Description
Nothing stops field work faster than a transmission that won’t shift between ranges. If you’re hearing grinding noises when you try to switch from low to high range, or if your 398 or 399 won’t engage properly, this 18-tooth replacement gear is likely what you need to get back to smooth shifting.
What You’re Getting
- Precision-cut 18 teeth that mesh perfectly with your existing gears
- Hardened steel construction built to handle the torque your tractor dishes out
- Direct replacement part – no modifications or guesswork needed
- Restores proper range selection so you can use all your tractor’s speed options
- Critical component that makes high/low range operation possible
Where This Part Shines
Your 398 and 399 are workhorse tractors that handle everything from heavy tillage to transport duties. The range box gives you the flexibility to creep along for precision work or cruise at road speeds between fields. When this gear wears out, you lose that versatility and might find yourself stuck grinding along in one range, burning extra fuel and time.
Made to Last
Range box gears take incredible abuse – they’re transferring all your engine’s power while handling constant shifting, often under load. This replacement features proper heat treatment and precise machining so it’ll engage smoothly without the grinding and clashing you get with worn gears.
Good to Know
Range box work means splitting the tractor, so most folks tackle this during other major service work. While you’re in there, inspect all the mating gears – replacing just one worn gear won’t solve your problems if the others are damaged too. Clean everything thoroughly before assembly, and don’t forget to refill with fresh gear oil when you’re done.
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