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<h2>What is a blend door actuator?</h2>The blend door actuator is a crucial component in a vehicle's climate control system, tasked with regulating the temperature of air entering the cabin. This electronic actuator employs a small motor to meticulously position a blend door, which manages the blend of hot and cold air. Integrated with the HVAC system, the actuator receives signals from the vehicle's computer to adjust the door for the desired temperature. Engineered with longevity in mind, the blend door actuator offers dependable, long-lasting performance, enabling the climate control system to deliver precise temperature adjustments throughout the lifetime of the vehicle.<h2>Bad blend door actuator symptoms</h2><ul><li>Wrong temperature - The blend door actuator's inability to properly regulate the hot/cold air mixture leads to the cabin temperature being inaccurate or unstable.</li><li>Knocking - Mechanical issues with the actuator's internal components can cause a knocking or clicking sound to emanate from the dashboard area.</li><li>Production of noise from the dashboard - Malfunctions in the actuator may generate audible noises originating from the dashboard where the component is located.</li><li>Unreliable airflow - A failing actuator cannot precisely control the blend door, resulting in inconsistent or unpredictable airflow being delivered to the cabin.</li><li>Unpredictable temperature - Without the actuator's ability to accurately regulate the temperature, the air reaching the passengers will fluctuate in warmth or coolness.</li><li>Frozen blend doors - In extreme cases, a malfunctioning actuator can cause the blend doors to become stuck in a fixed position, and unable to adjust.</li><li>Wear and tear - Over time, the normal wear and tear on the actuator's internal mechanisms can degrade its performance and reliability.</li></ul><h2>Explore A-Premium car parts</h2>A-Premium's blend door actuator is engineered to deliver exceptional climate control capabilities for your vehicle. Crafted with high-quality materials, this actuator operates smoothly and quietly, seamlessly adjusting the blend door to maintain your desired cabin temperature. Our commitment to you extends beyond just a 90-day return window and a 3-year warranty - our customer service team is on hand 24 hours a day, 7 days a week to address your needs. Experience the difference with the A-Premium Blend Door Actuator &ndash; Engineered for Precise Climate Control.

Blend Door Actuator

Air Cleaner

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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

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 Hose

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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.

1999 Mercedes-Benz ML320 Blend Door Actuator

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