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Allis Chalmers D21 Tractor Parts

About the Allis-Chalmers D21

The D21 was introduced in 1963 as the largest tractor in the D Series. It used a large six-cylinder diesel, power steering, an independent 1,000-rpm PTO, and the size and weight needed for large field work.

The D21 was built from 1963 through 1969 in Series I and Series II versions. The serial number table shows the change from Series I to Series II during the 1965 production run.

Serial Number Reference

Serial number locations: The tractor serial number is stamped on the left side, on the front flange of the torque housing near the starter mounting. The engine serial number is stamped on a plate at the upper rear of the engine block on the left-hand side.

The table below shows the beginning tractor serial number for each Model D21 year and series:

 

1963-1965
Model D21 year Beginning serial number
1963 - Series I 100
1964 - Series I 1,417
1965 - Series I 2,079
1965-1967
Model D21 year Beginning serial number
1965 - Series II 2,130
1966 - Series II 2,408
1967 - Series II 2,863
1968-1969
Model D21 year Beginning serial number
1968 - Series II 3,777
1969 - Series II 4,498

Total production: 2,409 Model D21 tractors.

Allis-Chalmers D21 Paint Reference

For restoration planning, the Allis-Chalmers D21 is listed in the Allis-Chalmers tractor paint guide with the original paint references below.

Allis-Chalmers D21 paint reference by production period
Production period Metal Wheels Disc Chassis Trim
1961 through 1977 Persian Orange 2 Cream, Persian Orange 2 Cream, Aluminum Persian Orange 2 Cream, Chrome grille

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

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  • Allis-Chalmers Power Director Light Lens - Green, close-up of a vibrant green light lens with a ribbed, dome-shaped design on a plain white background.

    Allis Chalmers Power Director Light Lens - Green

    Allis-Chalmers
    $12.25
    70240838-G
    Green Power Director light lens for select Allis Chalmers tractors.Use the part numbers below to confirm your application.Part Number: 70240838-GFitsAllis Chalmers D17, D19, D21, 170, 175, 180, 185,...
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  • Allis-Chalmers Green Power Director Dash Oil Pressure Warning Light, automotive indicator warning light with green rounded top and metallic base.

    Allis Chalmers Green Power Director Dash Oil Pressure Warning Light

    Allis-Chalmers
    $39.50
    70240837-G
    Allis Chalmers - D14, D15, D17, D19, D21, 170, 175, 180, 185, 190, 190XT, 200, 210, 220Part Number: 70240837-GReplaces / Cross Reference70240837, 240837, 70240838, 240838NotesGreen Power Director...
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  • Allis-Chalmers Red Power Director Dash Oil Pressure Warning Light, a small automotive warning light with a red lens and metal mounting base.

    Allis Chalmers Red Power Director Dash Oil Pressure Warning Light

    Allis-Chalmers
    $39.50
    70240837-R
    Allis Chalmers - D14, D15, D17, D19, D21, 170, 175, 180, 185, 190, 190XT, 200, 210, 220Part Number: 70240837-RReplaces / Cross Reference70240837, 240837, 70240838, 240838NotesRed Power Director Dash...
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  • Allis-Chalmers Comfort Classic Vinyl Seat Assembly, black cushioned tractor or machinery seat with armrests.

    Allis Chalmers Comfort Classic Vinyl Seat Assembly

    Allis-Chalmers
    $665.00
    DJS7025
    Allis Chalmers Comfort Classic Seat Assembly (VINYL)Part Number: DJS7025FitsD10, D12, D14, D15, D17, D19, D21170, 175, 180, 185, 190, 190 XT, 190 XT III200, 210, 220, 220 FWA7000, 7010, 7020, 7030,...
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  • A black coil spring with hooks on both ends, designed for Allis-Chalmers farm tractors, including models 190, 190XT, 190XT III, 200, and D21.

    Brake Pedal Spring for Allis Chalmers 190, 190XT, 190XT III, 200, D21

    Allis-Chalmers
    $19.75
    70239305
    Brake pedal spring for Allis Chalmers 190, 190XT, 190XT III, 200, and D21 tractors.Use the verified model fitment and replacement number below when matching your part.Part Number: 70239305FitsAllis...
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  • A metal PTO guard shield designed for Allis-Chalmers farm tractors, with the model number D21 KI1261, shown in a silver finish.

    Allis-Chalmers PTO Guard Shield D21 KI1261

    Allis-Chalmers
    $135.00
    KI1261
    Part Number: KI1261Allis-Chalmers PTO Guard ShieldListed for Allis-Chalmers D21 tractors. Replaces 70255996.FitsAllis-Chalmers D21Replaces / Cross Reference70255996NotesPTO Shield Guard
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  • A metal hardware kit consisting of two large flat levers with circular holes at each end, a cylindrical metal pin with a hole, and a small curved metal clip, designed for use with Allis-Chalmers farm tractors and Case equipment.

    Brake Band Hardware Kit for Allis-Chalmers and Case

    Allis-Chalmers
    $9.75
    70235614
    Brake Band Hardware Kit for Allis-Chalmers and Case tractors.2 kits used per side. Order 4 kits if servicing both sides.Part Number: 70235614FitsAllis Chalmers - D17 (SN 42001 & up), D19, D21, 170,...
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  • An aftermarket inline fuel filter with two black rubber hoses, two metal clamps, and a metal housing, designed for Allis-Chalmers farm tractors.

