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Allis Chalmers CA Tractor Parts

The Model CA followed the Model C in 1950 and gave small farms a little more speed and flexibility. It kept the compact row-crop layout and four-cylinder engine, but added a four-speed transmission and a live PTO operated by a hand clutch. That hand clutch lets the PTO keep turning while the tractor is stopped, which is useful with a mower or other PTO-driven equipment.

Built at West Allis from 1950 through 1958, the CA remained a practical tractor for cultivation, mowing, and general farm work. The model is a useful step between the older C and the newer D Series.

Serial number locations: The tractor serial number is stamped on top of the transmission case, next to the shift lever. The engine serial number is on the rear left-hand side of the engine.

The table below shows the beginning tractor serial number for each Model CA year:

 

1950-1952

Model CA year Beginning serial number
1950 14
1951 322
1952 10,539

1953-1955

Model CA year Beginning serial number
1953 22,181
1954 31,424
1955 32,907

1956-1958

Model CA year Beginning serial number
1956 37,203
1957 38,618
1958 38,977

Total production: 39,499 Model CA tractors.

The final CA serial number was 39,513.

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  • Allis Chalmers Oil Pressure Gauge, display of an oil pressure measurement device with needle indicating normal oil pressure level.

    Allis Chalmers Oil Pressure Gauge (Display)

    $26.25
    613
    Allis Chalmers oil pressure gauge for the listed models and applications. Features a 0 - 30 PSI range, chrome bezel, and engine mounted design. Part Number: AC-159D Fits Allis Chalmers: B, IB, C, CA, G, RC, WC, WF, WD, WD45 Allis Chalmers: U, UC - SN...
  • Allis Chalmers Amp Gauge, display showing current amperage reading with a white face and black markings

    Allis Chalmers Amp Gauge (Display)

    $23.75
    612
    Allis Chalmers amp gauge with a chrome bezel and restoration quality finish. Fits the Allis Chalmers models listed below. Part Number: AC-258D Fits Allis Chalmers: B, C, CA, G, WC, WD, WD45, WD45D, WF, D10, D12, D14, D15, D17, D19, D21, RC, 170, 175,...
  • Allis Chalmers Amp Gauge (60-0-60) 12 Volt, automotive amp meter with display showing current flow in amperes.

    Allis Chalmers Amp Gauge (60-0-60) 12 Volt (Display)

    $23.75
    611
    12 volt Allis Chalmers amp gauge with a 60-0-60 scale and the Allis Chalmers logo. Part Number: AC-1833D Fits Allis Chalmers - Various (Any tractors that have been converted to 12 volt system) Specs 12 volt 60-0-60 scale Fits 2" diameter hol "This...
  • Starter Switch for Allis-Chalmers B C CA G IB RC WC WD WD45 WF, used parts display with metal switch component on brown background.

    Starter Switch for Allis-Chalmers B C CA G IB RC WC WD WD45 WF (Display)

    $10.25
    598
    Part Number: AB-012D Starter Switch for Allis-Chalmers B C CA G IB RC WC WD WD45 WF Manual foot / lever starter switch with saddle mount. Does not fit Autolite starter applications. Fits Allis-Chalmers: B, C, CA, G, IB, RC, WC, WD, WD45 (Gas),...
  • 6 Volt Starter Solenoid for Allis Chalmers B, C, IB, CA, D10, D12, D14, display view of a black and metallic solenoid with electrical terminals

    6 Volt Starter Solenoid for Allis Chalmers B, C, IB, CA, D10, D12, D14 (Display)

    $17.00
    594
    6 Volt Saddle Mount Starter Solenoid for Allis Chalmers tractors. Part Number: 70223334 Fits Allis Chalmers B Allis Chalmers IB Allis Chalmers C Allis Chalmers CA Allis Chalmers Early D10 Allis Chalmers Early D12 Allis Chalmers Early D14 Replaces /...
  • Allis-Chalmers 3-Position Light Switch AC-139D, 70208197, 208197, used part on display with black knob and metal components.

    Allis-Chalmers 3-Position Light Switch AC-139D 70208197 208197 (Display)

    $31.75
    588
    Allis-Chalmers 3-Position Light Switch Part Number: AC-139D Use this 3-position light switch for the listed tractor models and replacement numbers below. Switch manufacturers consider OFF as 1 position. Fits Allis Chalmers - WF, RC, WD45 (with cut out...
  • Allis-Chalmers Key Switch Ignition Switch 70225310, used ignition switch with key and electrical wiring for tractor or machinery

    Allis-Chalmers Key Switch Ignition Switch 70225310 (Display)

    $10.75
    581
    Key switch ignition switch for Allis-Chalmers, Case, Cockshutt, Ford, International, John Deere, Massey Ferguson, Minneapolis Moline, and Oliver. Includes 2 keys and is for AG and light industrial equipment. Part Number: AB-065D Fits Allis Chalmers - B,...
  • 12-Volt Bullet Style Tail Light for Allis Chalmers, image shows a black and red tail light with wiring and mounting hardware, suitable for models B, C, CA, G, WD, WD45, D10, D12, D14.

    12-Volt Bullet Style Tail Light for Allis Chalmers B C CA G WD WD45 D10 D12 D14 (Display)

    $35.75
    572
    12-volt bullet style tail light for Allis-Chalmers tractors. Painted black piggy lamp. Part Number: OL-070D Fits Allis Chalmers: B, C, CA, G, WD, WD45, D10, D12, D14 Minneapolis Moline: 4 Star, 5 Star, Big Mo 400, Big Mo 500, Big Mo 600, JetStar, 335,...
  • Allis-Chalmers 12 Volt Chrome Bullet Style Tail Light Assembly, display image of a vintage chrome bullet tail light with red lens and wiring, used for tractor or vehicle extension.

