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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 D21 Tachometer Operation Meter

    Allis-Chalmers D21 Tachometer Operation Meter (Display)

    $158.50
    700
    Tachometer operation meter for Allis-Chalmers D21 tractors. Listed with replacement number 239730 and tach-with-bracket assembly number 70239731. Part Number: AC-278D Fits Allis Chalmers...
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  • Allis Chalmers Bronze Seat Bushings Set 70227910 227910, display of ten used bronze bushings for heavy machinery.

    Allis Chalmers Bronze Seat Bushings Set 70227910 227910 (Display)

    $24.50
    682
    Set of 8 bronze seat bushings for Allis Chalmers tractors. Sold under part number 70227910. Part Number: 70227910 Fits Allis Chalmers D10 Allis Chalmers D12 Allis Chalmers D14 Allis Chalmers...
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  • Allis-Chalmers Upper Seat Spacer Pivot Bushing 70227915, display image of a blue cylindrical metal bushing with some rust and wear.

    Allis-Chalmers Upper Seat Spacer Pivot Bushing 70227915 (Display)

    $11.00
    681
    Upper seat spacer, pivot for shock absorber for Allis-Chalmers tractors. Sold individually; 2 per tractor. Part Number:...
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  • Grill Hood Locking Latch Kit for Allis-Chalmers D21, 160-210, display showing metal latch assembly with locking mechanism and small metal bracket on brown background

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

    $15.50
    651
    Grill hood locking latch kit for listed Allis-Chalmers tractors. Includes latch and loop, with a built-in lock for added security. Part Number: 70243274LOCK Fits Allis Chalmers D21 Allis Chalmers...
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  • Hood Latch Snap Latch for Allis Chalmers D10 D12 D14 D15 D17 D19 D21, metallic hood latch snap fitting on brown background

    Hood Latch Snap Latch for Allis Chalmers D10 D12 D14 D15 D17 D19 D21 (Display)

    $9.50
    650
    Part Number: CH4000 Hood Latch Snap Latch Hood latch snap latch for select Allis Chalmers tractors, bale throwers, balers, and some Gleaner combines. Strike not included. Fits ALLIS CHALMERS - D10,...
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  • Allis Chalmers D10 D12 D14 D15 D17 D19 D21 Hood Latch, used display part for tractor hood latch replacement.

    Allis Chalmers D10 D12 D14 D15 D17 D19 D21 Hood Latch (Display)

    $9.50
    649
    Part Number: CH4009 Allis Chalmers Hood Latch Loop-style snap hood latch for the Allis Chalmers tractors and Gleaner combines listed below. Fits Allis Chalmers D10 Allis Chalmers D12 Allis Chalmers...
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  • Allis Chalmers Cream Steering Wheel, display model of a vintage white steering wheel with three spokes and a black central hub.

    Allis Chalmers Cream Steering Wheel (Display)

    $46.25
    647
    Cream steering wheel for listed Allis-Chalmers tractors and combines. Like original and made with all new material. Part Number: AC-137D Fits Allis Chalmers - ED40, D10, D12, D14 (sn 19001 and up),...
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  • Allis Chalmers Cream Steering Wheel, white vintage steering wheel for tractor display.

    Allis Chalmers Cream Steering Wheel (Display)

    $46.25
    646
    Cream steering wheel for listed Allis-Chalmers tractors and combines. Like original and made with all new material. Part Number: AC-137D Fits Allis Chalmers - ED40, D10, D12, D14 (sn 19001 and up),...
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  • Voltage Regulator for Allis-Chalmers 190XT D21 160 185 200 170 175 180 190 210 220, black electrical component with mounting brackets on a brown background.

    Voltage Regulator for Allis-Chalmers 190XT D21 160 185 200 170 175 180 190 210 220 (Display)

    $29.50
    636
    12 volt voltage regulator for Allis-Chalmers tractors, for the models listed below. Part Number: AB-1148D Fits Allis-Chalmers: 190XT, D21, 160, 185, 200 (with factory alternator), 170, 175, 180,...
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  • Ammeter Amp Gauge (30-0-30) Display, round electrical ammeter gauge with black dial and silver bezel, measuring amperes in a vehicle or electrical system.

    Ammeter Amp Gauge (30-0-30) (Display)

    $15.75
    620
    Ammeter amp gauge with a 30-0-30 range, chrome bezel, and 2" diameter hole fitment. Fits the tractor models and applications listed below. Part Number: AB-109D Fits Allis Chalmers: D10, D12, D14,...
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  • Allis Chalmers Amp Gauge, round meter displaying current ampere readings with 'Charge' and 'Discharge' indicators.

    Allis Chalmers Amp Gauge (Display)

    $23.75
    629
    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,...
    Out of stock
  • Allis Chalmers Amp Gauge 60-0-60 70254407, display of a round amp gauge with a needle, black casing, and a white faceplate marked with ampere measurements.

    Allis Chalmers Amp Gauge 60-0-60 70254407 (Display)

    $35.50
    628
    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: DJS70254407 Fits Allis Chalmers D10 Allis Chalmers...
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  • Ammeter 60-0-60 AMP Gauge 2-inch Diameter (Display), round analog current meter for measuring electrical current with black face and red needle.

    Ammeter 60-0-60 AMP Gauge 2" Dia (Display)

    $18.50
    627
    Universal 60-0-60 AMP ammeter gauge with a 2" dia. hole fitment. Condition: New. Part Number: AMG60 Fits Allis Chalmers - 160, 170, 175, 180, 185, 190, 190XT, 200, 210, 220, 2RCP, 4650, 4660,...
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  • Allis Chalmers Amp Gauge, a circular analog ammeter display showing amperes with a needle indicator and a white dial face.

    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,...
    Out of stock
  • Allis-Chalmers Engine Oil Pressure Switch D21 180 185 190 190XT 190XT III 200 210 220, display image of a used engine oil pressure switch with metallic body, threaded end, and electrical contact.

    Allis-Chalmers Engine Oil Pressure Switch D21 180 185 190 190XT 190XT III 200 210 220 (Display)

    $16.00
    608
    Part Number: 74021445 Allis-Chalmers Engine Oil Pressure Switch Engine oil pressure switch for listed tractors and combines. Fits Allis Chalmers - D21, 180, 185, 190, 190XT, 190XT III, 200, 210,...
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