TOYOTA 44360-60101 Power Steering Fluid Reservoir

The genuine TOYOTA (SKU: 44360-60101) power steering fluid reservoir (RESERVOIR ASSY, OIL) is a key component of the hydraulic power steering system. Its function is to securely store power steering fluid, compensate for the thermal expansion of fluid circulating through the system, and keep the hydraulic fluid continuously clean.

Technical Specifications and Construction

This premium quality genuine part (superseded/OEM part number: 4436060100) is manufactured according to the strictest factory specifications, ensuring a perfect fit and long service life:

• Material Composition: High-temperature and chemical-resistant reinforced polymer construction that withstands extreme engine bay temperatures and the chemical effects of hydraulic fluid.
• Integrated Filter Unit: Features a built-in internal fine filter that effectively screens out microscopic contaminants and wear particles, protecting the power steering pump and steering gear from premature wear.
• Connections: Precision-molded suction and return port connections to ensure completely leak-free operation.

Role and Importance of the Power Steering Reservoir

The reservoir serves not only as a fluid container but also stabilizes fluid flow. It prevents air from entering the hydraulic circuit (cavitation), which would otherwise cause noisy power steering pump operation, overheating, and ultimately a loss of steering assistance.

Typical Symptoms of Failure

Over time, the reservoir or its internal filter can degrade, leading to the following symptoms:

• Clogged Internal Filter: Stiff steering, inconsistent power assist, or whining and humming noises from the power steering pump due to inadequate fluid supply.
• Material Fatigue and Cracks: Aging plastic can crack under thermal expansion, causing power steering fluid leaks and dropping fluid levels.
• Foaming Power Steering Fluid: If air enters the system due to damage or compromised seals on the reservoir, the fluid will foam, drastically reducing steering efficiency.