Description
When you’re cutting hay with your New Holland 451 or 456 mower and the knife starts leaving uncut stems or making a jagged mess, it’s time for a fresh sickle bar. A worn-out knife not only slows you down but can damage your crop quality—and nobody wants that when hay prices are good. This complete 9-foot replacement gets your mower back to making clean, efficient cuts.
What You’re Getting
- Complete bolted knife assembly with 35 sections for reliable cutting performance
- Extra coarse 7-tooth serrations that grab and slice tough stems without clogging
- Top serrated design that cuts aggressively in heavy or lodged hay conditions
- Bolted construction lets you replace individual sections instead of the whole knife
- Direct replacement that fits your double guard setup perfectly
Built for Real Hay Work
Your New Holland 451 and 456 mowers were built to handle everything from light pasture grass to heavy first-cutting alfalfa. This knife is designed for those same demanding conditions, whether you’re cutting roadside hay or working through thick stands that would bog down lesser equipment.
Made to Last
The extra coarse serrations stay sharp longer than fine-tooth sections, especially in abrasive conditions. The bolted design means when you do hit that rock or fence post, you’re only replacing a few sections instead of the whole knife. Quality steel construction handles the constant flexing and vibration that comes with sickle bar mowing.
Installation Notes
This is a direct bolt-on replacement for your existing knife. When installing, check your guards for wear and make sure they’re properly aligned—a knife is only as good as the guards that support it. Keep a few spare sections on hand for field repairs, because rocks have a way of finding your knife when you least expect it.
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