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<h2>Bad crankcase breather hose&nbsp;symptoms</h2>
Issues with the crankcase breather hose can manifest in various problematic symptoms. These include oil leaks, engine oil pollution, irregular idling or stalling, excessive oil consumption, heightened emissions, engine knocking or pinging, and decreased overall engine efficiency. The root cause is that a damaged or clogged vent hose can lead to pressure imbalances in the crankcase. This, in turn, forces oil out through unintended openings, contaminates the oil supply, and disrupts the engine's proper breathing and combustion.
Addressing problems with the crankcase breather hose is critical for maintaining engine health and performance. Any of the symptoms mentioned should prompt a thorough inspection and potentially replace this important component.
<h2 style="text-align: justify;">Crankcase breather hose replacement</h2>
<ol>
<li style="text-align: justify;">Locate and disconnect the old hose: Find the breather hose, typically running between the valve cover and air intake, and carefully disconnect it from both ends, loosening any clamps or fasteners.</li>
<li style="text-align: justify;">Inspect the old hose: Examine the removed hose for any cracks, holes, or signs of deterioration that may have caused the issue.</li>
<li style="text-align: justify;">Install the new replacement hose: Obtain the correct replacement hose and gently push it onto the valve cover and air intake connections, securing it in place with any necessary clamps or fasteners.</li>
<li style="text-align: justify;">Secure the new hose: Use zip ties or small hose clamps to hold the replacement breather hose firmly in place and prevent any movement or rubbing against other engine components.</li>
<li style="text-align: justify;">Check for leaks and clear codes: Start the engine and inspect the connections for any oil or air leaks, tightening if needed. Then use an <a href="https://a-premium.com/code-readers-and-scanners">OBD-II</a> scanner to clear any trouble codes that may have been set by the old, faulty hose.</li>
</ol>
<h2>Breathe easy with A-Premium</h2>
A-Premium's crankcase breather hose is built to withstand the rigors of the engine bay. Crafted from premium, heat-resistant materials, our hose offers superior durability and flexibility to outlast the competition. The precision-fitted design and airtight seals ensure optimal crankcase ventilation for improved engine efficiency and longevity. Corrosion-resistant construction and chemical compatibility make this breather hose a reliable choice you can trust. Backed by our industry-leading warranty, the A-Premium crankcase breather hose is the smart solution for maintaining peak engine health. Additionally, our commitment to you extends beyond just a 90-day return window and a 1-year warranty - our customer service team is on hand 24 hours a day, 7 days a week to address your needs.

Crankcase Breather Hose

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Air Filter Box

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Mass Air Flow Sensors/Car MAF Sensors | A-Premium

Air Flow Sensor

Air Intake Duct

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Air Intake Hose

Air Intake Manifold Actuator Control Solenoid

Air Intake Manifold Flap Adjuster

Air Intake Manifold Runner Control Sensor

Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

Intake Manifold Flap Actuator

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Intercooler

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Oxygen Sensor

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Pressure Sensor

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Throttle Body

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Throttle Position Sensor

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Turbocharger

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Turbocharger Oil Line

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Vacuum Pump

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Air Filters & Intake Systems

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Camshaft Adjuster

Camshaft Adjuster Cover

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Camshaft Timing Gear

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Camshafts

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Engine Valve Cover

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Harmonic Balancer

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Timing Belt Kit

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

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Valve Lifters Tappet

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Cams, Timing & Valvetrain

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Belt Tensioner

Coolant Level Sensor

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Crankcase Breather Valve

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Crankshaft Position Sensor

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Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

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Flywheel

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Oil Cooler

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Oil Cooler Line

Oil Filler Cap

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Oil Filter

Oil Filter Base

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Oil Filter Housing

Oil Filter Housing Cover

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Oil Level Sensor

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Oil Pan

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Oil Pump

Oil Pump Drive Gear Shaft

Oil Pump Pickup Tube

Cranks, Pistons, Oil & Components

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Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

Engine Valve Covers & Ignition Coils Kits

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Glow Plug Relay Module

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Ignition Coil

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Ignition Coils & Spark Plugs Kits

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Ignition Distributor

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Ignition Starter Switch

Ignition Switch Actuator

Knock Detonation Sensor

Relay

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Spark Plug

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Spark Plug Wire

Electronic Control Modules, Ignition & Distributors

Engine Wiring Harness

Intake Manifold Repair Kit

Engine Components & Accessories

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Auxiliary Water Pump

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Expansion Tank

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Expansion Tank Mounting Plate

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Fuel Cooler

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Radiator

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Radiator Hose

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Radiator Support Assembly

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Temperature Sensor

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Turbo Hose

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Water Coolant Pipe

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Water Outlet

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Engine Cooling

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Engine Mount

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Engine Mounts

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Catalytic Converter

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EGR Valve

Emissions Fluid Pump

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Exhaust Fluid Heater

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Exhaust Gas Temperature Sensor

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Exhaust Manifold

Fuel Tank Breather Valve

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Fuel Vapor Leak Detection Pump

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Nitrogen Oxide Sensor

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Secondary Air Injection Check Valve

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Vapor Canister Vent Solenoid

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Exhaust & Emission Systems

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Fuel Filter

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Fuel Injection Control Module

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Fuel Injection Pressure Regulator

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Fuel Injector

Fuel Injector Kit

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Fuel Injector Module Wiring Harness

Fuel Line Kit

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Fuel Pump

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Fuel Sending Unit

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Fuel Tank Filler Neck Pipe

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Fuel Tank Strap

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High Pressure Fuel Pump

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Idle Air Control Valve

Mechanical Fuel Pump

Oil Pressure Relief Valve

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Fuel Systems & Components

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The engine comprises many essential elements such as the lower cylinder block, upper cylinder head(s), and the cooling & lubricating systems. With A-Premium aftermarket engine components, you can expect that your engine deliver years of reliable performance. We offer a diverse selection of engine components from air filters and ignition coils (kits) to fuel pumps to cater to your needs.

Mercedes-Benz Crankcase Breather Hose