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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.

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  • Allis-Chalmers Allis Chalmers Clutch Pedal Bushing D14 D15 D17 D19 D21 175 180 185 70233270 233270 70235082 235082

    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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  • Allis-Chalmers 2 Piece Wheel Hub Seal Kit Allis Chalmers D21 210 220 70239435 239435

    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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  • Allis-Chalmers Allis Chalmers Spindle Bushing D21 210 220 7010 7020 7030 7040 7045 7050 7060 7080 8010 8030 8050 8070 70239452

    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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  • Allis-Chalmers Allis Chalmers D21 Input Shaft Seal 70238918 238918

    Allis Chalmers D21 Input Shaft Seal

    Allis-Chalmers
    $12.00
    70238918
    Allis Chalmers D21 input shaft seal.Part Number: 70238918FitsAllis Chalmers D21Replaces / Cross Reference70238918238918Specs2.125 inches inside diameter3.001 inches outside diameter0.434 inches wide
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  • AGCO Plunger Primer Bail Assembly Allis Chalmers D15 D21 180-220 7000-7580 74050646

    Plunger Primer Bail Assembly Allis Chalmers D15 D21 180 185 190 190XT 190XT III 200 210 220 7000 7010 7020 7030 7040 7045 7050 7060 7080 7580

    Allis-Chalmers
    $57.75
    74050646
    Bail assembly for fuel primer / plunger applications on select Allis Chalmers tractors.Part Number: 74050646FitsAllis Chalmers D15Allis Chalmers D21Allis Chalmers 180Allis Chalmers 185Allis Chalmers...
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  • Allis-Chalmers Complete Wiring Harness for Allis Chalmers D21 Series I & II, multi-colored electrical wiring with connectors and labels.

    Complete Wiring Harness for Allis Chalmers D21 Series I & II

    Allis-Chalmers
    $748.00
    DJSD21050
    Complete wiring harness for Allis Chalmers D21 Series I and Series II.Part Number: DJSD21050FitsAllis Chalmers D21 Series IAllis Chalmers D21 Series IIReplaces / Cross...
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  • Allis-Chalmers Allis Chalmers Amp Gauge (60-0-60) - D10-D21 170-220 70254407 254407

    Allis Chalmers Amp Gauge 60-0-60 70254407

    Allis-Chalmers
    $44.50
    DJS70254407
    Aftermarket 60-0-60 gauge made just like the original ones that came on the tractor when new. Made to give it that original look.Part Number: DJS70254407FitsAllis Chalmers D10Allis Chalmers D12Allis...
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  • Allis-Chalmers Allis Chalmers Fuel Gauge D21 170 175 180 185 190 190XT 70240988 240988

    Allis Chalmers Fuel Gauge

    Allis-Chalmers
    $51.50
    DJS70240988
    Aftermarket fuel gauge made just like the original ones that came on the tractor when new. Made to give it that original look. Part Number: DJS70240988 Fits Allis Chalmers D21 Allis Chalmers...
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  • Allis-Chalmers 8 Lug Front Wheel Hub Assembly 70265167, metal wheel hub with bolt holes and bearing

    Allis-Chalmers 8 Lug Front Wheel Hub Assembly 70265167

    Allis-Chalmers
    $131.75
    70265167
    Allis-Chalmers - D21, 210, 220, 7000, 7010, 7020, 7030, 7040, 7045, 7050, 7060, 7080, 8010, 8030, 8050, 8070Front wheel hub assembly, 8 lug.Part Number:...
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  • Allis-Chalmers Upper Seat Spacer Pivot Bushing Upper Shock Absorber Allis Chalmers D10 Thru 220 70227915

    Allis-Chalmers Upper Seat Spacer Pivot Bushing 70227915

    Allis-Chalmers
    $13.75
    70227915
    Upper seat spacer, pivot for shock absorber for Allis-Chalmers tractors.Sold individually; 2 per tractor.Part Number: 70227915FitsD10D12D14D15D17D19D21170175180185190190XT200210220Replaces / Cross
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  • Allis-Chalmers D21 PTO Oil Seal, circular mechanical seal with black inner ring and teal outer ring for engine components.

