TO 00591-04738-81

Frequently Asked Questions

Q: What is the TO 00591-04738-81 gasket used for?
A: The TO 00591-04738-81 is a Toyota OEM seal gasket for the electric lift truck power unit interface. It creates a pressure-tight, leak-free seal between power unit components such as the motor housing, reduction gearbox, or hydraulic pump mounting surfaces.

Q: What are the gasket dimensions and material?
A: The TO 00591-04738-81 has a nominal thickness of 0.86 mm with a diameter of 80.5–81.5 mm. The material is high-density compressed fiber, rubberized, designed for fluid sealing and durability under continuous motor-driven load cycles.

Q: How long does this gasket typically last?
A: Gasket lifespan depends on temperature exposure, fluid chemistry, vibration, and bolt torque. In typical warehouse environments, OEM gaskets last 3-7 years. High-temperature or high-cycle applications may reduce lifespan; inspect regularly for weeping or leaks.

Q: Is there a cross-reference for this part?
A: No cross-reference or supersession data is available from Toyota or authorized industrial distributors. This is a Toyota OEM replacement specification gasket. For compatibility confirmation, verify the sealing interface diameter and part location on your power unit.

Q: What fluid is this gasket compatible with?
A: The high-density fiber construction with rubber lining is compatible with hydraulic oils, motor oils, and water-soluble coolants used in Toyota electric lift truck systems. Verify your power unit fluid type in the equipment manual.