Blow-By Hose Replacement for Nissan

Why Is This Hose So Important

This hose is essential for managing the engine’s ventilation system. It routes excess gases from the crankcase back into the intake, preventing pressure buildup and helping reduce emissions. Keeping this hose intact ensures your engine runs cleaner and meets emission standards.

How Does It Work

When your engine runs, combustion gases can leak past the piston rings. This hose carries those gases out of the crankcase and sends them back to the intake manifold. This process keeps the crankcase pressure balanced and minimizes harmful emissions.

What Happens If the Hose Fails

• Oil leaks may develop
• Engine could idle roughly
• Check engine light could come on
• Poor fuel efficiency
• Increased emissions risk

Don’t ignore a cracked or leaking hose—it can quickly lead to bigger (and costly) engine problems.

Compatible Models

• Versa
• Sentra
• Tiida
• Nv200 Taxi
• Versa Sedan
• Nv200
• Tiida Sedan
• Livina