    Inline Fuel Filter 33033

    Allis-Chalmers
    $8.75
    33033
    Part Number: 33033Inline Fuel FilterIn-line fuel filter for use with 3/8" fuel lines. Includes hose and clamps and is Used to help keep rust and dirt out of the carburetor.FitsAllis Chalmers -...
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  • A black curved rubber hose used as a breather valve cover hose for Allis-Chalmers farm tractors.

    Allis-Chalmers Valve Cover Breather Hose 74036094

    Allis-Chalmers
    $33.75
    74036094
    Allis Chalmers - D19, D21, 4W220, 7030, 7040, 7045, 7050, 7060, 7080, 7580, 8030, 8050, 8070Valve cover breather hose.Part Number: 74036094Replaces / Cross Reference74036094Specs1-1/4" ID37-1/4"...
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  • A round mechanical seal with a black inner ring and a silver outer ring, designed for Allis-Chalmers D21 farm tractors.

    Allis-Chalmers D21 Outer Axle Seal 70238934

    Allis-Chalmers
    $44.50
    70238934
    Part Number: 70238934Outer Axle SealOuter axle seal for the listed Allis-Chalmers model.FitsAllis-Chalmers D21Replaces / Cross Reference23893470238934Specs4.260 OD x 3.190 ID
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  • A sediment bowl filter for Allis-Chalmers farm tractors, featuring a tall bowl assembly with a filter element inside. The filter has a metal body, a glass bowl for sediment collection, and a brass shut-off valve at the side. The image notes that the product is for illustrative purposes and the sediment bowl assembly is not included.

    Sediment Bowl Filter for Tall Bowl Assemblies

    Aftermarket
    $12.25
    DJS3039
    Fuel filter only. Sediment bowl not included. This fits our sediment bowl assembly ACR2406 and also fits replacement glass bowl
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  • A black, curved rubber hose with a smooth texture, designed for Allis-Chalmers farm tractors, specifically for the D21, 210, and 220 models. The hose is labeled with the number 74026082.

    Allis-Chalmers D21 210 220 Thermostat Bypass Hose

    Allis-Chalmers
    $27.75
    74026082
    Thermostat coolant bypass hose for Allis-Chalmers diesel tractors.Includes the stated 1.375" (1-3/8") ID size.Part Number: 74026082FitsAllis-Chalmers D21 dieselAllis-Chalmers 210 dieselAllis-Chalmers...
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  • A metallic, round aftermarket mini Denso alternator pulley with a central hole, designed for use on Allis-Chalmers farm tractors, not for automobiles.

    Mini Denso Alternator Pulley AB-2315D

    Aftermarket
    $39.75
    AB-2315D
    Alternator Pulley Part Number: AB-2315D This alternator pulley is listed for the AB-535D Mini Alternator and select Denso alternators shown below. Review the dimensions before ordering. Fits AB-535D...
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  • A black hydraulic hose with a curved shape, designed for Allis-Chalmers farm tractors such as D21, 190, 190XT, 210, and 220. The hose has a textured surface with a small white number printed on it.

    Hydraulic Hose, Filter to Pump for Allis Chalmers D21 190 190XT 210 220

    Allis-Chalmers
    $37.75
    70239723
    Hydraulic hose, filter to pump, for select Allis Chalmers equipment.Part Number: 70239723FitsD21190 (Diesel, up to SN 26857)190 (Gas, up to SN 26855)190XT (Diesel, up to SN 26612)210220Replaces /...
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  • A close-up image of a cylindrical metallic bushing, likely made of bronze or brass, used for Allis-Chalmers farm tractors. The surface shows a smooth, shiny finish.

    Allis-Chalmers Clutch Pedal Bushing D14 D15 D17 D19 D21 175 180 185

    Allis-Chalmers
    $13.00
    70235082
    Clutch pedal bushing for Allis-Chalmers tractors listed below.Part Number: 70235082FitsAllis-Chalmers D17Allis-Chalmers D19Allis-Chalmers 175Allis-Chalmers 180Allis-Chalmers 185Allis-Chalmers D14 (SN...
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  • A two-piece wheel hub seal kit designed for Allis-Chalmers farm tractors, specifically for models D21, 210, and 220. The kit includes two circular seals with different dimensions, used for maintaining the wheel hub assembly.

    Allis-Chalmers 2-Piece Wheel Hub Seal Kit D21 210 220

    Allis-Chalmers
    $37.75
    70239435
    2-Piece Wheel Hub Seal Kit for Allis-Chalmers D21, 210, and 220.Contains part numbers 70239446 and 70239462.Part Number: 70239435FitsAllis-Chalmers D21Allis-Chalmers 210Allis-Chalmers 220Replaces /...
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  • A cylindrical metal spindle bushing with a smooth exterior and a golden interior, designed for Allis-Chalmers farm tractors, specifically for models such as D21, 210, 220 with part numbers 7010-8070.

    Allis Chalmers Spindle Bushing D21 210 220 7010-8070

    Allis-Chalmers
    $19.50
    AC-5365D
    Allis Chalmers spindle bushing for select models. Application varies by tractor model, with upper and lower spindle bushing notes listed below. Part Number: AC-5365D Fits Allis Chalmers D21 Allis...
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