3121549R1
Gear shift lever knob (ball) for International Harvester Cub, Cub Lo-Boy, A, AV and 57 more
Also found as 53717DA , 10A13578
Original part (OEM)
Not checked yet
PorkForge replacement
Not made yet
Part facts
- Original part number
- 3121549R1R1
- Manufacturer
- International Harvester (Farmall)
- Part type
- Knobs · Control knobs and handles
- System
- Operator controls
- Material
- rubber (common replacement version)R3
- Notes
- Ball knob for the main gear shift lever on most Farmall and International tractors from the A and Cub through the Hundred series, the 300 to 660 and the 404 to 884 utility models. Two sellers list it as 3121549R1, and one also as 53717DA, which a Cub forum member found in parts catalog TC-37A (dated 5-2-49) as the gear shift lever ball. Reproductions cost $7 to $10, and one seller had it on back order. Cheap competition makes a physical copy unattractive; a wartime steel version is a separate collector item.
- Last reviewed
- Oct 27, 2026 · record pf-ih-0003
Dimensions How to measure this part
Fits these machines
Where to find one today
Why it is hard to get
Can this part be made again?
EligiblePhysical replacement
Hand-grip knob, not structural. Thread and material unmeasured; common replacements are rubber. Reproductions at $7-10 leave little room for a printed part, so a digital file is the better fit.
Candidate materials: TPU (other fabricator), PETG (confirmed by test-fitting).
EligibleSTL / FreeCAD file
Can be offered as a printable file and an editable FreeCAD model once the measurements are verified.
Sources
- Precision Tractor Parts: Fasteners, Attachments & Miscellaneous (category page)
- Burch Store Tractors: New Gear Shifter Knob for IH Farmall A ... 300 Tractors
- Farmall Cub Forum: cub shifter knob???? (2010)
Not affiliated with or endorsed by International Harvester or its successors. The name is used only to identify compatibility. Part numbers are shown for reference. Check fit against your own machine. Spot a mistake?
Verification checklist (4 of 8 met)
- ✕ OEM part number not yet verified from an OEM or dealer source
- ✓ Cited by two websites, or by an OEM or dealer source
- ✓ At least one compatible model with a source
- ✓ 3 kinds of fact beyond the name (material, cross-references, aftermarket prices); 3 needed
- ✕ Original availability not yet checked
- ✓ Text and title are distinct
- ✕ On hold: Cites precisiontractorparts.com, whose robots.txt now blocks AI crawlers; re-source or verify by hand
- ✕ Not yet reviewed and signed off for search
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