NISSAN 30855-WG11A Clutch Hydraulic Hose

The genuine NISSAN 30855-WG11A (alternative part number: 30855VB00C) clutch hydraulic hose is a critical component in the vehicle's hydraulic clutch system. Its function is to provide reliable and loss-free transmission of hydraulic pressure between the clutch master cylinder and the clutch slave cylinder when the clutch pedal is depressed.

Technical Features and Construction

This high-pressure hose is manufactured precisely in accordance with strict Nissan factory specifications, ensuring a perfect fit and long service life. Key features include:

• Material Composition: Multi-layer, fiber-reinforced synthetic rubber resistant to high hydraulic pressure and elevated engine compartment temperatures.
• Fittings: Precision-engineered, corrosion-resistant metal end fittings ensuring leak-free connections.
• Fluid Compatibility: Fully compatible with standard DOT 3 and DOT 4 brake and clutch fluids.
• Flexibility: Absorbs relative movements and vibrations between the engine and the chassis, preventing rigid hydraulic lines from suffering material fatigue and cracking.

Function of the Clutch Hydraulic Hose and Symptoms of Failure

Proper operation of the hydraulic clutch system is essential for smooth gear changes. Over time, rubber components can age, swell, or crack due to exposure to heat and internal pressure. Common symptoms of failure include:

• Soft, Spongy Clutch Pedal: Air enters the system, or the hose wall expands under hydraulic pressure.
• Difficult Gear Shifting: The clutch does not fully disengage, which can cause damage to the transmission.
• Visible Fluid Leaks: Moisture or weeping around the hose end fittings or on the rubber hose body.
• Low Clutch Fluid Level: Continuous loss of hydraulic fluid from the reservoir due to leakage.

To ensure safe and reliable operation, a damaged or worn clutch hose should be replaced immediately with a genuine OEM-quality part.