MitsubishiGalant20032.4L/mitsubishi/galant/2003/2-4l/

2003 Mitsubishi Galant — 2.4L

Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 2003 Galant 2.4L.

Body PASSENGER CAREngine 2.4LTransmission Automatic 4-spd

The 2003 Mitsubishi Galant is a passenger car powered by a 2.4L four-cylinder engine, paired with a four-speed automatic transmission, requiring 4.5 quarts of 10W-30 or 5W-30 oil and delivering EPA ratings of 19 city, 25 highway, and 21 combined mpg. With 139 owner complaints—visibility being the most frequently reported issue—and three recalls, this model year falls between the Galant’s highest complaint year of 1994 (263 complaints) and its lowest of 2011 (3 complaints), indicating a middling reliability record within the model’s 1990–2012 production span.

Model year201220112010200920082007200620052003

Quick specs

Fluid capacities, tune-up values and fuel economy at a glance.

Engine oil capacity4.5 qtOEM · verified
Engine oil type10W-30 / 5W-30 APIOEM · verified
Lug nut torque65-80 ft-lbsOEM · verified
EPA fuel economy19/25/21 mpgEPA · verified

Fitment & sizes

Replacement part sizes and factory part numbers — battery, bulbs, filters and belts.

From the factory this vehicle uses a BCI 86 · 525 CCA battery, OE oil filter MZ690116. Each part links to every other vehicle that shares it, so a part you already stock may fit more of your fleet than you'd expect.

Battery groupBCI 86 · 525 CCAOEM · verified
Tire sizeP205-55R16OEM · verified
Wheel / rim6-JJ inOEM · verified

OE service part numbers OEM · verified

Engine oil filterMZ690116 alt MZ690072
Engine air filterMB906051
Fuel filterMR993092
Spark plugMD313442 alt MS851728
Front wiper bladesMZ693015 alt 8250A536
Serpentine beltMN187016 alt MN187017
ThermostatMD350415 alt MD328070

Full specifications

Engine, drivetrain, dimensions and economy.

Engine & drivetrain NHTSA vPIC

TransmissionAutomatic 4-spd

Dimensions & weight NHTSA vPIC

Overall length188.2 in
Overall width68.5 in
Overall height55.9 in
Wheelbase103.9 in
Curb weight3031 lb
Track (front / rear)59.1 / 58.7 in
Weight distribution (front / rear)62/38

Ratings & economy EPA / vPIC

EPA city / highway / combined19 / 25 / 21 mpg
DrivetrainFront-Wheel Drive
Passenger volume96 cu ft
Cargo volume14 cu ft
Recommended fuelRegular Gasoline

Performance & power Independent road tests

0–60 mph, quarter-mile, horsepower and torque from independent road tests.

No 2003 road test on record; the results below are same-engine tests from nearby model years, each shown under its own year.

9.0–9.2 sec0–60 mph (tested)quickest 9.00 sec — 2009 Sport Edition Sedan
YearTrim / engine0–60¼ mileHPDrivetrain
2004ES Sedan 2.4L I-49.20 sec17.00 sec140 hpFWD
2009Sport Edition Sedan 2.4L I-49.00 sec16.80 sec160 hpFWD

Service quick specs OEM factory data

Capacities, torques and tune-up values from the factory service manual.

This engine holds 4.5 qt of 10W-30 / 5W-30 API engine oil, DOT 3 · DOT 4 brake fluid. Torque lug nuts to 65-80 ft-lbs, the oil drain plug to 22.0-29.0 ft-lbs. The firing order is 1-2-3-4-5-6. Note the cylinder-head bolts finish on a torque angle (torque-to-yield) — they stretch permanently and should be replaced, not reused, during any head service.

Lubricants & capacities

Brake FluidDOT 3 · DOT 4
Engine CoolantETHYLENE GLYCOL
Engine Oil10W-30 · API · 5W-30
Engine Oil Capacity4.5 qt
Power Steering FluidGenuine Mitsubishi PS fluid
Power Steering FluidUse Mitsubishi PS fluid

Engine torques

Camshaft Bearing/Carrier Cap Bolts or StudsDOHC: 14 ft-lbs; SOHC:
Crankshaft Pulley and/or Damper Bolts18 ft-lbs
Engine Flywheel Bolts98 ft-lbs
Intake Manifold to Engine Bolts14 ft-lbs
Exhaust Manifold to Cylinder Head BoltsM8 fastners: 36 ft-lbs
Main Bearings57 ft-lbs
Engine Oil Pan Drain Plug22.0-29.0 ft-lbs

