st and 2nd Speed

Selector Rod 3rd and 4th Speed

2nd Speed Stop

3rd Speed Stop
         
Aston Service Dorset : Reverse Selector Rod   20-41-132

20-41-139

20-41-135

20-41-141
  Selector Rod Reverse

Reverse Selector

Reverse Stop

Setscrew for Forks
         
Aston Service Dorset : Change Lever   20-41-152

20-41-154

20-41-195

20-41-156
  Change Speed Lever RHD

Change Speed Lever LHD

Special Locknut 5/16" BSF

Gear Lever Retaining Plate
         
Aston Service Dorset : Reverse Operating Lever   20-41-216

20-41-215

20-41-217

20-41-214
  Reverse Operating Lever

Shaft for Reverse Fork

Bolt for Reverse Lever

Reverse Fork
         
Aston Service Dorset : Dipstick Knob   20-41-138

20-41-162

20-41-141

20-41-142
  Fork 3rd and 4th Speed

Dipstick Knob

Setscrew Forks

Detent Spring
         
Aston Service Dorset : Interlock Bushes   20-41-147

20-41-145

20-41-148

20-41-102
  Bush - Interlock and Reverse Stop

Bush - Interlock

Spring - Plunger

Spring Change Speed Lever

Back to top




Aston Service Dorset : Propellar Shaft



The following is a selection of original replacement gear parts that are available, for anything else that isn't below please contact us



Aston Service Dorset : Primary Shaft   20-41-163

20-41-224

20-41-168
  Primary Shaft

Clutch - 3rd and 4th Speed

Retaining Ring
         
Aston Service Dorset : Ball Bearing   20-41-165

690345

20-41-166

114426
  Tabwasher

Ball Bearing

Locknut

Oil Seal
         
Aston Service Dorset : Main Shaft   20-41-170

20-41-240

690335

20-41-174
  Mainshaft - Up to DB4/190

Mainshaft - From DB4/191

Needle Roller, 3mm

Key - For Hub
         
Aston Service Dorset : Clutch and Synchro Spring   20-41-224

20-41-168

20-41-176


20-41-244
  Clutch - 3rd and 4th Speed

Retaining Ring

Synchro Spring - 1st and 2nd Speed - Short

Saddle
         
Aston Service Dorset : Synchro Cone   20-41-225


20-41-178

20-41-180
  Synchro Cone - 1st, 3rd and 4th Speed

Sliding Clutch - 3rd and 4th Speed

Spacing Bush
         
Aston Service Dorset : Synchro Spring   20-41-230


20-41-244

20-41-183
  Synchro Spring - 3rd and 4th Speed - Long

Saddle

Distance Piece - 1st and 2nd Speed
         
Aston Service Dorset : Gear 2nd Speed   20-41-229

20-41-226

20-41-172

20-41-185
  Synchro Cone - 2nd Speed

Gear - 2nd Speed

Distance Piece, 3rd and 4th Speed

Hub - 1st and 2nd Speed Clutch
         
Aston Service Dorset : Speedometer Gear Wheel   42-41-191


690345

20-41-192

115757
  Speedometer Gear Wheel - Wide Ratio - Overdrive

Ball Bearing

Retaining Washer - Flange

Oil Seal - for Coupling Flange

         
Aston Service Dorset : Front Support Bush   690336

20-41-204

690338

20-41-205
  Circlip, External 1 3/4"

Rollers (88 Rollers per Cage)

Needle Thrust Bearing

Front Support Bush
         
Aston Service Dorset : Reverse Shaft   20-41-208

20-41-210

20-41-211

20-41-213
  Reverse Shaft

Thrust Washer

Rear Bearing Bush

Distance Piece

Back to top




Aston Service Dorset: Remote Gear Mechanism


Below is a selection of original parts that we have in stock for the Rear Axle, normally in a ratio of 3.54:1 (except USA), alternatives were offered in Series I cars of 3.31:1 and 2.93:1 with 3.77:1 (standard USA) being added from Series IV.


Aston Service Dorset : Tapper Roller Bearing   20-26-745

20-26-744

20-26-767

20-26-752
  Taper Roller Bearing - Axle Shaft

Oil Seal - Axle Shaft

Oil Seal - Hub

Joint - Hub Oil Seal
         
Aston Service Dorset : Axle Half Shaft DB4   20-26-743

20-26-753

20-26-758

20-26-759
  Axle Half Shaft

Key Axle Shaft

Split Pin 5/32"

Slotted Nut 7/8" UNF
         
Aston Service Dorset : Pinion Oil Seal   20-26-737

20-26-764

20-26-721

20-26-705
  Pinion Oil Seal

Joint Cover

Filler Plug

Differential Taper Roller Bearing
 
           
© 2009 Aston Service Dorset   Back to top