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Allis Chalmers CA Tractor Parts

About the Allis-Chalmers CA

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 Reference

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.

Allis-Chalmers CA Paint Reference

For restoration planning, the Allis-Chalmers CA is listed in the Allis-Chalmers tractor paint guide with the original paint references below.

Allis-Chalmers CA paint reference by production period
Production period Metal Wheels Disc Chassis Trim
1929 through 1960 Persian Orange 1 Persian Orange 1 Persian Orange 1, Aluminum Persian Orange 1 Persian Orange 1

Paint placement can vary by production year, series, and equipment configuration.

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  • Allis-Chalmers 12 Volt Bullet Tail Light (Display), a vintage tractor tail light with metal housing, black lens, and red wiring on a display board.

    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...
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  • Headlight Reflector for Allis-Chalmers and Other Models, shiny chrome round reflector with mounting hole, displayed on a brown background.

    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,...
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  • Headlight Lens w/ Guide Name 4-3/4" (Display), transparent round car headlight lens with a textured surface for vehicle lighting.

    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...
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  • Light Ring 4-3/4" (Display), black circular light ring used for display lighting or photography.

    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...
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  • Allis Chalmers Complete Headlight Assembly, 12 Volt B IB C CA, displayed as a used part with a round housing, reflector, and attached wiring, on a plain surface.

    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...
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  • Air Cleaner Oil Cup Clamp for Allis-Chalmers B IB C CA RC G / IH IH-181D, black metal engine part with clamp and screw in display.

    Air Cleaner Oil Cup Clamp for Allis-Chalmers B IB C CA RC G / IH IH-181D (Display)

    $8.50
    560
    Air cleaner oil cup clamp for Allis-Chalmers B, IB, C, CA, RC, and G tractors. New replacement part with the key reference numbers preserved: AC 225817, IH 52872D, and IHS181. Fits Allis-Chalmers:...
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  • Allis-Chalmers B IB C CA RC Air Cleaner Oil Cup AC-047D, display image of a black round oil cup for air cleaner on a beige background.

    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...
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  • 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"...
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  • 6 Volt Distributor Coil AB-011D, display model of a black ignition coil with electrical connectors on top on a cardboard surface

    6 Volt Distributor Coil AB-011D (Display)

    $22.25
    550
    6 Volt Distributor Coil - AB-011D This 6 volt distributor coil is listed as AB-011D and fits listed tractor applications. It includes multiple cross-reference numbers across several brands...
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  • Allis Chalmers B IB C CA D10 D12 D17 D19 Clutch Cover Plate, used display image of a pinkish clutch cover plate with two metal protrusions on a brown background.

    Allis Chalmers B IB C CA D10 D12 D17 D19 Clutch Cover Plate (Display)

    $15.75
    547
    Clutch Inspection Cover Plate for Allis Chalmers tractors. Includes integral spring steel clips. Part Number: AC-189D Fits B IB C CA D10 D12 D17 D19 Replaces / Cross...
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  • Allis-Chalmers Hydraulic and Transmission Oil Dipstick Cap, orange and metal dipstick tool with a plastic handle for measuring oil levels.

    Allis-Chalmers Hydraulic and Transmission Oil Dipstick Cap (Display)

    $22.25
    545
    Hydraulic and transmission oil dipstick cap for select Allis-Chalmers tractors. Cap and dipstick all in one. Part Number: AC-302D Fits CA WD WD45 D10 D12 Replaces / Cross...
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  • Fuel Cap for Allis-Chalmers, Case, Ford, JD, and Massey, display of a round metal fuel cap with a shiny surface and a bar handle.

    Fuel Cap for Allis-Chalmers, Case, Ford, JD, and Massey (Display)

    $7.75
    540
    Chrome vented fuel cap with gasket for listed tractor models. Includes gasket and measures 2-5/8" O.D. with 1/4" height. Part Number: MH-043D Fits Allis Chalmers: D10, D12, D14, D15, D17, D19, 170,...
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  • Allis-Chalmers 4 PSI Radiator Cap, display showing used part with a metal radiator cap featuring a circular design with the word 'TIGHTEN' and 'REMOVE SLOWLY' embossed around the center.

    Allis-Chalmers 4 PSI Radiator Cap (Display)

    $7.75
    538
    Allis-Chalmers 4 PSI radiator cap includes the gasket and is like the original. For 4 PSI pressurized systems with a 1.500" radiator neck ID. Part Number: AB-008D Fits Allis Chalmers: B (sn 61221 &...
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  • Cap for Fuel, Gas, Oil, or Power Steering, display view of a metallic cap with a rounded shape and central valve, used for vehicle fluid reservoirs.

    Cap for Fuel, Gas, Oil, or Power Steering (Display)

    $8.00
    535
    Part Number: IH-338D Product Overview Cap can be used as an engine oil cap, auxiliary starting tank cap, power steering cap, or oil filler cap. Fits Allis Chalmers: Engine Oil Cap: G Allis Chalmers:...
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  • 7 PSI Radiator Cap for Allis Chalmers, Case, Ford, IH, John Deere, display of radiator cap on a brown background.

    7 PSI Radiator Cap for Allis Chalmers, Case, Ford, IH, John Deere (Display)

    $8.50
    531
    7 PSI radiator cap. For listed applications with a 1-inch tall filler neck. Condition: New. Part Number: AB-1396D Fits Allis Chalmers - B (sn 61221 & up), C (sn 18581 and up), CA, G, RC, WC (sn...
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