Harvesting Parts Guides
How to Identify a Combine Header Knife Section Before Ordering a Replacement
To identify a combine header knife section, start with the stamped number, then compare tooth pattern, section length and width, thickness, mounting-hole count and spacing, hole diameter, back shape, serration style, cutting-system type and photos of both sides. Do not treat coarse-tooth, fine-tooth and different hole patterns as interchangeable without evidence.
Combine header knife sections are small parts, but small differences matter. A buyer may search for combine knife section replacement, sickle section replacement, coarse tooth knife section or harvester knife section. Those names describe a product family; they do not identify the exact replacement.
ARGODAYA lists TL-10978 Coarse-Tooth Header Knife Section as a stamped-reference inquiry item. The number, tooth pattern, mounting holes and cutting-system details should be checked before quotation or order confirmation.
What number identifies a header knife section?
Start with any stamped or etched number on the old section, old package or parts list. Photograph the number before cleaning if it is partly covered by dirt or wear. A supplier should know whether the inquiry is based on a stamped section number, an OEM catalog number or a buyer's previous stock code.
If the old section has no readable number, do not guess from tooth shape alone. Send both-side photos, hole measurements and header information so the part can be compared from visible evidence.
How do coarse tooth, fine tooth and serration style affect matching?
Knife sections may be coarse-tooth, fine-tooth, smooth, top-serrated, under-serrated or shaped for a particular cutting system. Coarse-tooth and fine-tooth wording helps describe the part, but it does not replace checking the part number and hole pattern.
Photograph the cutting edge close enough to show serration direction and tooth spacing. If the section has broken tips, send a photo of an undamaged sample from the same knife assembly if available.
What measurements should be provided?
Measure the old section length, width, thickness, hole diameter, center-to-center hole spacing and distance from hole center to key edges when the number is missing. Also count the holes and show whether the holes are round, slotted, countersunk or shaped.
Do not infer dimensions from a supplier image. Many knife sections look similar in a thumbnail but differ in hole spacing, section profile or back shape.
Knife Section Inquiry Checklist
| What to send | Why it matters |
|---|---|
| Stamped number or package number | Best starting point for combine knife section replacement review. |
| Both-side photos | Shows tooth pattern, back shape, hole style and wear pattern. |
| Hole count, diameter and spacing | Prevents selecting a section that cannot mount to the knife back. |
| Tooth and serration close-up | Helps compare coarse, fine, smooth or serration direction. |
| Section dimensions from the old part | Useful when the number is missing or uncertain. |
| Header make, model and cutting system | Provides context without replacing old-part comparison. |
Why does the cutting system matter?
A header may use different knife backs, guards, hold-downs, rivets, bolts or modular cutting systems. The section must match the way it mounts and works with the rest of the cutterbar. Send photos of the old section installed on the knife back if possible.
If the buyer is replacing many sections, list the quantity and whether the order is for individual sections, a knife assembly or a kit. Do not assume a single section listing includes rivets, bolts or guards unless product evidence says so.
What are common ordering mistakes?
- Ordering by coarse tooth wording only.
- Ignoring hole spacing or hole shape.
- Using a broken section as the only measurement sample.
- Assuming rivets, bolts, guards or knife backs are included.
- Treating a similar-looking section as interchangeable without checking the cutting system.
- Mixing individual section, knife assembly and kit requests in one unclear inquiry.
Related ARGODAYA references
The main related product for this guide is TL-10978 Coarse-Tooth Header Knife Section. If the stamped number is missing, use OEM Lookup where possible and send photos through Contact for sourcing review.
Sourcing inquiry CTA
Send the stamped number, photos of both sides, tooth close-up, hole count, hole spacing, section dimensions, header make and model, cutting-system notes, quantity and destination country.
Request a knife section review
Share the stamped number, tooth pattern, mounting-hole details, header information and quantity for sourcing review.
Send a harvesting-parts inquiryQuick Checklist
- Stamped or package number
- Both-side photos
- Tooth and serration close-up
- Hole count and spacing
- Section dimensions
- Header make and model
- Cutting-system notes
- Quantity and country
Common Ordering Mistakes
- Ordering by tooth wording only
- Missing hole-spacing measurements
- Assuming included hardware
- Confusing section and knife assembly
- Using only a damaged sample
Frequently Asked Questions
How do I identify a combine knife section?
Start with the stamped number, then compare tooth pattern, hole count, hole spacing, section profile, dimensions, cutting-system type and both-side photos.
Is coarse tooth the same as fine tooth?
No. Coarse-tooth and fine-tooth sections have different cutting-edge patterns and should not be substituted without supporting evidence.
Can I order sickle sections by photo only?
Photos help, but they should be supported by stamped number, hole measurements, dimensions, header model and cutting-system details.
Are rivets or bolts included with a knife section?
Do not assume that hardware is included. Confirm package contents from the product evidence or quotation.
Source Notes
- Official and manufacturer/distributor knife-section references were reviewed for product-family terms such as coarse tooth, sickle section, knife assembly and cutting-system context.
- No unsupported interchange, model or dimension claim is added for TL-10978.
Send a parts inquiry
Include the OEM number, machine model, serial number, old part photos, quantity, and destination country for application review.