Mitsubishi 4B10 / 4B11 / 4B12 Complete Engine

The 4B1 series includes three naturally aspirated models: 4B10(1.8L)、4B11(2.0L)、4B12(2.4L). All adopt inline four-cylinder, water-cooled four-stroke, DOHC 16-valve structure, ECI-MULTI multi-point electronic fuel injection. Dual MIVEC (intake & exhaust continuous variable valve timing). All-aluminum construction greatly reduces engine weight compared with older 4G series.

4B10 1.8L: Compact power, focus on fuel economy, mainly for small & medium sedans.

4B11 2.0L: Balanced power & fuel consumption, huge market stock; turbo version 4B11T applied on Lancer Evolution X.

4B12 2.4L: Larger stroke, stronger low-speed torque, mainly matched for SUV models.

Standard installation interfaces support direct replacement without large modification. Available options: complete engine, long block bare engine. Every engine undergoes bench test before delivery to guarantee stable performance.

Matching Vehicle List

4B10 1.8LMitsubishi Lancer EX, Galant Fortis, RVR, Delica D:5 (Japan version)

4B11 2.0L NAMitsubishi Lancer EX / Wingroad, Galant Fortis, Proton Inspira4B11T Turbo: Lancer Evolution X, Lancer Ralliart

4B12 2.4LMitsubishi Outlander EX, ASX, Delica D:5, Galant Fortis

Product Advantages

Advanced All-Aluminum Platform

• Lightweight all-aluminum cylinder block and cylinder head, lower overall weight, improve vehicle fuel efficiency.
• Timing chain drive, avoid regular timing belt replacement maintenance cost.
• Dual MIVEC intake & exhaust variable valve timing, optimize power output at full RPM range.

Reliable Daily Operation

• Mature mass-produced engine platform, abundant market verification.
• Smooth power delivery, suitable for urban commuting and highway driving.
• Complete global spare parts supply chain, convenient maintenance.

Diversified Selection for Replacement

• Three displacements optional to match sedan and SUV. Supply complete engine assembly or bare long block according to customer overhaul demands. Standard mounting dimensions, direct replacement for original failed engine.

Technical Specifications