Chassis torques

Lug Nuts65-80 ft-lbs
Front Wheel Hub167 ft-lbs

Ignition

Cylinder Firing Order1-3-4-2
Cylinder Firing Order1-2-3-4-5-6
Curb Idle Speed (No Load)700 rpm
Curb Idle Speed Variance (No Load)100 rpm
Ignition Coil Secondary Resistance8500-11,500 ohms
Spark Plug Gap0.028-0.035 in
Spark Plug Torque13.0 ft-lbs
Ignition Timing5, Not adjustable degrees

Battery & A/C

RefrigerantR134a
Refrigerant Capacity1.39-1.48 lbs
Oil GroupPAG
Oil Type56
Oil Capacity4.70 oz
Standard BCI Group Number86
Standard BCI Cranking Performance525 cca

Service checks

Regulated Fuel System Pressure (Without Vacuum)47.0-50.0 psi
Regulated Fuel System Pressure (With Vacuum)38.0 psi
Engine Compression185-139 PSI. 14 Maximum variation PSI.
Engine Compression139-185 psi
Engine Oil Pressure4.3 psi @ Idle, 43-100 psi @ 3500 rpm psi
Intake Valve LashHydraulic in
Exhaust Valve LashHydraulic in

Brakes

Torque Caliper to Bracket32 ft-lbs / 74 ft-lbs
Torque to Knuckle44 ft-lbs / 66-80 ft-lbs
Minimum Pad ThicknessFront: 0.080; Rear: 0.080 in
Minimum Shoe Thickness0.039 in
Rotor Max Parallel Variation0.0006 in
Rotor Runout Limit0.0039 in / 0.0016 in
Rotor Nominal Thickness From1.024 in / 0.394 in
Rotor Nominal Thickness To1.024 in / 0.394 in

Multi-step torque procedures OEM · verified

Connecting Rod (Large End) Bearings — tightening sequence 1 stages
115 ft. lbs., Step 2: 90-9415 ft. lbs
Cylinder Head — tightening sequence 5 stages
158 ft. lbs.58 ft. lbs
2Loosen all bolts completely.
315 ft. lbs.15 ft. lbs
490 degrees.90 degrees
590 degrees.90 degrees

Factory maintenance schedule OEM · verified

Normal service, condensed from the factory interval matrix.

Under the factory schedule, replace the engine oil and filter every 7,500 mi; spark plugs every 60,000 mi; coolant every 30,000 mi. The big-interval services (every 30,000 mi for coolant, and the transmission fluid) are the ones owners most often skip — on a lower-mileage example, assume the original fluids are still in it and check them first.

Every 7,500 miBrake Hydraulic System (inspect fluid level) · Cabin Air Filter (replace) · Engine Oil (drain & refill) · Power Steering System (inspect) · Tire & Wheel Assembly (rotate)
Every 15,000 miAxle Shaft Oil Seal (inspect) · Brake Line (inspect) · Brake Linings (inspect) · CV Joint Boot (inspect) · Engine Oil Filter (replace)
Every 30,000 miAccessory Drive Belt (inspect) · Brake Drum Assembly (inspect) · Engine Air Filter Element (replace) · Engine Coolant System (drain, flush & refill) · Exhaust System (Complete) (inspect) · Fuel Line (inspect)
At 60,000 miEngine Coolant System (drain, flush & refill)
Every 60,000 miDistributor Cap (inspect) · Distributor Rotor (inspect) · Fuel Evaporative Emission Control System (inspect) · Fuel Tank (inspect) · Fuel Tank Filler Cap (inspect) · Spark Plug Wires (replace)

Reliability & federal safety record

Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.

The 2003 model year arrives near the end of a high-activity cycle that peaked around 1999–2001, when complaints, recalls, and TSB counts reached generational highs; by 2003, complaints had fallen to 139, recalls held steady at three, and TSBs dropped sharply to 71 from 104 the prior year. Relative to 2002, 2003 posts marginally fewer complaints and significantly fewer TSBs while matching the same recall and investigation counts, yet it sits well above the 2004 trough of 61 complaints and one recall. Federal data shows 2003 carries notable concentrations in Visibility and Structure complaints, alongside 17 crash-related and 4 fire-related complaints, though the records do not specify root causes. Within the generational arc, 2003 represents a transitional year where overall regulatory activity is retreating from its millennial peak but has not reached the low-frequency stability seen from 2004 onward. Given that its complaint volume and recall exposure remain moderate and are trending downward from the worst years of this generation, yet are still elevated compared with the quieter 2004–2007 period, a 2003 Galant is a conditionally acceptable purchase if price and maintenance history are favorable, though a 2004 or later example offers a cleaner federal record.

