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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 Brake Release Knob 70230366 72502132

    Allis Chalmers Brake Release Knob

    Allis-Chalmers
    $7.25
    72502132
    Brake release, parking brake knob for listed Allis Chalmers models.Part Number: 72502132FitsAllis Chalmers D10Allis Chalmers D12 (Brake Contol, POSITION & TRACTION BOOSTER CONTROL)Allis Chalmers D14...
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  • Allis-Chalmers Allis Chalmers Hydraulic Lever Brake Release Knob

    Allis-Chalmers Hydraulic Lever Brake Release Knob

    Allis-Chalmers
    $5.75
    K21
    Hydraulic lever brake release knob for Allis-Chalmers equipment. Fits various models.Part Number: K21FitsAllis-Chalmers - fits various modelsSpecs3/8" - 24" thread1-3/8" diameter
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  • Allis-Chalmers Allis Chalmers Hydraulic Lever Brake Release Knob

    Allis-Chalmers Hydraulic Lever Brake Release Knob

    Allis-Chalmers
    $5.75
    K52
    Part Number: K52Allis-Chalmers Hydraulic Lever Brake Release KnobHydraulic lever and brake release knob with a 1-1/4" diameter and 3/8"-24 thread.FitsVarious models.SpecsDiameter: 1-1/4"Thread:...
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  • Allis-Chalmers Water Temperature Gauge, industrial water temperature meter with 130-280 degree range, with metal mounting and coiled sensor cable.

    Allis-Chalmers Water Temperature Gauge 130-280 Degree Range

    Allis-Chalmers
    $26.75
    UTG25
    Part Number: UTG25OverviewWater temperature gauge with a 130-280 degree range. Dash mount design with block fitting and chrome bezel included.Specs130-280 degree rangeDash mountIncludes block...
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  • Allis-Chalmers Rivet, Allis Chalmers Snap Couplers - DJS313

    Allis Chalmers Snap Coupler Rivet

    Allis-Chalmers
    $0.65
    DJS313
    Rivet for Allis-Chalmers Snap Couplers. Used to attach springs and sold individually.Part Number: DJS313FitsAllis-Chalmers Snap Coupler applicationsNotesSold individually.Used to attach springs.Item...
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  • Allis-Chalmers Allis Chalmers Sediment Bowl Assembly D15 D17 D19 D21 WD WD45 170 175 180 190 190XT 70237946

    Allis Chalmers Sediment Bowl Assembly D15 D17 D19 D21 WD WD45 170 175 180 190 190XT

    Allis-Chalmers
    $34.75
    ACR2406
    Allis Chalmers sediment bowl assembly for the listed tractor models and applications below.Part Number: ACR2406Fits190XT, 190 (Gas, Dsl. Using 2.315 Long Glass Bowl)D15 (Gas (SN: 9001 & up) & All...
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  • Allis-Chalmers Allis Chalmers Amp Gauge (60-0-60) 12 Volt

    Allis Chalmers Amp Gauge (60-0-60) 12 Volt

    Allis-Chalmers
    $29.75
    AC-1833D
    12 volt Allis Chalmers amp gauge with a 60-0-60 scale and the Allis Chalmers logo.Part Number: AC-1833DFitsAllis Chalmers - Various (Any tractors that have been converted to 12 volt system)Specs12...
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  • Allis-Chalmers Fuel Tank Webbing - Black 1 inch, a black webbing roll used for securing fuel tanks, priced per foot.

    Fuel Tank Webbing - Black 1" - Price Per Foot

    Allis-Chalmers
    $2.35
    3510T82
    Black fuel tank webbing for tractors using webbed insulation between fuel tank mounts and other sheet metal parts.Part Number: 3510T82FitsAllis-ChalmersCaseWhite /OliverCockshutFordInternational /...
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  • Allis-Chalmers Fuel Tank Webbing - Tan 1-1/2 inch, priced per foot, shown as a roll of tan webbing material for fuel tanks.

    Fuel Tank Webbing - Tan 1-1/2" - Price Per Foot

    Allis-Chalmers
    $4.35
    3531T52
    Tan fuel tank webbing for tractors using webbed insulation between fuel tank mounts and sheet metal parts.Part Number: 3531T52FitsAllis-ChalmersCaseWhite /OliverCockshutFordInternational /...
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  • Allis-Chalmers Allis Chalmers D Series Hydraulic Position Control Vinyl Decal, close-up image of the decal with detailed text and markings.

