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Allis Chalmers IB Tractor Parts

About the Allis-Chalmers IB

The IB was Allis-Chalmers' industrial version of the Model B. It kept the compact four-cylinder layout but added a heavier frame and front axle, along with a foot throttle for industrial work.

IB tractors built before 1946 shared the serial-number sequence used by the farm Model B. From 1946 onward, the IB used its own IB-prefixed serial numbers, and the model continued into the 1950s.

Serial Number Reference

Serial number locations: The tractor serial number is stamped behind the gear shift lever on top of the transmission case. The engine serial number is on the rear left-hand side of the engine between the carburetor and fuel filter.

The table below shows the beginning tractor serial number for each Model IB year:

 

1938-1943
Model IB year Beginning serial number
1938 - Shared with Model B 97
1939 - Shared with Model B 11,800
1940 - Shared with Model B 33,502
1941 - Shared with Model B 49,721
1942 - Shared with Model B 56,782
1943 - Shared with Model B 64,501
1944-1948
Model IB year Beginning serial number
1944 - Shared with Model B 65,502
1945 - Shared with Model B 70,210
1946 - IB serial prefix IB1001
1947 - IB serial prefix IB1003
1948 - IB serial prefix IB1010
1949-1953
Model IB year Beginning serial number
1949 - IB serial prefix IB1282
1950 - IB serial prefix IB1556
1951 - IB serial prefix IB1879
1952 - IB serial prefix IB2219
1953 - IB serial prefix IB2570

Total production: 2,850 Model IB tractors.

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  • Allis-Chalmers Allis Chalmers B C CA IB RC Valve Cover Gasket NBR w/ Washers Rubber 70206892 206892

    Allis Chalmers B C CA IB RC Valve Cover Gasket 70206892

    Allis-Chalmers
    $27.75
    70206892
    Valve cover gasket for Allis Chalmers B, C, CA, IB, and RC tractors. Made from Nitrile butadiene rubber (NBR) and includes (4) valve cover mounting washers 70226477.Part Number: 70206892FitsAllis...
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  • Allis-Chalmers Black Tractor Seat Pad Cushion 19"

    Black Tractor Seat Pad Cushion 19"

    Allis-Chalmers
    $39.50
    YF30BLK
    This black tractor seat pad cushion is for tractors with a round pan seat. It fits a 19" to 21" seat pan side to side and uses a drawstring attachment.Part Number: YF30BLKFitsAllis Chalmers - B, C,...
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  • Allis-Chalmers Orange and White Tractor Seat Pad Cushion 19"

    Orange and White Tractor Seat Pad Cushion 19"

    Allis-Chalmers
    $39.50
    YF30WO
    This orange and white tractor seat pad cushion is for tractors with a round pan seat. It fits a 19" to 21" seat pan side to side and uses a drawstring attachment.Part Number: YF30WOFitsAllis Chalmers...
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  • Pertronix Electronic Ignition Conversion Kit 12V Allis Chalmers B IB C CA D10 D12 D14 D15 D17 G WC WD WD45 WF 12V Negative Ground

    Electronic Ignition Conversion Kit 12V for Allis Chalmers B, IB, C, CA, D10, D12, D14, D15, D17, G, WC, WD, WD45, WF

    Pertronix
    $191.50
    ACR3189
    Ignitor Delco fits 4-cylinder applications with 12 volt negative ground. This electronic ignition conversion kit replaces points and condenser with a breakerless solid state system. It fits entirely...
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  • Allis-Chalmers Clutch Pedal Return Spring - B, CA, D10, D12, IB, metal coil spring with hooks on both ends used for clutch pedal functionality.

    Allis Chalmers Clutch Pedal Return Spring - B, CA, D10, D12, IB

    Allis-Chalmers
    $13.75
    AC-305D
    Clutch pedal return spring for Allis-Chalmers tractors. Includes fitment notes, cross references, and measurements.Part Number: AC-305DFitsAllis Chalmers B (SN 124037 and up)Allis Chalmers IB (SN...
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  • Allis-Chalmers Allis Chalmers PTO Guard (Shield) - B, IB, C, CA, D10, D12 - 70231775

    Allis Chalmers PTO Guard (Shield) - B, IB, C, CA, D10, D12

    Allis-Chalmers
    $95.00
    70231775
    Allis Chalmers PTO Guard (Shield) for B, IB, C, CA, D10, and D12 tractors. Comes primered.Part Number: 70231775FitsAllis Chalmers BAllis Chalmers IBAllis Chalmers CAllis Chalmers CAAllis Chalmers D10...
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  • Allis-Chalmers Allis Chalmers Front Tricycle Lower Spindle Shaft Seal - B,IB,C,CA - 70210289

    Allis Chalmers Front Tricycle Lower Spindle Shaft Seal - B, IB, C, CA

    Allis-Chalmers
    $36.50
    70210289
    Allis Chalmers front tricycle lower steering spindle shaft seal for B, IB, C, and CA models.Part Number: 70210289FitsBIBCCAReplaces / Cross Reference70210289210289Specs2.760" OD1.670" ID0.313" wide
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  • Allis-Chalmers Allis Chalmers Front Tricycle Upper Spindle Shaft Seal - B,IB,C,CA - 70210293