    Allis-Chalmers 12 Volt Chrome Bullet Style Tail Light Assembly (Display)

    $23.25
    571
    12 volt chrome bullet style tail light assembly for select Allis-Chalmers and John Deere models. It is a 1 wire 12 volt chrome bullet style tail light assembly with a plastic lens. Part Number: AC-099D Fits Allis Chalmers: B, C, CA, G, WD, WD45 (when...
  • Allis-Chalmers 12 Volt Bullet Tail Light, used display view, with red wiring and mounting hardware, on a brown surface.

    Allis-Chalmers 12 Volt Bullet Tail Light (Display)

    $38.25
    570
    12 volt bullet tail light for select Allis-Chalmers tractors. It includes a 12-volt bulb and a red glass lens. Part Number: AC-264V12D Fits Allis Chalmers: B, C, CA, G, WD, WD45, D10 (up to sn 9001), D12 (up to sn 9001), D14 (up to sn 19000) John Deere:...
  • Headlight Reflector for Allis-Chalmers and Other Models, metallic reflective headlight part with mounting socket, displayed on a brown surface.

    Headlight Reflector for Allis-Chalmers and Other Models (Display)

    $11.75
    569
    Part Number: AB-320D Fits Allis Chalmers - B, C, CA, D10, D12, D14, D15 (up to sn 9001), RC, WC, WD, WD45, WF Case - VA, VAC, VAH (all up to sn 5400000) Cockshutt - 20, 30, 40, 50, 540, 550, 560, 570, Co-Op with Continental F124: E2, Co-Op with Buda...
  • Headlight Lens w/ Guide Name 4-3/4 inch, clear round vehicle headlamp lens with grid pattern, used for automotive lighting display.

    Headlight Lens w/ Guide Name 4-3/4" (Display)

    $12.50
    568
    Part Number: IH-352D Headlight Lens w/ Guide Name This 4-3/4" headlight lens has a "GUIDE" marking near the bottom of the lens and a dimpled outer surface. It is interchangeable with the original. Fits Allis-Chalmers: B, IB, C, CA, D10, D12, D14, D15...
  • Light Ring 4-3/4" (Display), a circular black light ring used for photography or video lighting on a display surface.

    Light Ring 4-3/4" (Display)

    $12.50
    567
    Interchangeable with original. Part Number: IH-353BD Fits Allis-Chalmers B, IB, C, CA, D10, D12, D14, D15 (up to sn 9001), WC, WD, WD45 Avery Case VA, VAC, VAH (All up to sn 5400000) Cockshutt CO-OP E2, E3, E4, E5 Cockshutt 20, 30, 40, 50, 540, 550,...
  • Allis Chalmers Complete Headlight Assembly 12 Volt B IB C CA, display image of a round headlight with a black border and a clear, ribbed lens, connected to a black cable and metal connector for tractor or equipment lighting.

    Allis Chalmers Complete Headlight Assembly 12 Volt B IB C CA (Display)

    $45.25
    563
    Complete 12 volt headlight assembly for the listed Allis Chalmers tractors. Features a 4-3/4" curved lens and a 1/2" diameter stud. Part Number: AC-205D Fits Allis Chalmers B Allis Chalmers IB Allis Chalmers C Allis Chalmers CA Replaces / Cross...
  • Allis-Chalmers B IB C CA RC Air Cleaner Oil Cup AC-047D, display image of a black oil cup used in air cleaners for vintage Allis-Chalmers tractors on a beige surface.

    Allis-Chalmers B IB C CA RC Air Cleaner Oil Cup AC-047D (Display)

    $15.50
    559
    Air cleaner oil cup for Allis-Chalmers B, IB, C, CA, and RC tractors. Fits clamp-mounted cup applications and replaces CE13732, 70225857, and 225857. Use the dimensions below to confirm fit before ordering. Fits Allis-Chalmers B Allis-Chalmers...
  • Oil Fill Breather Cap Without Clip, display image showing a black, rounded automotive breather cap placed on a brown surface with a label marked 556 and used parts / display.

    Oil Fill Breather Cap Without Clip (Display)

    $34.00
    556
    Oil fill breather cap without clip. Includes a copper filter element, has "OIL" stamped into the top, and is e-coated in black. Made in the USA. Part Number: AC-178D Fits Allis-Chalmers B Allis-Chalmers IB Allis-Chalmers C Allis-Chalmers...
  • Allis-Chalmers Snap Coupler Latch Spring Oversized Loops 70235881, a metallic coil spring with large loops and eyelets at both ends for agricultural equipment.

    Allis-Chalmers Snap Coupler Latch Spring Oversized Loops 70235881

    Allis-Chalmers
    $8.75
    AC-269S
    Allis Chalmers snap coupler latch spring for the models listed below. Oversized end loops slip over the existing rivets for fast, hassle‑free installation—no need to pull the old rivets. 3-1/4" overall length. Sold individually. 4 used per tractor...
  • Allis-Chalmers B C CA Main Wiring Harness, display of wrapped wiring harness with labeled wires in plastic packaging.

    Allis-Chalmers B C CA Main Wiring Harness (Display)

    $74.50
    554
    Part Number: ACR4765 Main Wiring Harness Main wiring harness for the listed Allis-Chalmers tractors. Fits Allis-Chalmers B Allis-Chalmers C Allis-Chalmers CA Replaces / Cross Reference 70210949 210949 "This part was used as a display piece at tractor...