URO 6170100370 Engine Crankcase Breather Pipe

Mercedes-Benz Crankcase Breather Pipe

This URO engine crankcase breather pipe restores the crankcase ventilation path on select Mercedes-Benz diesel models. It is built from polyethylene and formed with molded construction to maintain a secure routing path in the engine bay.

• URO part number 6170100370 for direct replacement use
• Polyethylene construction resists cracking from heat and oil vapor exposure
• Molded design helps maintain proper hose routing and fit
• Two hose connectors with 0.475 in. and 0.486 in. inside diameters
• Replacement for failed OE breather hose on Mercedes-Benz 300D, 300SD, and 300TD applications
• 24-month unlimited mileage warranty

Application Details

Compatible with 1981-1985 Mercedes-Benz 300SD, 1981-1985 Mercedes-Benz 300TD, and 1982-1985 Mercedes-Benz 300D. This crankcase breather pipe is a direct-fit service part for diesel engine crankcase ventilation repair, and the URO 6170100370 listing supports the same application across these Mercedes-Benz models.

When the original breather hose hardens, splits, or loses sealing integrity, crankcase vapors can escape through the ventilation system instead of being routed correctly. Replacing the hose helps restore proper crankcase breather function and hydrocarbon emission control.

Common Problems It Can Address

• Cracked or split crankcase breather hose
• Oil vapor leakage around the ventilation line
• Improper crankcase ventilation routing
• Emission control issues caused by a failed breather hose
• Loose or deteriorated hose connection points

Installation Notes

Inspect the mating hose ends and nearby ventilation components before installation. Confirm the molded routing matches the original layout and verify the connector diameters before seating the pipe. For Mercedes-Benz 300D, 300SD, and 300TD service, replace any hardened adjacent hoses at the same time if they show heat or oil damage.

Quality Assurance

URO backs this part with a 24-month unlimited mileage warranty. The replacement is made to restore crankcase breather function with materials selected to resist cracking and splitting in engine heat and oil vapor conditions.