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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 Thermostat Housing Gasket Allis Chalmers 74025101 / 71364767

    Thermostat Housing Gasket for Allis-Chalmers

    Allis-Chalmers
    $6.75
    74025101
    Thermostat Housing to Block Gasket for Allis-Chalmers equipment. New part.Part Number: 74025101FitsAllis Chalmers - D21, 180, 185, 190, 190XT, 200, 210, 220, 6060, 6070, 6080, 7000, 7010, 7020, 7030,...
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  • Allis-Chalmers Universal 12V LED Fender & Cab Warning Light, Amber / Red

    Universal 12V LED Fender & Cab Warning Light Amber / Red

    Allis-Chalmers
    $59.75
    AB-3538D
    Universal 12V LED fender and cab warning light with amber and red diodes.Includes mounting stud with nut and washers.Part Number: AB-3538DFitsAllis-Chalmers - various modelsCase - various...
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  • Allis-Chalmers Grill Hood Locking Latch Kit for Allis-Chalmers D21, 160-210, metal latch with mounting bracket for tractor grill hood security.

    Grill Hood Locking Latch Kit for Allis-Chalmers D21, 160-210

    Allis-Chalmers
    $19.50
    70243274LOCK
    Grill hood locking latch kit for listed Allis-Chalmers tractors. Includes latch and loop, with a built-in lock for added security.Part Number: 70243274LOCKFitsAllis Chalmers D21Allis Chalmers...
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  • Allis-Chalmers Allis Chalmers D Series Seat Screw Hardware Kit 70916081

    Allis Chalmers D10, D12, D14, D15, D17, D19, D21 Seat Screw Hardware Kit

    Allis-Chalmers
    $4.75
    70916081
    Allis Chalmers D10, D12, D14, D15, D17, D19, D21Seat Screw Hardware KitPart Number: 70916081FitsD10D12D14D15D17D19D21Replaces / Cross Reference70916081Specs8 piece set of seat cushion screws1/4-
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  • Allis-Chalmers Deluxe Steering Wheel Spinner WSDX1

    Deluxe Steering Wheel Spinner

    Allis-Chalmers
    $17.75
    WSDX1
    Deluxe Steering Wheel Spinner for various tractor models.Part Number: WSDX1FitsAllis Chalmers - VariousAvery - VariousCase - VariousCockshutt - VariousFord - VariousIH / Farmall - VariousJohn Deere -...
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  • Allis-Chalmers Fuel Line Compression Fitting 5/16" Line to 1/8" Pipe, metallic fitting with threaded end for fuel line connection.

    Fuel Line Compression Fitting 5/16" Line to 1/8" Pipe - Various Models

    Allis-Chalmers
    $3.75
    516FITTING
    Fuel line compression fitting for various Allis-Chalmers models. Connects 5/16" line to 1/8" pipe and is used on sediment bowls in most applications.Part Number: 516FITTINGFitsAllis Chalmers -...
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  • Allis-Chalmers Allis Chalmers Brake Disc Return Spring D17-D21 170-200 70250435 250435

    Allis-Chalmers Brake Disc Return Spring

    Allis-Chalmers
    $7.75
    70250435
    Brake disc return spring for select Allis-Chalmers tractors, AC Gleaner combines, and AC miscellaneous equipment.Part Number: 70250435FitsAllis Chalmers - D17, D19, D21, 170, 175, 180, 185, 190,...
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  • Allis-Chalmers Allis Chalmers Logo Front Grill Vinyl Decal - 70924243

    Allis Chalmers Front Grill Vinyl Decal 70924243

    Allis-Chalmers
    $8.75
    DJS1043A
    Allis Chalmers front grill vinyl decal for the listed tractor models.Measures 3-1/4" x 3-1/4" and is used on the front grill.Part Number: DJS1043AFitsAllis Chalmers D21Allis Chalmers 160Allis...
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  • Allis-Chalmers Allis Chalmers D21 Upper Radiator Hose - 70239633

    Allis-Chalmers D21 Upper Radiator Hose - 70239633

    Allis-Chalmers
    $36.75
    70239633
    Allis-Chalmers D21 upper radiator hose.Replaces 70239633 and 239633.Part Number: 70239633FitsAllis-Chalmers D21Replaces / Cross Reference70239633239633Ordering NotesCheck hose location, tractor model...
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  • Allis-Chalmers D21 220 Lower Radiator Hose, rubber engine cooling hose with curved shape.

