Komatsu Dozer Blade Cutting Edges parts list
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D51EX-22, D51EX-24, D51PX-22, D51PX-24 |
Cutting Edge End Bit |
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12Y-72-11210 |
$85.00
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D51EX-22, D51EX-24, D51PX-22, D51PX-24 |
Cutting Edge Center (30" Wide) |
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12Y-72-11220 |
$171.00
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D51EX-22, D51EX-24, D51PX-22, D51PX-24 |
Cutting Edge Center (36" Wide) |
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12Y-72-11230 |
$205.00
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D31EX, D31P, D31PX, D31Q, D37EX, D37PX, D39EX, D41E, D41E6T, D41P, D41PF |
Cutting Edge End Bit |
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11G-71-31170 |
$48.00
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D31A, D31AM, D31E, D31EX, D31P, D31Q, D37A, D37E, D37EX, D39EX, D39PX, D40A, D40F, D40P, D40PF, D40PL, D41A, D41E, D41E6T, D41P |
Cutting Edge Center (29-7/8" Wide) |
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12F-70-31251 |
$118.00
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D30AM, D31A, D31AM, D31E, D31EX, D31P, D31PG, D31PX, D31Q, D37A, D37E, D37EX, D37P, D37PG, D37PX, D39PX, D40A, D40AM, D40P, D40PF, D41A, D41E, D41E6T, D41P, D41PF |
Cutting Edge Center (35-7/8" Wide) |
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12F-70-31261 |
$126.00
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D31A-17, D31A-20, D31P-17, D31P-18, D31P-20, D31E-17, D31E-18, D31E-20, D31EX-21, D31PX-21, D37PX-21, D39EX-21 |
Center Cutting Edge (47-7/8" Wide) |
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12F-70-31281 |
$135.00
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Various |
Cutting Edge Bolt (5/8" x 2-1/2") |
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4F3656 |
$2.00
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D3, D3B, D4C, D4G, D5C, D5G, 416B, 350B, 350C, 350D, 310, 410L, D31, D37, D39, D41, 1150E |
Cutting Edge Nut (5/8") |
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4K0367 |
$2.00
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Blade cutting edges, end bits, and hardware for Komatsu crawler dozers — including center sections, end bits, cutting edge bolts, and nuts for D31, D37, D39, D40, D41, and D51 series machines. Parts cover a wide range of blade configurations across multiple generations of Komatsu dozers commonly used in grading, land clearing, and site preparation applications.
Fits Models At A Glance
- D31 Series: D31A-17, D31A-20, D31AM, D31E-17, D31E-18, D31E-20, D31EX, D31EX-21, D31P-17, D31P-18, D31P-20, D31PG, D31PX, D31PX-21, D31Q
- D37 Series: D37A, D37E, D37EX, D37P, D37PG, D37PX, D37PX-21
- D39 Series: D39EX, D39EX-21, D39PX, D39PX-21
- D40 Series: D30AM, D40A, D40AM, D40F, D40P, D40PF, D40PL, D41A, D41E, D41E6T, D41P, D41PF
- D51 Series: D51EX-22, D51EX-24, D51PX-22, D51PX-24
Key Notes
- Part Types: Center blade cutting edges, end bits, cutting edge bolts, and cutting edge nuts
- Hardware: 5/8" x 2-1/2" bolts and 5/8" nuts included for blade and hardware replacement
- Application: Straight blade, angle blade, and power-angle-tilt blade configurations across covered models
- Fitment: Verify blade type and machine series before ordering — center sections and end bits are not interchangeable across all models
Why Choose Broken Tractor
- ✅ Competitive pricing on Komatsu dozer wear parts
- ✅ Wide fitment coverage across D31–D51 series dozers
- ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH
Frequently Asked Questions
What cutting edge fits a Komatsu D51PX-24 dozer?
Broken Tractor carries a 30 inch center cutting edge (12Y-72-11220), a 36 inch center cutting edge (12Y-72-11230), and an end bit (12Y-72-11210), all listed for the Komatsu D51EX-22, D51EX-24, D51PX-22 and D51PX-24. Measure your existing center section or match the part number to choose between the 30 inch and 36 inch edge before ordering.
Are Komatsu D31 dozer cutting edges interchangeable between models?
Not always, because center sections and end bits do not interchange across every Komatsu model and blade type. For example, center edge 12F-70-31281 is listed for the D31A-17, D31A-20, D31P-17, D31P-18, D31P-20, D31E-17, D31E-18, D31E-20, D31EX-21, D31PX-21, D37PX-21 and D39EX-21, while 12F-70-31251 and 12F-70-31261 cover a wider range of D31 through D41 machines. Confirm your machine series and blade type, then match the part number on your old edge, or call (800) 909-7060 to confirm with the parts team.
What end bits fit a Komatsu D31EX, D37EX, D39EX or D41E?
End bit 11G-71-31170 is listed for the Komatsu D31EX, D31P, D31PX, D31Q, D37EX, D37PX, D39EX, D41E, D41E6T, D41P and D41PF. For D51EX and D51PX machines, end bit 12Y-72-11210 is the matching part. Check your blade type and model before ordering, since end bits are not shared across all series.
What size bolts and nuts hold the cutting edge on a Komatsu D31 or D41 dozer?
We carry 5/8 inch by 2-1/2 inch cutting edge bolts (SKU 4F3656) and 5/8 inch cutting edge nuts (SKU 4K0367) for blade hardware replacement. The 4K0367 nut is listed for the Komatsu D31, D37, D39 and D41. Compare the bolt diameter and length to your existing hardware to confirm a match before ordering.
Which Komatsu D40 and D41 dozers use center cutting edge 12F-70-31261?
Center cutting edge 12F-70-31261 is listed for the Komatsu D30AM, D40A, D40AM, D40P, D40PF, D41A, D41E, D41E6T, D41P and D41PF, along with many D31, D37 and D39 models. Broken Tractor also carries 12F-70-31251, which covers the D40A, D40F, D40P, D40PF, D40PL, D41A, D41E, D41E6T and D41P. Since fitment varies by blade configuration, match the part number on your current edge to choose the right one.