    Allis Chalmers D Series Hydraulic Position Control Vinyl Decal

    Allis-Chalmers
    $11.00
    DJS2496
    Hydraulic position control vinyl decal for listed Allis Chalmers D Series models.Part Number: DJS2496FitsAllis Chalmers D10Allis Chalmers D12Allis Chalmers D14Allis Chalmers D15Allis Chalmers...
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  • Allis-Chalmers Unpainted Emblem Steering Wheel Front Nose Allis Chalmers ED40 D10 D12 D14 D15 D17 D19 D21

    Allis Chalmers ED40 D10 D12 D14 D15 D17 D19 D21 Steering Wheel Front Nose Emblem

    Allis-Chalmers
    $19.50
    ACR3996
    Unpainted steering wheel front nose emblem for listed Allis Chalmers applications.Part Number: ACR3996FitsAllis Chalmers ED40Allis Chalmers D10Allis Chalmers D12 (SN # 19001 and Up)Allis Chalmers...
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  • Allis-Chalmers Hood Latch Snap Latch Allis Chalmers D10 D12 D14 D15 D17 D19 D21

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

    Allis-Chalmers
    $12.00
    CH4000
    Part Number: CH4000Hood Latch Snap LatchHood latch snap latch for select Allis Chalmers tractors, bale throwers, balers, and some Gleaner combines. Strike not included.FitsALLIS CHALMERS - D10, D12,...
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  • Allis-Chalmers Hood Latch With Loop Snap Latch Allis Chalmers D10 D12 D14 D15 D17 D19 D21

    Allis Chalmers D10 D12 D14 D15 D17 D19 D21 Hood Latch

    Allis-Chalmers
    $12.00
    CH4009
    Part Number: CH4009Allis Chalmers Hood LatchLoop-style snap hood latch for the Allis Chalmers tractors and Gleaner combines listed below.FitsAllis Chalmers D10Allis Chalmers D12Allis Chalmers...
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  • Allis-Chalmers Tractor Serial Numbers 1940-1975 Manual, book cover with tractor illustration and list of manufacturers.

    Tractor Serial Numbers 1940-1975 Manual

    Allis-Chalmers
    $9.00
    MAN072D
    Tractor serial numbers reference for 1940-1975 models.Use this manual to find serial number information for Allis-Chalmers and other listed brands.Part Number:...
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  • Allis-Chalmers 12 Volt Round Red Tail Light Assembly with License Lamp Window, vintage tractor lighting part.

    12 Volt Round Red Tail Light Assembly w/ License Lamp Window

    Allis-Chalmers
    $13.75
    AB-548D
    Part Number: AB-548D12 Volt Round Red Tail Light Assembly w/ License Lamp Window12 volt round red tail light assembly with a license lamp window. For multiple tractor applications listed below...
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  • Allis-Chalmers 12 Volt Coil with Internal Resistor, black coil with metal mounting brackets and electrical connectors, used for tractor ignition systems.

    12 Volt Coil with Internal Resistor

    Allis-Chalmers
    $24.75
    AB-509D
    12 volt coil with internal resistor. 2-3/16" barrel O/D and includes coil mounting bracket.Part Number: AB-509DFitsAllis ChalmersCaseCockshuttFord - 2000 3 Cylinder, 2000 4 cylinder, 4000 3 cylinder,...
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  • Allis-Chalmers 6-inch Battery Cable, heavy-duty braided silver cable with metal terminal end for automotive battery connections.

    6" Battery Cable

    Allis-Chalmers
    $15.75
    AB-401D
    6" ground battery cable, non-insulated, 2 gauge, with heavy duty straight terminals.Part Number: AB-401DFitsAllis Chalmers - D14 (Ground strap), D17 (Ground Strap on Diesel up to SN: 38963 and All...
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  • Allis-Chalmers Universal 12 Volt Resistor

    Universal 12 Volt Resistor

    Allis-Chalmers
    $9.75
    AB-366D
    Universal 12 volt resistor, 2-terminal style, reduces voltage with 4 ohms of resistance.Part Number: AB-366DFitsAllis Chalmers - variousCase - variousCockshutt - variousFord - variousInternational -...
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