    Allis Chalmers D21 220 Lower Radiator Hose

    Allis-Chalmers
    $34.75
    70239634
    Part Number: 70239634Lower Radiator HoseLower radiator hose for Allis Chalmers D21 and 220 models. Includes an inner spring.FitsAllis Chalmers D21Allis Chalmers 220Replaces / Cross...
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  • Allis-Chalmers Tachometer Cable - Allis Chalmers D21, 170, 175, 190, 190XT, 210, 220

    Tachometer Cable for Allis Chalmers D21, 170, 175, 190, 190XT, 210, 220

    Allis-Chalmers
    $49.75
    AC-2711D
    Tachometer cable for select Allis Chalmers tractors with alternator driven tachometer. Use with AC-303D tachometer.Part Number: AC-2711DFitsAllis Chalmers - D21, 170, 175, 190, 190XT, 210, 220 (with...
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  • Allis-Chalmers Clutch Alignment Tool 10 Spline

    Clutch Alignment Tool 10 Spline for Allis-Chalmers, Ford, John Deere

    Allis-Chalmers
    $8.50
    AB-412D
    Clutch Alignment Tool 10 Spline for listed applications, with published pilot and spline dimensions.Part Number: AB-412DFitsAC Combines - A, AII, C, CII, F, F2, GAllis Chalmers - D21, 210, 220Avery -...
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  • Allis-Chalmers Camshaft Bearing (Bushing) Set - Allis Chalmers D21, 210, 220, 4W-220, 7030, 7040, 7045, 7050, 7060, 7080, 7580, 8030, 8050, 8070

    Allis-Chalmers Camshaft Bearing (Bushing) Set

    Allis-Chalmers
    $82.00
    ACSH-628S
    Camshaft bearing (bushing) set for listed Allis-Chalmers models. Fits D426 6-Cylinder Diesel Engine applications.Part Number: ACSH-628SFitsAllis Chalmers - D21, 210, 220, 4W-220, 7030, 7040, 7045,...
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  • Allis-Chalmers Fuel Filter Allis Chalmers Case Caterpillar Kubota Oliver Massey Ferguson

    Fuel Filter for Allis-Chalmers, Case, Caterpillar, Kubota, Oliver, Massey Ferguson

    Fleetguard
    $9.50
    FF1702
    Fuel filter for Allis-Chalmers, Case, Caterpillar, Kubota, Oliver, and Massey Ferguson equipment. Confirm the replacement number before ordering. Replaces Fleetguard and cross-reference numbers...
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  • Allis-Chalmers Chrome Curved Stack - Allis Chalmers D21 190 190XT 200 210 220 & Many More

    Chrome Curved Stack for Allis Chalmers D21, 190, 190XT, 190XT III, 200, 210, 220

    Allis-Chalmers
    $452.00
    ACR7522
    Chrome Curved Stack for Allis Chalmers tractors and selected International models.Part Number: ACR7522FitsAllis Chalmers D21Allis Chalmers 190Allis Chalmers 190XTAllis Chalmers 190XT IIIAllis...
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  • Allis-Chalmers 12 Volt Headlight Assembly

    12 Volt Headlight Assembly for Allis-Chalmers, John Deere and More

    Allis-Chalmers
    $49.75
    AB-525D
    12 volt headlight assembly for select Allis-Chalmers and other tractor and equipment applications.Verify fitment carefully using the model and serial notes below.Part Number: AB-525DFitsAC Cotton...
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  • Allis-Chalmers Clutch Pilot Bearing - Allis Chalmers, International, Massey Harris

    Clutch Pilot Bearing - Allis-Chalmers, International, Massey Harris

    Allis-Chalmers
    $10.00
    AB-2937D
    Clutch pilot bearing for select Allis-Chalmers, International, and Massey Harris applications.This is a sealed bearing. Dimensions are listed below.Part Number: AB-2937DFitsAllis Chalmers - D17, D19,...
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  • Allis-Chalmers Ammeter Gauge (30-0-30) - A0NN10670A

    Ammeter Gauge (30-0-30)

    Allis-Chalmers
    $10.00
    A0NN10670A
    Allis Chalmers: D10, D12, D14, D15, D17, D19, D21, 170, 175, 180, 185, 190, 190XT Series l, 190XT Series II, 200, 210, 220, 220FWA, I-40, I-400, I-60, I-600Avery: variousCase: C, CC, D, DC, DI, DO,...
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