Production History: Triumph TR2, TR3, TR3A, TR3B

7/22/1953
TS 1 FIRST TR2
TS 213 Changed Handbrake Assembly

1954 TS 303
TS 550 (abt) Changed to Steel Bonnet & Spare Door
TS 869 Changed Choke Cable Assembly
TS 995 Wiper Spindles Separated to 14"
TS 1201 Changed Radiator, Thermostat & Housing
TS 1307 Changed Rear Lights, Modified Rear Wings
TS 1869 Changed Wheels to 4 1/2"
TS 2532 Change to 24" muffler w/optional resonator
TS 2877 Changed Gear Lever & Shift Knob
TS 3268 Added Battery Box Drain Tube

10/1954
TS 4002 Short Doors w/Rocker Panels (1955 Model Year Introduced)
TS 4229 Changed to Dzus Fasteners for Bonnet Release
TS 4307 Changed to 3-Window Hood (Top)
TS 5114 Changed Rear Hub Seals

1955 TS 5193
TS 5255 Changed to Sliding Sidescreens, Factory fitted Hardtops
TS 5443 Changed Hand Brake Assembly, Larger Rear Brakes
TS 5980 Changed Overdrive Unit (Still Top Gear ONLY)
TS 6157 Added Dash Vent, Modified Bonnet Assembly
TS 6226 Changed Overdrive to Three-Speed Unit

1955 (Sep) TS 8636 LAST TR2

TR3

1955 (Oct)
TS 8637 1 3/4" Stud Mounted Type H6 Carbs, Grille Flush w/Front Apron
TS8997E: Change Manifold Inlet; Added Cam Bearings
TS 9350 E Change Manifold Inlet, Head Gasket
TS 9731 E Changed to Stiffer Pistons

1956 TS 9666
TS 9952 Change in Filter Head (Oil)
TS 11384 Added Second Silencer to Tailpipe
TS 11716 Change to Headpipe Clamp/Bracket
TS 12567 Changed Windscreen Wiper Motor Type and Location
TS 12606 E Changed to High Port Cylinder Head Assembly
TS 12650 E Change to "Flow through" Filter Head
TS 13046 Changed from Lockhead to Girling Braking System, Changed Master Cylinder,
Front Disc Brakes, Rear Brakes, Rear Axle, Differential, Suspension
TS 13046 Changed to large "T" Pedal Pad
TS 13052 E Change Manifold Inlet, Cylinder Head Studs
TS 14823 Changed Rear Axle Cover

1957 TS 15014
TS 15334 Changed Wheel Cylinder Assembly
TS 15497 Changed to Flexible Fuel Pipe, Petrol Tap
TS 15706 Changed to Combined Tail Pipe/Silencer
TS 18230 E Changed to Chromium-Plated Rocker Cover, Changed Oil Filler/Breather
TS 18902 Change in Oil Drain Plug

1957 (Aug) TS 22013 LAST TR3

TR3A

1957 (Sep)
TS 22014 Wide Grille, Door Handles, Bumper Overriders, Trunk Lock

1958 TS 25633
TS 26698 E Changed to even Stiffer Pistons
TS 26825 Changed Transmission Input & Main Shaft
TS 26904 Changed to "Handed" Rear Springs
TS 28826 Changed to Dzus Fasteners on Sidescreens
TS 33894 Changed Wheel Cylinder Assembly
TS 41000 (abt) Changed to Type H6 Carbs w/push-on Connectors

1959 TS 41630
TS 41878 Changed Medallion Colors to Blue/White
TS 50001 Change Flywheel Assembly, Shift Knob
TS 56377 Changed to 9" Rear Drums
TS 60001 Changed Gas Tank, Metal Body, Lucar Connectors,
Squared Rear Seat Shelf, Platforms for Hood & Trunk Hinges

1960 TS 65124
TS 71372 E Changed Clutch Slave Cylinder and Bracket
TS 74331 E Changed Thermostat Housing
TS 78718 E Changed Rocker Shaft Springs

1961 TS 82030

1961 (Oct) TS 83572 LAST TR3A

TR3B

1962 (Mar)
TSF1 TR4 all synchro gearbox
TSF219 Changed Disc Brake Caliper Mounting
TSF265 Changed Rear Shock Absorbers
TSF284 Minor Change to Front Suspension

1962 (Sep)
TSF530 Last w/TR3 engine

1962 (May)
TCF1 First w/TR4 engine

1962 (Oct)
TCF2804 LAST TR3B