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Marketo Auto
Marketo Auto
A power steering hose is a critical component in vehicle hydraulic steering systems, designed to transport pressurized hydraulic fluid between the power steering pump, steering gear/rack, and reservoir. These flexible yet durable hoses withstand continuous exposure to high pressures (typically 150-1,500 PSI) and extreme temperature fluctuations (-40°F to +300°F).
Constructed with multiple layers:
Two primary types:
Proper maintenance is essential - deteriorated hoses can lead to fluid leaks, pump cavitation, or complete steering failure. OEM specifications mandate strict compliance with SAE J188 and ISO 11425 standards for safety and performance.
| Parameter Name | Description / Value | Remark |
| Material Structure | Inner: NBR/HNBR; Reinforcement: Fiber/Wire; Cover: Anti-aging rubber | High temperature & chemical resistance |
| Inside Diameter (ID) | 8 mm, 10 mm, 12 mm | Select by vehicle type |
| Outside Diameter (OD) | 14 mm, 16 mm, 18 mm | Tolerance ± 0.5mm |
| Working Pressure | 10 MPa ~ 20 MPa | Peak pressure up to 30MPa |
| Burst Pressure | ≥60 MPa | Safety factor ≥3 times |
| Temperature Range | -40°C ~ +120°C | Short-time tolerance 135°C |
| Length | 300 mm ~ 1500 mm | Customizable |
| Compatible Fluid | ATF (Automatic transmission oil), PSF (Power steering oil) | Dexron or ISO 7308 standards |
| Certification | ISO 11425, SAE J188, OEM specifications | Meets automotive durability tests |
| Life Cycle | ≥5 million pulse tests | Simulates 10 years/200,000 km |
