1. Product Introduction
This Mitsubishi L3A full overhaul rebuild kit is a premium OEM-grade replacement solution specially developed for Mitsubishi L3A series 3-cylinder water-cooled diesel engines. It integrates all wearable moving parts and complete sealing accessories required for full engine disassembly and overhaul. This all-in-one repair kit thoroughly solves common engine failures such as power drop, insufficient cylinder compression, excessive oil consumption, black smoke emission, and oil & water leakage, perfectly restoring the original working performance of mini construction machinery and stationary power equipment.
2. Compatible Engine Models & Applications
This overhaul kit is fully compatible with all Mitsubishi L3A engine variants, including standard and low-speed heavy-duty versions:
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L3A Standard naturally aspirated engine
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L3A-61ES / L3A-61SDH industrial power engine
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L3A-SDH heavy-duty marine & generator engine
Typical applicable equipment: mini excavators, small forklifts, compact loaders, marine auxiliary engines, water pump units, and portable diesel generator sets.
3. Official OEM Part Numbers
Full Complete Overhaul Kit Assembly No.: MM432490
Full Gasket Set OEM No.: MM432491 / 30L9811011C
Piston Ring Set OEM No.: MM433713
MLS Cylinder Head Gasket OEM No.: MM432492
4. Engine Core Specification
Engine Type: 3-cylinder, 6-valve, inline water-cooled diesel engine
Cylinder Bore Size: 76mm
Piston Ring Standard Size: 76×1.5/1.5/3.0
Available Repair Oversize: STD / +0.25mm / +0.50mm
5. Full Kit Complete Components
Our full L3A overhaul kit covers every wearable and sealing part for complete engine rebuilding, no additional parts purchase required:
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STD pistons, piston rings, piston pins, connecting rod bushings (3 sets)
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Wet type cylinder liners (3 pcs)
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Complete main bearing set, connecting rod bearing set and crankshaft thrust washers
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Intake valves, exhaust valves, valve guides and valve seat inserts
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High-strength MLS multi-layer metal cylinder head gasket, valve cover gasket, oil pan gasket, intake & exhaust manifold gaskets
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Front & rear crankshaft oil seals, dedicated valve oil seals (6 pcs)
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All auxiliary sealing gaskets and rubber sealing parts
6. Key Features & Product Advantages
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100% OEM dimensional tolerance, perfect direct plug-and-play installation without cutting or modification
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Reinforced MLS metal cylinder head gasket, high temperature and high pressure resistant, effectively preventing gasket blowout, water leakage and air leakage
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Chromed wear-resistant piston rings and bimetallic alloy bearings, maintaining stable cylinder pressure and eliminating oil burning and blue smoke
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Eco-friendly non-asbestos sealing gaskets, anti-aging and oil-resistant, adapting to long-hour continuous operation
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Integrated one-stop package greatly shortens maintenance cycle and avoids parts matching errors
7. Important Compatibility Notes
L3A piston rings are fully interchangeable with L2E piston rings (same 76mm size and specification). However, pistons, cylinder liners, full gaskets, bearings and valve components are NOT interchangeable between L2E and L3A due to different cylinder quantity and engine structure.
Strictly confirm the actual engine model before ordering. Wrong part matching will cause assembly failure, poor compression, oil leakage and permanent engine damage.
8. Warranty Policy
All Mitsubishi L3A engine overhaul kits come with 12-month manufacturer warranty under correct installation and normal working conditions. Warranty does not cover damage caused by improper assembly, overloading operation, lack of lubrication, water shortage or artificial modification.
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