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Mitsubishi 4M40 Cylinder Block

Name: Mitsubishi 4M40 Cylinder Block
Brand: Komotashi
SKU: 00249
Rating: 4.8 (1 reviews)

Demo Cylinder Block (4M40 Engine)

✓ Product: Cylinder Block
✓ For Mitsubishi 4M40 Inline 4-Cylinder Diesel Engine
✓ Widely used for pickup trucks, light commercial vehicles, small excavators and generator engine overhaul

Mitsubishi 4M40 cylinder block is the core load-bearing foundation component of 4M40 inline four-cylinder diesel engine. It is integrally cast with high-strength wear-resistant alloy cast iron, equipped with built-in lubricating oil galleries and cooling water channels. The compact integral structure delivers stable structural rigidity, capable of enduring long-term alternating loads, high temperature and pressure. It serves as a critical replacement spare part for overhauling light commercial vehicles and small engineering power equipment.

Overview

Product Details

Product Name: Cylinder BlockApplicable Engine: Mitsubishi 4M40Material: High-strength wear-resistant alloy cast ironMatching Equipment: Pickup Trucks, Light Commercial Vehicles, Small Excavators, Small Generator Sets

Manufactured strictly in accordance with OEM dimensional tolerances for direct bolt-on replacement without modification. Main bearing saddles, cylinder bores and mounting joint surfaces are precisely bored and milled to guarantee assembly concentricity and flatness. Optimized integrated flow channel design ensures stable lubrication circulation and balanced heat dissipation. All finished cylinder blocks pass non-destructive flaw detection and hydraulic pressure leakage testing before delivery. Bare cylinder blocks and pre-assembled blocks fitted with cylinder liners are both available for supply.

Product Advantages

High Rigidity Alloy Cast Iron Structure

Premium high-strength wear-resistant alloy cast iron casting with excellent overall rigidity, outstanding anti-deformation and anti-cracking performance, suitable for daily transportation and light construction heavy-load conditions
One-piece integrated oil and cooling water passages eliminate splicing leakage risks and effectively reduce oil seepage and coolant leakage faults
Compact four-cylinder layout supports long-time continuous stable operation and extends engine overall service life

Precision OEM Standard Machining

Fully processed to original factory drawing tolerance standards, consistent dimensional accuracy for all hole positions and mounting surfaces to achieve seamless assembly matching
High-precision finishing of main bearing housings prevents eccentric wear of crankshaft and prolongs service life of crankshaft and bearing shells
Ultra-fine sealing surface machining thoroughly avoids oil, water and air leakage after installation, lowering one-time overhaul failure rate

Wide Matching & Stable Aftermarket Supply

Exclusively matched with Mitsubishi 4M40 naturally aspirated and turbocharged four-cylinder power units, compatible with multiple pickup and light truck models
Mature aftermarket light-duty engine spare part with sufficient stock and fast delivery
Flexible supply modes: bare cylinder blocks or finished units pre-installed with cylinder liners for bulk order customization

Technical Specifications

Part Name	Applicable Engine	Material	Matching Equipment
Cylinder Block	Mitsubishi 4M40	High-strength wear-resistant alloy cast iron	Pickup Trucks, Light Commercial Vehicles, Small Excavators, Small Generator Sets