2003 MITSUBISHI Diamante 6G74/6G72 (F31A)

F31A / Sedan / Wagon / Japan, North America, Australia, selected Asian markets

6G746G724G64Fiche exacte année/versionGold

Engine identity

Engine code

6G74, 6G72, 4G64

Engine summary

Available engines for 2003 included a 3.5L SOHC V6 (6G74), 3.0L SOHC V6 (6G72) mainly in Japan, and a 2.4L SOHC inline-4 (4G64) in some Asian markets.

Displacement

2351-3496 cc depending on engine

Power

170-240 hp depending on engine and market

Torque

208-305 Nm depending on engine and market

Fuel system

Electronic fuel injection

Timing drive

Timing belt for 6G72 and 6G74; variable timing on some engines

Port OBD

Verify by VIN and market

Oils and fluids

Type d’huile

SAE 5W-30 API SM or higher

Capacité d’huile

Approximately 4.1 liters (service-fill and filter change) for 6G74 V6

Liquide de refroidissement

Approximately 8 liters (varies by engine variant)

Fluide

Mitsubishi MZ320 or equivalent automatic transmission fluid

Differential fluid

Hypoid gear oil SAE 90 GL-5 (where applicable, varies by drivetrain)

Liquide de frein

DOT 3 or DOT 4

Service and parts data

Manual transmission

5-speed manual available in some markets and engine versions

Automatic transmission

4-speed or 5-speed automatic depending on engine and market

Spark plugs

NGK BKR6E or equivalent; replace every 30,000 - 50,000 km

Service interval

Every 7,500 miles or 12,000 km; timing belt replacement recommended at 90,000 miles / 145,000 km where applicable

Dimensions des pneus

205/65R15, 215/60R16, 225/55R16

Couple de roue

Verify by VIN and market

Common and chronic problems

Timing belt wear leading to engine damage if not replaced per schedule
Suspension component wear causing ride comfort issues
Electrical issues with power windows and door locks in high-mileage units

First checks

Verify timing belt replacement history
Inspect for suspension and steering play
Check all engine management sensors due to known age-related failures

Avant de remplacer des pièces

Save fault codes and freeze-frame data before clearing anything.
Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.

Important notes

Engine availability and specifications vary by market; North America primarily received the 3.5L V6 6G74.
Wagon body style was mainly marketed in Japan and Australia; US market received sedan only.

Codes courants

P0300 P0420 P0171 P0455

Source and verification notes

Mitsubishi Diamante 2003 official service manuals for multiple markets
Third-party global automotive databases cross-referencing Mitsubishi 2003 model lineups

Outils compatibles

Verify by VIN and market

Questions fréquentes

What engine code does the 2003 MITSUBISHI Diamante 6G74/6G72 (F31A) use? 2003 MITSUBISHI Diamante 6G74/6G72 (F31A) is listed here with engine code 6G74, 6G72, 4G64; engine summary: Available engines for 2003 included a 3.5L SOHC V6 (6G74), 3.0L SOHC V6 (6G72) mainly in Japan, and a 2.4L SOHC inline-4 (4G64) in some Asian markets..
What oil and capacity does the 2003 MITSUBISHI Diamante 6G74/6G72 (F31A) use? 2003 MITSUBISHI Diamante 6G74/6G72 (F31A) is listed with SAE 5W-30 API SM or higher and oil capacity Approximately 4.1 liters (service-fill and filter change) for 6G74 V6. Confirm market and engine option before service.
What are common 2003 MITSUBISHI Diamante 6G74/6G72 (F31A) problems? Highlighted checks for 2003 MITSUBISHI Diamante 6G74/6G72 (F31A): Timing belt wear leading to engine damage if not replaced per schedule, Suspension component wear causing ride comfort issues, Electrical issues with power windows and door locks in high-mileage units.

Engine identity

Engine code

6G74, 6G72, 4G64

Engine summary

Available engines for 2003 included a 3.5L SOHC V6 (6G74), 3.0L SOHC V6 (6G72) mainly in Japan, and a 2.4L SOHC inline-4 (4G64) in some Asian markets.

Displacement

2351-3496 cc depending on engine

Power

170-240 hp depending on engine and market

Torque

208-305 Nm depending on engine and market

Fuel system

Electronic fuel injection

Timing drive

Timing belt for 6G72 and 6G74; variable timing on some engines

Port OBD

Verify by VIN and market

Oils and fluids

Type d’huile

SAE 5W-30 API SM or higher

Capacité d’huile

Approximately 4.1 liters (service-fill and filter change) for 6G74 V6

Liquide de refroidissement

Approximately 8 liters (varies by engine variant)

Fluide

Mitsubishi MZ320 or equivalent automatic transmission fluid

Differential fluid

Hypoid gear oil SAE 90 GL-5 (where applicable, varies by drivetrain)

Liquide de frein

DOT 3 or DOT 4

Service and parts data

Manual transmission

5-speed manual available in some markets and engine versions

Automatic transmission

4-speed or 5-speed automatic depending on engine and market

Spark plugs

NGK BKR6E or equivalent; replace every 30,000 - 50,000 km

Service interval

Every 7,500 miles or 12,000 km; timing belt replacement recommended at 90,000 miles / 145,000 km where applicable

Dimensions des pneus

205/65R15, 215/60R16, 225/55R16

Couple de roue

Verify by VIN and market

Questions fréquentes

What engine code does the 2003 MITSUBISHI Diamante 6G74/6G72 (F31A) use? 2003 MITSUBISHI Diamante 6G74/6G72 (F31A) is listed here with engine code 6G74, 6G72, 4G64; engine summary: Available engines for 2003 included a 3.5L SOHC V6 (6G74), 3.0L SOHC V6 (6G72) mainly in Japan, and a 2.4L SOHC inline-4 (4G64) in some Asian markets..

What oil and capacity does the 2003 MITSUBISHI Diamante 6G74/6G72 (F31A) use? 2003 MITSUBISHI Diamante 6G74/6G72 (F31A) is listed with SAE 5W-30 API SM or higher and oil capacity Approximately 4.1 liters (service-fill and filter change) for 6G74 V6. Confirm market and engine option before service.

What are common 2003 MITSUBISHI Diamante 6G74/6G72 (F31A) problems? Highlighted checks for 2003 MITSUBISHI Diamante 6G74/6G72 (F31A): Timing belt wear leading to engine damage if not replaced per schedule, Suspension component wear causing ride comfort issues, Electrical issues with power windows and door locks in high-mileage units.

2003 MITSUBISHI Diamante 6G74/6G72 (F31A)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

First checks

Avant de remplacer des pièces

Important notes

Scanning Engine...

2003 MITSUBISHI Diamante 6G74/6G72 (F31A)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

First checks

Avant de remplacer des pièces

Important notes