will this replace a gear box for a farm king finish mower part #912300158

No, this is for a rotary cutter. The Farm King Finish Mower gearbox will use a keyed output shaft, where this is splined. Are there any numbers on the gearbox itself?

Need gear box for rottary tiller 48 inch

Unfortunately I do not carry any tiller gearboxes here.

Do you have a gear box that will fit a John Deere medium duty model 616 bush hog?

The 516/616 is a weird gearbox. it has a 6 bolt mounting pattern like a heavy duty gearbox and a 1.57" 12 spline output shaft like a 40hp box. For any gearbox that will fit the stump jumper, (blade holder), you will have to redrill the deck to mount it. Your box also has a longer output shaft the the standard aftermarket boxes, and the average replacement shaft may not be long enough for the blades to clear the deck well. If you want to explore this further, contact me at dawson@tractors-equipment.com. I would like to know how far the shaft extends below the deck.

Will this work on a Rhino SE 6 mower?

This is a 40 hp box and it will fit. If you have a slip clutch order the one with a 6 spline input shaft. If it uses a shear bolt order the one with a smooth input shaft.

Omni Gear Rotary Cutter 40 Hp Gear Box 1 3

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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¥145031

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Gear up your rotary cutter with unmatched power and precision!

PRECISION FIT - Standard 1 3/8" x 6 spline input shaft ensures seamless compatibility
READY TO MOUNT - Industry-standard four-bolt mounting with included blade carrier nut and cotter pin
SMOOTH OPERATION - High-speed ball bearing units reduce friction and enhance efficiency
DURABILITY ENGINEERED - Heat-treated gears and shafts for extended lifespan under tough conditions
POWERHOUSE PERFORMANCE - 40 HP gearbox engineered for heavy-duty rotary cutters

The Omni Gear Rotary Cutter Gearbox delivers 40 HP with a 1:1.47 speed-up ratio, designed for 5' and larger rotary cutters. Featuring a standard 1 3/8" x 6 spline input shaft and a 1.57" diameter 12 tapered spline output shaft, it fits most light to medium-duty rotary cutters. Built with heat-treated gears and high-speed ball bearings, this gearbox ensures long-lasting durability and smooth operation. Industry-standard four-bolt mounting and included hardware make installation straightforward. Ideal for professionals seeking reliable, high-performance rotary cutter upgrades.

Specifications

ASIN	B00J351HJQ
Best Sellers Rank	#316,055 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #96 in Gearboxes, Gearheads & Speed Reducers
Date First Available	March 18, 2014
Item Weight	44 pounds
Manufacturer	Omni Gear
Product Dimensions	15 x 9 x 15 inches

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