---
product_id: 129463499
title: "Patco 40hp Gearbox with 1-3/8\" X 6 Spline Input Shaft and 1.57\" X 12 Spline Output Shaft"
brand: "patco"
price: "25475644₫"
currency: VND
in_stock: true
reviews_count: 6
category: "Patco"
url: https://www.desertcart.vn/products/129463499-patco-40hp-gearbox-with-1-3-8-x-6-spline
store_origin: VN
region: Vietnam
---

# 1.57" x 12 spline output shaft 4-bolt 4.75" mounting 40hp power rating Patco 40hp Gearbox with 1-3/8" X 6 Spline Input Shaft and 1.57" X 12 Spline Output Shaft

**Brand:** patco
**Price:** 25475644₫
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your rotary cutter’s heart with precision power!

## Quick Answers

- **What is this?** Patco 40hp Gearbox with 1-3/8" X 6 Spline Input Shaft and 1.57" X 12 Spline Output Shaft by patco
- **How much does it cost?** 25475644₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/129463499-patco-40hp-gearbox-with-1-3-8-x-6-spline)

## Best For

- patco enthusiasts

## Why This Product

- Trusted patco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable & Dependable:** Engineered for longevity in tough field conditions, minimizing downtime and maximizing productivity.
- • **Powerful 40hp Performance:** Handles rotary cutters up to 45hp, ensuring reliable torque for demanding professional use.
- • **Precision Fit, No Guesswork:** Designed exclusively for 4-bolt mounting gearboxes with exact 4.75" hole spacing—no universal compromises.
- • **Versatile Brand Compatibility:** Fits major names like John Deere, Kubota, Bush Hog, and more—upgrade without hassle.
- • **Dual Spline Shaft Compatibility:** 1-3/8" x 6 spline input and 1.57" x 12 tapered spline output shafts for seamless integration with top brands.

## Overview

The Patco 40hp Gearbox is a high-performance replacement gearbox tailored for rotary cutters with 4-bolt mounting and specific spline shaft dimensions. Rated for 40-45hp, it features a 1-3/8" diameter input shaft with 6 splines and a 1.57" diameter output shaft with 12 tapered splines, delivering a 1:1.47 speed-up ratio. Compatible with leading brands like John Deere, Kubota, and Bush Hog, it ensures a precise fit and reliable power transfer for professional-grade equipment.

## Description

Replacement Rotary Cutter gearbox, 40/45hp rated, 1-3/8" - 6 spline input shaft, 1.57" X 12 tapered spline output shaft and 1:1.47 speed up ratio for most rotary cutters with slip clutch PTO drivelines.. Fits Fred Cain, WAC, Big Bee, New Holland, John Deere, Kubota, Land Pride, Rhino, Bush Hog and many more brands. These gearboxes can have a square, round or 5 Sided housing and all are interchangeable with the same mounting patters, gear ratio, and shaft dimensions. If your gearbox has a 1.57" diameter by 12 spline output shaft and a 1-3/8 - 6 spline input shaft this gearbox will work. Bolt pattern is 4-3/4" on center hole to hole and 6-3/4" center to center of bolt hole on diagonal. Thefour (4) mounting holes form a square bolt pattern. THIS IS NOT A UNIVERSAL FIT GEARBOX, IT WILL ONLY REPLACE 4 BOLT MOUNTING GEARBOXES WITH A 1-3/8" BY 6 SPLINE FRONT SHAFT AND A 1.57" BY 12 SPLINE BOTTOM SHAFT. PLEASE COMPARE DIMENSION AND SHAFT SPECIFICATIONS BEFORE BUYING!

Review: Very impressed worked for my wolverine brush hog - I work for a local tree service and we have a wolverine brush hog and needed to replace the gear box and after not being able to get a new one I needed to do a little modification but hight and everything worked just need to cut pto spline down but would definitely recommend 👍
Review: Great product fixed my old cutter - Great product fast shipping. On older John Deer models (403) and those like it. There is a ring where the old gear box mounted that will need to be cut out.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B075Y3ZJ8V |
| ASIN  | B075Y3ZJ8V |
| Best Sellers Rank | #567,873 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #11,333 in Agricultural Machinery Spare & Replacement Parts |
| Customer Reviews | 4.5 4.5 out of 5 stars (34) |
| Date First Available | September 26, 2017 |
| Date First Available  | September 26, 2017 |
| Is Discontinued By Manufacturer | No |
| Is Discontinued By Manufacturer  | No |
| Item Weight | 48 pounds |
| Manufacturer | Patco |
| Manufacturer  | Patco |
| Package Dimensions | 16 x 10 x 9 inches |
| Package Dimensions  | 16 x 10 x 9 inches; 48 Pounds |

## Images

![Patco 40hp Gearbox with 1-3/8" X 6 Spline Input Shaft and 1.57" X 12 Spline Output Shaft - Image 1](https://m.media-amazon.com/images/I/51Niie6bFwL.jpg)

## Questions & Answers

**Q: I have a jcct xh30.192z.01l gearbox 1/1.92 ratio 6 spline horizontal and 12 spline vertical shafts  off a 72' wolverine hydraulic mower will this fit?**
A: I put this on the same mower, you’ll have to drill 2 new holes. Works great have about 40 hrs on it with no issues

**Q: The measurement is the same but the imput shaft has 1" thats smooth then 6 spline, will this work?**
A: That will depend on the type of slip clutch PTO shaft you have, If you slip clutch just mounts onto the splined shaft and has a bolt that cinches it ( locks it) to the shaft this gearbox will work, if your sli clutch slides on the shaft and has a circlip or snap ring that installs to the groove just past the smooth tip on the gearbox this unit will not work! If you still are not certain please give us a call at 513-715-0531 and we can discuss the mounting of the clutch in more detail.

Thank you,
Thank you

**Q: will this fit a Landpride  FDR 1672 finish mower**
A: No, It won't fit. The Finish mower generally uses a gearbox with a smooth, keyed output (pulley) shaft. They usually turn the blade pulleys clockwise. Rotary cutters (brush hogs) turn counter clockwise.
The ratios are generally higher than a brush hog bog, in the 1:1.92 rpm minimum, up to 1:2.85, some even will turn a 1:3.0 rpm

**Q: What is the distance from center of input to bottom of mounting flange**
A: 6-7/16” to the centerline of the input shaft from the bottom of the mounting flange

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very impressed worked for my wolverine brush hog
*by S***. on July 2, 2021*

I work for a local tree service and we have a wolverine brush hog and needed to replace the gear box and after not being able to get a new one I needed to do a little modification but hight and everything worked just need to cut pto spline down but would definitely recommend 👍

### ⭐⭐⭐⭐⭐ Great product fixed my old cutter
*by G***T on October 3, 2020*

Great product fast shipping. On older John Deer models (403) and those like it. There is a ring where the old gear box mounted that will need to be cut out.

### ⭐⭐⭐ Still worth the money
*by E***R on December 22, 2019*

Worked well but after 25 hours of us the flange that holds the gears in broke. Probably because a piece of rock hit it.

## Frequently Bought Together

- Patco 40hp Gearbox with 1-3/8" X 6 Spline Input Shaft and 1.57" X 12 Spline Output Shaft
- Stump Jumper/Flywheel 12 Splined Hub

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-03-08*