3
Open recalls
NHTSA campaigns
71
Service bulletins
Manufacturer communications
2
ODI investigations
Office of Defects Investigation
139
Owner complaints
17 involved a crash · 4 a fire

Owner complaints filed with NHTSA, by component

All 139 complaints on record, top 8 components.

Visibility38
Structure20
Service Brakes, Hydraulic8
Air Bags7
Engine & Engine Cooling6
Power Train6
Unknown Or Other5
Electrical System,Visibility4

Source: NHTSA Office of Defects Investigation complaint database.

Recalls NHTSA · verified

Showing 2 of 3 campaigns on record for this vehicle.

03V442000Fuel System, Gasoline:Delivery:Fuel PumpReported 04/11/2003

ON CERTAIN PASSENGER VEHICLES, THE FUEL RETURN LINE HOSE FITTING ON THE ELECTRIC FUEL PUMP MAY BE RESTRICTED, CAUSING EXCESSIVE FUEL PRESSURE TO BUILD UP IN THE FUEL INJECTION SYSTEM. EXCESSIVE FUEL PRESSURE MAY RESULT… Remedy: DEALERS WILL INSPECT THE FUEL PUMP PRESSURE. THOSE VEHICLES EXHIBITING HIGHER THAN NORMAL FUEL PUMP PRESSURE WILL RECEIVE FUEL PUMP MODIFICATIONS. THE RECALL BEGAN DECEMBER 3…

04V428000Equipment:Other:LabelsReported 01/09/2004

CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, 'OCCUPANT CRASH PROTECTION.' THE BILINGUAL ENGLISH/SPANISH REMOVABLE AIR BAG WARNING LABELS AFFIXED TO THE… Remedy: MITSUBISHI CARIBBEAN WILL MAIL A CUSTOMER NOTIFICATION LETTER CONTAINING A WRITTEN DESCRIPTION AND A GRAPHIC OF THE BI-LINGUAL DASHBOARD AIR BAG WARNING LABEL. IN ADDITION, ALL…

Technical service bulletins NHTSA · verified

Showing 5 of 71 bulletins on record with NHTSA.

BulletinDateComponentSummary
DEALER LETTER2023-07-21EquipmentThis is a Dealer Letter sent to dealers informing that Mitsubishi Technical Training has…
TSB-23-00-0042023-04-24StructureThis Technical Service Bulletin provides instructions and material safety data sheets for…
TSB-23-00-0012023-04-24EquipmentThis Technical Service Bulletin reviews the regulations that require a label showing the…
DEALER LETTER2023-04-21EquipmentThis is a Dealer Letter sent to dealers informing that Mitsubishi Technical Training has…
TSB-22-54-0032022-04-07Exterior LightingThis Technical Service Bulletin was sent to dealers to explain the difference between…

Common OBD-II trouble codes

The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.

P0420
Catalyst system efficiency below threshold — Bank 1
P0300
Random / multiple cylinder misfire detected
P0171
System too lean — Bank 1
P0455
Evaporative emission system leak detected — large leak
P0128
Coolant thermostat below regulating temperature
P0442
Evaporative emission system leak detected — small leak

VIN tools

Decode factory build data for a specific vehicle by VIN.

VIN
Decode a VIN to confirm the transmission and build data for a specific Galant. OEM
Build data
Plant, GVWR class, engine and body data for any 17-character VIN.
Recalls
Check open recall campaigns against a specific vehicle by VIN.

Vehicles with shared specs

Find every vehicle that shares this one's battery, bulbs, oil capacity, platform or parts.

Reference guides

Cross-vehicle references for the kinds of data on this page.

Frequently asked

How much oil does the 2003 Galant 2.4L take?

4.5 qt of ABOVE 0 degreesF 10W-30 SL API, BELOW 100 degreesF 5W-30 SL API, per the factory manual.

Does the 2003 Galant have open recalls?

NHTSA lists 3 recall campaign(s) for this model year. Check your specific vehicle by VIN.

What gas mileage does the 2.4L get?

EPA figures are 19 city / 25 highway / 21 combined mpg.