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Experiencing excessive heat in your car's engine? It's worth considering a thorough inspection of the radiator hoses as an initial step. The water pump pressurizes the coolant within your engine, and the radiator hoses have a vital role in the cooling system, as they transport the coolant to and from the radiator. Radiator hoses are crafted from durable, fabric-reinforced rubber, meticulously shaped to provide a precise fit for your engine. When you schedule your routine tune-up, be sure not to neglect the radiator and heater hoses - they are integral parts of your engine's cooling system.<h2>Radiator hose replacement</h2>Replacing a radiator hose is a manageable DIY task for many car owners, but it's essential to do it correctly to ensure the cooling system functions properly. Refer to this step-by-step guide when you are planning to change your broken radiator hose:<ol><li>Prepare your workspace: Ensure your car is on a level surface and has cooled down. Have the necessary tools and a bucket ready for coolant drainage.</li><li>Identify the hose: Locate the radiator hose that needs replacement. There are typically two hoses - an upper and lower one.</li><li>Drain the coolant: Position the bucket beneath the radiator drain valve, open it, and let the coolant drain into the container. Dispose of the old coolant properly.</li><li>Loosen hose clamps: Using a screwdriver or hose clamp pliers, loosen the hose clamps at both ends of the old hose. Slide them away from the hose connections.</li><li>Remove the old hose: Gently twist and pull the old hose off the radiator and engine fittings. If it's stuck, carefully cut it away without damaging the fittings.</li><li>Prepare the new hose: Inspect and trim the new radiator hose if needed. Ensure the hose ends are clean and free from debris.</li><li>Install the new hose: Slide the new hose onto the radiator and engine fittings. Place the hose clamps over the connections and tighten them securely but not overly tight.</li><li>Refill with coolant: Close the radiator drain valve and refill the radiator with the appropriate coolant mixture. Use a funnel to avoid spills.</li><li>Check for leaks: Start the engine and monitor the hose connections for any signs of leaks. If you spot any, turn off the engine and address the issue.</li><li>Dispose of old coolant: Dispose of the old coolant responsibly, following local regulations.</li><li>Final inspection: Ensure all hose clamps are properly secured, recap the radiator, and you're done.</li></ol>

Radiator Hose

Air Cleaner

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Air Filter Box

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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

Air Intake Resonator

Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

Intake Manifold Flap Actuator

Intake Manifold Repair Bracket

Intake Manifold Runner Control Valve

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Intercooler

Intercooler Hose

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Oxygen Sensor

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Pressure Sensor

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Supercharger Pulley Drive Unit

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Supercharger Snout Rebuild Kit

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Throttle Body

Throttle Cable

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Throttle Position Sensor

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Turbocharger

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Turbocharger Gasket Kit

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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

Camshaft Kit

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Camshaft Timing Gear

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Camshafts

Chain Tensioner Adjuster

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Cylinder Head

Cylinder Head Assembly

Eccentric Shaft Actuator

Engine Timing Belt

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Engine Valve Cover

Engine Valve Cover Gasket

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Harmonic Balancer

Rocker Arm

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Rocker Arm Shaft Lifter Assembly

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Timing Belt Kit

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Timing Chain Gear

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

Valve Cover Gasket

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Valve Lifter Guides

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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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Crank Installer Tool

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Crankcase Breather Hose

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Crankcase Breather Valve

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Crankshaft Position Sensor

Crankshaft Pulley

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Engine Oil Dipstick

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Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

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Flywheel

Harmonic Balancer Crankshaft Hub

Knock Sensor

Oil Baffle

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Oil Cooler

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Oil Cooler Line

Oil Drip Pan

Oil Filler Cap

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Oil Filter

Oil Filter Base

Oil Filter Cover

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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

Oil Separator

Serpentine Belt

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Cranks, Pistons, Oil & Components

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Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

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Electronic Ignition System

Engine Valve Covers & Ignition Coils Kits

Glow Plug

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Glow Plug Relay Module

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Ignition Coil

Ignition Coils & Spark Plugs & Wires Kits

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Ignition Coils & Spark Plugs Kits

Ignition Coils & Wires Kits

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Ignition Distributor

Ignition Lock Cylinder

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Ignition Starter Switch

Ignition Switch Actuator

Kill Switch

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

Pulley

Engine Components & Accessories

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Active Grille Shutter Actuator

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Auxiliary Water Pump

Drive Motor Inverter Cooler

Electric Engine Water Pump

Engine Coolant Air Bleeder Valve

Engine Coolant Pipe

Engine Coolant Shut Off Valve

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Expansion Tank

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Expansion Tank Mounting Plate

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Fan Pulley Bracket

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Fuel Cooler

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Overflow Hose Connector

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Radiator

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Radiator Control Fan Module

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Radiator Core Support Skid Bar Plate

Radiator Fan Cooling Motor

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Radiator Support Assembly

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Engine Cooling

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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.

BMW 420i Radiator Hose