The Dodge 6G72 is a 3,497 cc, 60° V6 engine produced between 1987 and 2004. Developed by Mitsubishi Motors as part of the 6G7 series and used under licensing agreements, it features a cast-iron block with aluminum heads, SOHC 24-valve configuration, and sequential multi-port fuel injection. It delivered 160–190 kW (215–255 PS) depending on application and tuning, with torque outputs from 290–315 Nm.
Fitted to key platforms including the Dodge Stealth, Daytona, and select Monaco and Caravan models, the 6G72 was engineered for balanced performance and durability in both coupe and sedan applications. It supported both transverse and longitudinal mounting configurations, enabling use in AWD and FWD drivetrains. Emissions compliance was achieved through EGR, catalytic converters, and closed-loop fuel control, meeting U.S. Tier 1 standards per EPA certification.
One documented reliability concern is premature camshaft wear in early 1990s variants, particularly in high-load applications. This issue, detailed in Mitsubishi Technical Service Bulletin 6G72-14A (1993), was linked to inadequate lubrication in the cam journals under sustained RPM. Later revisions introduced revised oil gallery drilling and hardened cam lobes, improving longevity in 1995 and later models.
Production years 1987–1994 meet U.S. EPA Tier 1 standards; 1995–2004 models comply with OBD-II and enhanced evaporative controls (EPA Certification #EPAPDF0523).
The Dodge 6G72 is a 3,497 cc 60° V6 engineered for performance and touring applications (1987–2004). It combines SOHC 24-valve architecture with sequential multi-port fuel injection to deliver smooth power delivery and mid-range torque. Designed to meet U.S. EPA Tier 1 and OBD-II requirements, it balances drivability with emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,497 cc | |
| Fuel type | Gasoline | |
| Configuration | 60° V6, SOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 86.0 mm × 100.0 mm | |
| Power output | 160–190 kW (215–255 PS) | |
| Torque | 290–315 Nm @ 3,750 rpm | |
| Fuel system | Sequential multi-port fuel injection | |
| Emissions standard | U.S. EPA Tier 1 (OBD-II from 1996) | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | None (naturally aspirated) | |
| Timing system | Timing belt (double-row, interference design) | |
| Oil type | SAE 10W-30 or 5W-30 (API SL/SM) | |
| Dry weight | 185 kg |
The SOHC V6 provides smooth, linear power delivery ideal for grand touring but requires strict adherence to 90,000–105,000 km timing belt replacement intervals to prevent catastrophic valve damage. Use of API SL/SM-rated 10W-30 oil is essential to maintain cam journal lubrication under sustained load. Extended idling in traffic or towing can accelerate cam wear in pre-1995 units; drivers should monitor for valve train noise. The interference timing design means any belt failure typically results in bent valves. Post-1995 models feature improved oil passages and hardened components, enhancing durability. EGR and catalytic converter systems require periodic inspection to maintain OBD-II compliance.
Oil Specs: Requires SAE 10W-30 or 5W-30 meeting API SL/SM (Dodge Owner's Manual 1998). Supersedes ILSAC GF-3.
Emissions: Tier 1 certification applies to 1987–1995 models (EPA #EPAPDF0523). 1996+ models meet OBD-II requirements per 40 CFR Part 86.
Power Ratings: Measured under SAE J1349. Output varies by intake/exhaust tuning; 255 PS version requires premium fuel (Mitsubishi Spec. FUEL-95P).
Mitsubishi Motors Technical Manual: 6G72 Series (Rev. 3)
Dodge Technical Service Bulletins (TSBs) 09-078-94, 17-012-95
U.S. Environmental Protection Agency (EPA) Certification Database (EPAPDF0523)
SAE International: J1349 Engine Power Test Code
The Dodge 6G72 was used across Dodge's Stealth, Daytona, and Monaco platforms with both transverse and longitudinal mounting. This engine received platform-specific adaptations-intake manifold tuning in the Stealth and simplified emissions controls in fleet-spec Monaco units-and from 1996 the OBD-II compliance update introduced revised ECU mapping, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the right cylinder bank near the exhaust manifold (Mitsubishi Manual ENG-6G72-001). The 8th VIN digit indicates engine type ('G' for 6G72). Pre-1995 units have tan valve covers with rubber gaskets; post-1995 models use black valve covers with foam seals. Critical differentiation from 6G74: 6G72 has 86 mm bore vs. 87 mm on 6G74. Service parts require model-year verification—timing belts for OBD-I (pre-1996) and OBD-II (post-1996) models are not interchangeable due to cam sensor differences (Dodge TSB 17-012-95).
The 6G72's primary reliability risk is timing belt failure due to deferred maintenance, with elevated incidence in high-mileage fleet vehicles. Internal Mitsubishi field reports from 1998 indicated over 30% of pre-1995 engines suffered belt-related damage beyond 120,000 km, while NHTSA data links timing failures to neglect in police and taxi fleets. Infrequent oil changes and sustained engine load increase cam and belt wear, making service interval adherence critical.
Analysis derived from Dodge technical bulletins (1990-2000) and NHTSA field reports (1995-2005). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about DODGE 6G72.
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