    Allis-Chalmers D21 PTO Oil Seal

    Allis-Chalmers
    $19.75
    70240315
    Part Number: 70240315Allis-Chalmers D21 PTO Oil SealPTO oil seal for the Allis-Chalmers D21 tractor.FitsAllis-Chalmers D21Replaces / Cross Reference70240315240315Ordering NotesMatch the gasket or...
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  • Allis-Chalmers Allis Chalmers D-Series Seat Frame Lower Linkage Assembly D10-220

    Allis Chalmers D-Series Seat Frame Lower Linkage Assembly

    Allis-Chalmers
    $119.50
    70233327
    Allis Chalmers D-Series Seat Frame Lower Linkage Assembly for D10-220 models.Part Number: 70233327FitsAllis Chalmers D10Allis Chalmers D12Allis Chalmers D14Allis Chalmers D15Allis Chalmers D17Allis...
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  • Allis-Chalmers Universal 2 Position Push Pull Switch, electrical control switch with metal and plastic components and rotating mechanism for machinery.

    Universal 2 Position Push Pull Switch

    Allis-Chalmers
    $13.50
    DJS398
    Universal 2 position push pull switch for agricultural and light industrial equipment. For ignition switch applications, it can be used only on battery ignition systems.Switch is a 10amp switch with...
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  • Allis-Chalmers Universal Choke Cable 64"

    Universal Choke Cable 64"

    Allis-Chalmers
    $19.75
    AC-17033019
    Universal Choke Cable with 64" metal sheathed cable length.Part Number: AC-17033019FitsAllis Chalmers - variousCase - variousCockshutt - variousFord - variousIH / Farmall - Hydro 70, Hydro 86, 300,...
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  • Allis-Chalmers Fuel Line Adapter Fitting

    Fuel Line Adapter Fitting

    Allis-Chalmers
    $5.00
    AB-4285D
    Fuel Line Adapter Fitting for tractors and equipment using 5/16" fuel line.Part Number: AB-4285DFitsAllis Chalmers - various modelsCase - various modelsCockshutt - various modelsInternational :...
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  • Allis-Chalmers Chrome Push Button Starter Switch Allis Chalmers D15 D17 D19 D21 170 180 190 200 210 220

    Chrome Push Button Starter Switch for Allis Chalmers WD45 Diesel D15 D17 D19 D21 170 175 180 185 190 190XT 190XT III 200 210 220 6000 Series 7000 Series

    Allis-Chalmers
    $16.25
    DJS60824
    Chrome push button starter switch for the listed Allis Chalmers tractors and series.Features 5/8" mounting threads.Part Number: DJS60824FitsAllis Chalmers WD45 DieselAllis Chalmers D15Allis Chalmers...
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  • Allis-Chalmers Allis Chalmers Work Light / Taillight Bracket

    Allis Chalmers Work Light / Taillight Bracket for D17

    Allis-Chalmers
    $75.00
    DJS1211
    Part Number: DJS1211 Allis Chalmers Work Light / Taillight Bracket Bracket for the Allis Chalmers D17 Series I, II, and III. It can also be added to any D Series seat frame for use with Combo Light...
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  • Allis-Chalmers PTO Guard Allis Chalmers D17 D19 170 175 180 185 190 190XT 200 210

    PTO Guard for Allis-Chalmers D17 D19 170 175 180 185 190 190XT 200 210 7000

    Allis-Chalmers
    $109.25
    70255996
    PTO Shield / Guard for Allis-Chalmers tractors. New part.Part Number: 70255996FitsAllis Chalmers - D17 (Series IV), D19, 170, 175, 180, 185, 190, 190XT, 200, 210, D21, 220, 7000Replaces / Cross...
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