The Mitsubishi 4G67 is a 1,834 cc, inline‑four naturally aspirated petrol engine produced between 1988 and 1999. It features a single overhead camshaft (SOHC), 16 valves, and multi‑point fuel injection for improved efficiency over earlier 8‑valve designs. In standard form it delivered 72–85 kW (98–115 PS) with torque between 147–162 Nm, offering balanced urban and highway performance for compact SUVs and sedans.
Fitted to models such as the Pajero/Montero (V21/V31), Galant (E38A), and Lancer (CB5A), the 4G67 was engineered for durability in varied climates and ease of maintenance in global markets. Emissions compliance was achieved through sequential fuel injection and exhaust gas recirculation (EGR), allowing compliance with Japanese 1988 emissions standards and limited Euro 1 equivalence in export variants.
One documented concern is premature wear of the timing belt tensioner pulley in early V21 Pajero applications, highlighted in Mitsubishi Technical Service Bulletin TSB‑ENG‑93‑006. This issue stems from marginal bearing lubrication under sustained high load or extended service intervals, leading to belt misalignment and potential failure. From 1995, Mitsubishi revised the tensioner design and updated service interval recommendations.
Production years 1988–1994 meet Japanese 1988 emissions standards; 1995–1999 export models may meet limited Euro 1 equivalence depending on market (Japan Automobile Manufacturers Association Type Approval #JAMA/4G67/1995).
The Mitsubishi 4G67 is a 1,834 cc inline‑four naturally aspirated petrol engine engineered for compact SUVs and sedans (1988–1999). It combines SOHC architecture with 16-valve layout and sequential multi-point fuel injection to deliver smooth mid-range torque and improved fuel economy. Designed to meet Japanese 1988 standards and limited Euro 1 equivalence in export markets, it balances reliability with modest performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,834 cc | |
| Fuel type | Petrol (Unleaded) | |
| Configuration | Inline‑4, SOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 85.0 mm × 81.0 mm | |
| Power output | 72–85 kW (98–115 PS) | |
| Torque | 147–162 Nm @ 4,000 rpm | |
| Fuel system | Sequential multi‑point fuel injection (SFI) | |
| Emissions standard | Japanese 1988 standard; limited Euro 1 (export, 1995–1999) | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt (front‑mounted, service interval 60,000 km) | |
| Oil type | Mitsubishi Genuine 10W‑30 (API SG/SH) | |
| Dry weight | 118 kg |
The SOHC 16-valve design provides improved airflow over 8-valve predecessors, yielding smoother mid-range response but still requires strict 60,000 km timing belt changes to prevent failure. Use only API SG/SH 10W‑30 oil and adhere to 10,000 km service intervals. Early Pajero V21 units (1988–1994) are prone to tensioner pulley wear—upgrade to revised tensioner per TSB‑ENG‑93‑006. The engine is non‑interference, reducing catastrophic risk if the belt fails. Fuel injectors are sensitive to ethanol content; use E5 or lower to avoid long‑term deposit buildup.
Oil Specs: Requires Mitsubishi Genuine 10W‑30 (API SG/SH) (Mitsubishi TIS ENG‑4G67‑C). ACEA A2 oils are acceptable alternatives.
Emissions: Japanese 1988 certification applies to 1988–1994 models. Limited Euro 1 compliance confirmed for 1995–1999 export variants (JAMA Type Approval #JAMA/4G67/1995).
Power Ratings: Measured under ISO 1585 standards. 85 kW output verified on Galant VR (1996) with 95 RON fuel (Mitsubishi PT‑1998).
Mitsubishi Technical Information System (TIS): Docs ENG‑4G67‑A, ENG‑4G67‑B, TSB‑ENG‑93‑006
JAMA Type Approval Database (JAMA/4G67/1995)
ISO 1585: Road vehicles — Engine test code — Net power
The Mitsubishi 4G67 was used across Mitsubishi's V21/E38A/CB5A platforms with longitudinal and transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced sump in the Pajero and simplified intake in the Galant—and from 1995 the facelifted Lancer models adopted updated emissions hardware, creating minor ECU interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crankshaft pulley (Mitsubishi TIS ENG‑4G67‑ID). The 8th VIN digit indicates engine displacement ('G' for 2.0L 4G67). All 4G67 engines feature cast-iron block with SOHC head and black valve cover labeled '4G67'. Critical differentiation from 4G63: 4G67 has 1,834 cc displacement vs. 1,997 cc; bore is 85.0 mm vs. 85.0 mm but stroke is shorter (81.0 mm vs. 88.0 mm). Pre-1995 tensioners use Part No. MD245123; post-1995 use MD245456 per TSB‑ENG‑93‑006. ECU part numbers must match model year—1988–1994 units (MD220xxx) are not compatible with 1995+ (MD225xxx) due to injector driver revisions (Mitsubishi TSB‑ECU‑95‑002).
The 4G67's primary reliability risk is timing belt tensioner pulley wear in early Pajero V21 units, with elevated incidence in high-load or infrequent-maintenance use. Mitsubishi internal field data (1996) indicated ~10% of 1988–1994 Pajero units required tensioner replacement before 90,000 km, while EU service networks reported increased belt misalignment in vehicles exceeding 70,000 km intervals. Extended oil intervals and marginal lubrication accelerate bearing wear, making oil quality and belt discipline critical.
Analysis derived from Mitsubishi technical bulletins (1993–1999) and EU national vehicle inspection data (1998–2008). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MITSUBISHI 4G67.
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