Skip to content

Gearbox Gear Case Fits John Deere Mower Deck 400 420 430 F710 F725 F735 AM133761

Save $ 76.38 Save $ 76.38
Original price $ 1,272.97
Original price $ 1,272.97 - Original price $ 1,272.97
Original price $ 1,272.97
Current price $ 1,196.59
$ 1,196.59 - $ 1,196.59
Current price $ 1,196.59
Aftermarket replacement part

Direct buying discount applied. Prices on our site are lower than our marketplace listings to reflect the absence of third-party platform fees.

The crossed-out price is our current listing for this item on those marketplaces — not a former flipmfg.com price.

Replaces OEM:

  • AM133761
  • AM100157
  • AM39377

Compatible with 60" deck only.

Will this fit your machine?

Models this fits (30)

Show 14 more models

Not sure? Start a guided fitment text to 903-320-4519 — we'll verify for free.

Mention part 705778 in your text so we know which one you mean.

Availability:
in stock, ready to be shipped
Free standard shipping · contiguous U.S.
Estimated standard delivery: See delivery information at checkout

Our standard 3–7 business-day transit estimate applies to in-stock items after dispatch.

Delivery details

Standard shipping is free within the contiguous U.S. The estimated delivery range uses our standard 3–7 business-day transit time after dispatch, with weekends and U.S. postal holidays excluded. Delivery varies by destination. It is not a guaranteed delivery date.

Need it sooner? Expedited options and prices are available at checkout. Shipping policy

Shipments to Canada require additional shipping costs with extended delivery times.

Top Quality Store on Google View details
60-day returns Prepaid label — no restocking fee
Secure checkout Major cards, PayPal, Apple Pay, and Shop Pay

Before you order

Make sure it fits.

Match the number stamped on your old part to the numbers listed here, then check that your machine's model is on the list. Not sure? Text us a photo of the old part and we will check it for you.

Part information

Product details.

What the part is made of, how it installs, and other details for this listing. Use the numbers and model list above to make sure it fits your machine.

About this replacement part

This aftermarket gearbox gear case is a replacement housing for the mower deck gearbox on compatible John Deere 60-inch deck applications. It supports and protects the gearbox components so the deck drive can transmit power properly to the blades.

Built to match OEM

The case is made to match the original housing shape, mounting locations, and gear case layout for a proper replacement fit. Mating surfaces and bolt points are designed to line up with the existing deck gearbox components without changing the deck structure.

Installation

Installation is a standard gearbox service job using normal shop tools and the correct service manual procedure. Clean the mounting surfaces, inspect related gears, bearings, seals, and hardware during reassembly, and no deck modifications should be needed when used on the correct 60-inch deck application.

Aftermarket replacement part. Not affiliated with or endorsed by an original equipment manufacturer. Verify the listed part number, model, dimensions, and serial notes before ordering.

FLIP SKU 705778

Customer reviews

Reviews for this part.

Read verified feedback, installation notes, and customer photos from this exact listing.

Before you order

Three details beat a hundred guesses.

Use the information on this page to verify the part before checkout.

1

Match the stamped number

Compare the OEM number, replacement number, or FLIP SKU shown above.

2

Confirm model and serial range

Check the model list and any serial number notes in the product details.

3

Get help when something is unclear

Share the model, serial number, and a photo. A Texas-based team member will help.