    Allis Chalmers Front Tricycle Upper Spindle Shaft Seal - B, IB, C, CA

    Allis-Chalmers
    $32.25
    70210293
    Allis Chalmers front tricycle upper steering spindle shaft seal for B, IB, C, and CA models.Part Number: 70210293FitsBIBCCAReplaces / Cross Reference70210293210293Specs1.953" OD1.330" ID0.340" wide
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  • Allis-Chalmers 2" Sediment Bowl Gasket (NBR) - 70208362

    2" Sediment Bowl Gasket (NBR)

    Allis-Chalmers
    $1.70
    70208362
    2" sediment bowl gasket made from nitrile butadiene rubber (NBR).Part Number: 70208362FitsAllis Chalmers - B, C, CA, G, D10, D12, D14, D15 (Gas To Sn# 9000), D17 (Gas To Sn# 42000), I40, I400, I60,...
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  • Allis-Chalmers Universal 2 Position Push Pull - Ignition - Light Switch - SSW2809

    Universal 2 Position Push Pull Ignition Light Switch

    Allis-Chalmers
    $7.50
    SSW2809
    Universal 2 position push/pull switch for ignition or light use. It is non-fused and includes a plastic knob. Part Number: SSW2809 Fits Allis Chalmers - Various Case - Various Cockshutt -...
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  • Allis-Chalmers Tractor Parts Catalog 2025, vintage farm tractor parts catalog cover with sunset landscape background.

    Allis Chalmers Tractor Parts Catalog

    Allis-Chalmers
    $0.00
    0000
    The Allis Chalmers Tractor Parts Catalog (2025) is a comprehensive parts guide for Allis Chalmers tractors. It is available as a hard copy and as a printable PDF catalog. Part Number: 0000 Current...
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  • Allis-Chalmers Camshaft Bearing Bushing Set for Allis-Chalmers B C CA IB RC, stainless steel engine components.

    Camshaft Bearing Bushing Set for Allis-Chalmers B C CA IB RC

    Allis-Chalmers
    $39.75
    AC-2757D
    Camshaft Bearing (bushing) Set for Allis-Chalmers B, C, CA, IB, and RC with 116 CI or 125 CI engines.This is a 3-piece set.Part Number: AC-2757DFitsAllis-Chalmers B, C, CA, IB, RC with 116 CI or 125...
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  • Allis-Chalmers Clevis Pin For Starter Switch Allis Chalmers

    Clevis Pin For Starter Switch - Allis Chalmers

    Allis-Chalmers
    $0.75
    97245A215
    Clevis pin for starter switch use across the listed tractor models.Includes the stated dimensions and starter switch fitment note.Part Number: 97245A215FitsAllis Chalmers - B, C, CA, G, IB, RC, WC,...
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  • Allis-Chalmers Seat Back Spring - Allis Chalmers IB, RC, WC, WF - KI1073

    Allis-Chalmers Seat Back Spring KI1073

    Allis-Chalmers
    $94.50
    KI1073
    Part Number: KI1073OverviewSeat back spring for Allis-Chalmers IB, RC, WC, and WF tractors. This seat back spring comes primered.FitsAllis-Chalmers IBAllis-Chalmers RCAllis-Chalmers WCAllis-Chalmers...
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  • Allis-Chalmers Allis Chalmers B IB C CA RC Manifold Stud Set with Brass Nuts

    Allis-Chalmers B IB C CA RC Manifold Stud Set with Brass Nuts

    Allis-Chalmers
    $37.75
    B001
    Manifold stud set with brass nuts for Allis-Chalmers tractors.Part Number: B001FitsAllis-Chalmers BAllis-Chalmers IBAllis-Chalmers CAllis-Chalmers CAAllis-Chalmers RCSpecs4 pcs = 3/8-16 x 3-1/2"...
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  • Allis-Chalmers Gas Tank Sealer - 1 Quart Can - ACR2043, a silver can with a blue and white label featuring the product name and warning notice.

    Gas Tank Sealer - 1 Quart Can

    Allis-Chalmers
    $69.99
    ACR2043
    Gas tank sealer in a 1 quart can.Part Number: ACR2043FitsAllis-Chalmers - VariousCase - VariousCockshutt - VariousFord - VariousInternational - VariousJohn Deere - VariousMassey Ferguson -...
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  • Allis-Chalmers Radiator Shutter Crank Assembly Kit Allis Chalmers B C CA IB WC WF WD WD45

    Allis-Chalmers Radiator Shutter Crank Assembly Kit

    Allis-Chalmers
    $79.75
    KI1099CRS
    Radiator shutter crank handle assembly kit for Allis-Chalmers tractors and AC power units.Part Number: KI1099CRSFitsAllis-Chalmers BAllis-Chalmers CAllis-Chalmers CAAllis-Chalmers IBServiceable for...
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  • Allis-Chalmers Rear Crankshaft Main Seal Allis Chalmers B IB C CA B125 70225805 225805

    Rear Crankshaft Main Seal for Allis-Chalmers B, IB, C, CA, RC

    Allis-Chalmers
    $15.75
    70225805
    Rear crankshaft main seal for select Allis-Chalmers tractors and AC equipment. Original felt style seal with the listed measurements.Part Number: 70225805FitsAllis Chalmers - B, IB, C, CA, RC (using...
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