Hydro-Gear Expansion Tank Kit Hand Transmissions

Hydro-Gear expansion tank kits are genuine OEM replacement components for Hydro-Gear hydrostatic transmissions and transaxles used in outdoor power equipment. Also called an oil reservoir or expansion bottle kit, the expansion tank gives the transmission oil room to expand as it heats up. That helps keep the housing full of oil at operating temperature.

Key Features:

• Genuine Hydro-Gear OEM part: Built to the manufacturer's specifications for use with Hydro-Gear drive systems.
• Manages fluid expansion: Accommodates oil expansion and contraction during normal operation.
• Helps reduce air entrainment: Hydro-Gear describes the expansion tank as letting the transaxle run free of air entrainment while keeping the mechanical and hydraulic components lubricated.
• Easy fluid checks: An external tank makes it easier to check and top off the transmission oil level.
• Replacement and service use: A good choice when an existing tank is cracked, damaged, or leaking, or when the tank is being replaced during transmission service.

A working expansion tank helps protect your hydrostatic drive from overheating, poor lubrication, and the performance problems that come with air in the oil. Choose the specific part number for your transmission model from the options on this page.