Hydro-Gear BDU-21L-311 Transmission; Hydrostatic; BDU Click to zoom

Hydro-Gear BDU-21L-311 BDU Hydrostatic Transmission

MPN BDU-21L-311

Free shippingIn stockHydrostatic Transaxle

Overview

Hydro-Gear BDU-21L-311 is a genuine Hydro-Gear BDU hydrostatic transmission.

Order by the full model number on the Hydro-Gear label (BDU-21L-311). Hydro-Gear builds each model to an OEM specification and advises against substituting a different model, so match every character.

More on this series: How to find your Hydro-Gear part number · Shop all Hydro-Gear parts

Specifications

Brand Hydro-Gear (genuine)
Model / part number BDU-21L-311
Series BDU
Type Hydrostatic transmission

Service notes

  • Use the fluid your equipment maker specifies; fluid, capacity and procedures are in the Hydro-Gear service and repair manual for your unit (free Hydro-Gear service and repair manuals: hydro-gear.com/service-repair-manuals).
  • After installing a replacement unit, purge air from the system following Hydro-Gear's procedure and top up the oil.

Shipping and price

  • Free shipping (lower 48).
  • Low Price Guarantee: find a lower advertised price on a genuine Hydro-Gear BDU-21L-311 and we'll beat it by 5% (before purchase). Details.

Frequently asked questions

Where do I find my Hydro-Gear model number?

On the Hydro-Gear label on the unit. Current numbers look like BDU-21L-300; order the full number, including the suffix after the last dash. See how to find your Hydro-Gear part number.

Can I use a different model that looks the same?

Hydro-Gear strongly discourages using any model not originally specified by the mower maker; similar-looking units can differ internally. Order the exact number on your label.