ProductPart overview
Built around the part record, not a generic listing
WEIGHT:27KG APPLICATION:CLAAS HEARDER:18'-30',25‘-30’,3.9M,4.1M,5.4M,7.5M,9M
Primary OEM
643656.1
Replacement references
643686.3
Compatibility
Check machine fitment
Model records help narrow the match. Machine year, serial number, header configuration, and prior modifications may still matter.
Check listed fitment
Select a model from this part's compatibility records. A missing model is not proof that the part will not fit.
Fitment data is being verified
Send the OEM number, machine model, year, and serial number. We will confirm the match before quoting.
Verify fitmentTechnical data
Specifications and dimensions
- Part weight
- 27 kg / 59.525 lb
- source
- express_publish
- data_quality
- [object Object]
- supplier_sku
- null
- last_stock_check
- 2026-07-17T07:30:35.890Z
- original_source_row
- 3
- original_source_file
- CLASS 6.15.xlsx
- original_source_sheet
- Sheet1
- raw_compatibility_text
- WEIGHT:27KG APPLICATION:CLAAS HEARDER:18'-30',25‘-30’,3.9M,4.1M,5.4M,7.5M,9M
- skipped_reference_numbers
Additional technical values are available on request.
Order planning
Shipping and supply
Shipping confirmed with quote
Availability is checked before fulfillment.
Fitment before fulfillment
For uncertain matches, include machine model, year, and serial number in the quote request.
Aftermarket replacement part. OEM numbers are for reference only. FieldFit Parts is not affiliated with or endorsed by the original equipment manufacturers. Verify fitment before installation.
Still comparing part numbers?
Send the OEM number and machine details. We will help verify the match.