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2003 Kia Optima parts

Common replacement parts for the 2003 Kia Optima, what usually wears out, a general maintenance schedule, and where to shop. Parts can differ by engine, trim and build date, so confirm fitment with your VIN before you buy.

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Popular parts

Brakes

Ignition & Starting

Electrical & Charging

Cooling

Belts & Pulleys

Serpentine Belt

Engine

Fuel System

Air Intake & Turbo

Maintenance

Exhaust & Emissions

Catalytic Converter

Sensors & Modules

Steering

Outer Tie Rod End

Suspension

Drivetrain & Axles

CV Axle Shaft

Heating & A/C

Lighting

Body & Exterior

Wiper Blades

General maintenance schedule

These are common starting intervals, not a factory schedule for your engine. Your owner's manual always wins.

Engine oil & filter	Every 5,000 miles or 6 months Use the oil grade and spec in your owner's manual. Some engines allow longer.
Tire rotation	Every 7,500 miles or 6 months Also a good time to check tread depth and pressures.
Brake inspection	Every 12,000 miles or 1 year Pads, rotors, lines and fluid level.
Cabin air filter	Every 15,000 miles or 1 year Sooner if the airflow smells musty or feels weak.
Engine air filter	Every 20,000 miles or 2 years Sooner on dusty or gravel roads.
Wiper blades	Every 1 year
12V battery test	Every 3 years Most 12V batteries last 3 to 5 years. Test before winter.
Brake fluid flush	Every 30,000 miles or 2 years Brake fluid absorbs moisture over time.
Spark plugs	Every 60,000 miles Iridium or platinum plugs often go 100,000 miles. Check the manual.
Transmission fluid	Every 60,000 miles Interval varies a lot by transmission. Check the manual.
Coolant flush	Every 60,000 miles or 5 years Some long-life coolants go 100,000+ miles.
Serpentine belt	Every 90,000 miles Inspect for cracks at every oil change.
Timing belt (if equipped)	Every 90,000 miles or 7 years Skip if your engine has a timing chain. Check the manual.

Safety recalls

NHTSA lists 2 recalls for the 2003 Kia Optima. Recalls apply by model year, and not every vehicle of that year is affected. Check your own VIN at nhtsa.gov/recalls.

FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY (04V180000): SOME PASSENGER VEHICLES MAY CONTAIN A FUEL TANK ASSEMBLY VALVE THAT MAY NOT CLOSE PROPERLY. IF A VEHICLE WITH A FUEL TANK ASSEMBLY VALVE THAT IS NOT PROPERLY CLOSED WERE TO ROLL OVER, FUEL SPILLAGE MAY OCCUR.
SUSPENSION:FRONT (09V183000): KIA MOTORS CORPORATION (KMC) IS RECALLING 36,538 MODEL YEAR 2001-2004 OPTIMA VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, ILLINOIS, INDIANA, IOWA, MAINE, MARYLAND, MASSAC…

Other Kia Optima years

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