Hydro-Gear 52375 Hydraulic Expansion Tank Cap Assembly

The Hydro-Gear 52375 Cap Assembly is a genuine OEM replacement cap designed for hydraulic expansion tanks and reservoirs on zero-turn mowers and lawn tractors equipped with Hydro-Gear hydrostatic transmissions. This essential component provides a secure closure for hydraulic fluid containment while allowing proper venting and preventing contamination from dirt, grass, and debris.

Key Features:

• Genuine Hydro-Gear OEM part for guaranteed fit and performance
• Improved design with thicker plastic walls for enhanced durability
• Prevents contamination of hydraulic fluid from external debris
• Proper venting design maintains correct system pressure
• Direct replacement for worn or damaged expansion tank caps

This cap assembly is compatible with various commercial and residential zero-turn mowers from manufacturers including Cub Cadet, Gravely, MTD, Scag, and other equipment using Hydro-Gear hydrostatic transmissions. The updated design features reinforced construction that resists cracking and damage from over-tightening, addressing weaknesses found in earlier versions. Maintaining a properly sealed hydraulic reservoir is critical for transmission performance and longevity.