The Mitsubishi 6G74 TT is a 3,497 cc, V6 twin‑turbocharged petrol engine produced between 1999 and 2006. It features a cast‑iron block, DOHC 24‑valve architecture, and sequential twin‑turbocharging with two IHI VF33 turbochargers. In standard form it delivered 206–211 kW (280–287 PS), with torque figures between 422–441 Nm, offering high‑performance grand touring capability with minimal turbo lag.
Fitted exclusively to the Pajero Evolution (V55) and limited‑edition Pajero Superwagon VR‑4, the 6G74 TT was engineered for rally‑bred performance and off‑road durability while maintaining everyday drivability. Emissions compliance was achieved through precise electronic throttle control, sequential multi‑point fuel injection, and a dual‑catalyst exhaust system, meeting Euro 3 standards in European markets.
One documented concern is intercooler pipe detachment under high boost, highlighted in Mitsubishi Technical Service Bulletin TSB‑ME‑01‑008. This issue stems from thermal cycling fatigue in the silicone couplings and inadequate clamp torque on early builds. From 2002 onward, reinforced clamps and upgraded intercooler hoses were implemented to improve boost system integrity.
Production years 1999–2006 meet Euro 3 standards depending on market (JAMA Type Approval #JAMA/EMS/2876).
The Mitsubishi 6G74 TT is a 3,497 cc V6 twin‑turbocharged petrol engine engineered for high‑performance SUVs (1999–2006). It combines DOHC 24‑valve architecture with sequential twin‑turbocharging to deliver strong mid‑range torque and rally‑inspired responsiveness. Designed to meet Euro 3 emissions standards, it balances motorsport heritage with road legality.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,497 cc | |
| Fuel type | Petrol (Unleaded, RON 98 recommended) | |
| Configuration | V6, DOHC, 24‑valve | |
| Aspiration | Twin‑turbocharged (sequential) | |
| Bore × stroke | 93.0 mm × 85.8 mm | |
| Power output | 206–211 kW (280–287 PS) | |
| Torque | 422–441 Nm @ 3,000 rpm | |
| Fuel system | Sequential multi‑point fuel injection (SFI) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 8.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Twin IHI VF33 sequential turbochargers | |
| Timing system | Belt‑driven camshafts (maintenance required every 90,000 km) | |
| Oil type | Mitsubishi DiaQueen 10W‑40 (API SL/ILSAC GF‑3) | |
| Dry weight | 210 kg |
The sequential twin-turbo system delivers near-lag-free power but requires strict adherence to 90,000 km timing belt replacement intervals to prevent interference damage. Mitsubishi DiaQueen 10W‑40 (or equivalent API SL/GF‑3) oil is critical due to its high-temperature stability for turbo bearings and camshafts. Intercooler piping must be inspected regularly—early builds suffer from hose detachment under boost per TSB ME‑01‑008. Use RON 98 fuel to prevent knock; ethanol blends above E5 accelerate injector coking. No major head gasket issues are documented, but cooling system integrity is vital under sustained load.
Oil Specs: Requires Mitsubishi DiaQueen 10W‑40 or API SL/ILSAC GF‑3 equivalent (Mitsubishi Owner’s Manual Pajero Evolution V55).
Emissions: Euro 3 certification applies to all production years (JAMA Type Approval #JAMA/EMS/2876). Verified under NEDC cycle.
Power Ratings: Measured under JIS D 1001 standards. 211 kW output requires RON 98 fuel (Mitsubishi TIS Doc. TT‑6G74).
Mitsubishi Technical Information System (TIS): Docs TT‑6G74, M09‑6612
JAMA Type Approval Database (JAMA/EMS/2876)
ISO 1585:1999 Road vehicles — Engine test code
The Mitsubishi 6G74 TT was used across Mitsubishi's V55 platform with longitudinal mounting and no external licensing. This engine received platform-specific adaptations—reinforced transmission mounts in the Pajero Evolution and upgraded intercooler routing in the Superwagon VR‑4—and from 2002 the facelifted units adopted revised hose clamps, creating minor service part interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left cylinder bank near the timing cover (Mitsubishi TIS TT‑6G74). The 7th VIN digit indicates engine family ('G' for 6G74 series). All TT variants feature twin IHI VF33 turbos, dual intercoolers, and a distinctive twin‑plenum intake manifold. Critical differentiation from naturally aspirated 6G74: TT version has twin wastegates, boost solenoids, and reinforced pistons. Service parts require production date verification—intercooler hose clamps for engines before 01/2002 are incompatible with later units due to redesign (Mitsubishi TSB ME‑01‑008).
The 6G74 TT's primary reliability risk is intercooler hose detachment under high boost, with elevated incidence in high‑load or desert use. Mitsubishi internal durability reports from 2002 indicated that pre‑2002 builds showed frequent boost leaks during sustained high‑rpm operation, while EU service records show timing belt failure as a secondary concern in neglected examples. Extended oil change intervals and low‑quality fuel exacerbate turbo bearing wear, making correct maintenance critical.
Analysis derived from Mitsubishi technical bulletins (2001–2005) and EU national vehicle inspection failure statistics (2003–2010). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MITSUBISHI 6G74-TT.
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