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Mitsubishi K3C Full Engine Overhaul Rebuild Kit | OEM Equivalent Replacement Parts
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One-stop full rebuild solution for Mitsubishi K3C 3-cylinder diesel engines, fits mini tractors, compact excavators, forklifts & generator sets. Restore factory power, eliminate oil/water leakage, extend engine service life.
1. Product Overview
Our Mitsubishi K3C overhaul rebuild kit is fully engineered to match OEM dimensional standards for the vertical water-cooled 3-cylinder 6-valve K3C diesel engine, widely equipped on agricultural tractors, mini construction machinery and stationary power units.
Every component inside this kit undergoes strict precision machining and multi-layer quality inspection, built to withstand dusty farm sites, frequent start-stop cycles and long-hour continuous light-to-medium load operation. Whether you are repairing Iseki TU series tractors, Mitsubishi MT1601 tractors, compact loaders or small diesel generators, this all-in-one rebuild kit solves all common engine faults: power loss, excessive oil consumption, black exhaust smoke, cylinder pressure drop and cross-leakage of oil, coolant & air.
Two versions are available for your selection:
- Full Overhaul Rebuild Kit (complete moving parts + full gasket set, for total engine disassembly rebuild)
- Separate Full Gasket Kit (only sealing gaskets & oil seals, for cylinder head repair and leakage troubleshooting)
2. Full Kit Complete Contents (Standard STD Size Rebuild Kit)
This full rebuild pack covers every wearable part you need for full engine restoration, no extra separate purchases required:
Cylinder Kit Assembly
- 3 x STD Pistons (70mm bore, OEM spec MM432981)
- 3 x Sets Piston Rings
- 3 x Wet Cylinder Liners
- 3 x Piston Pins + Circlips
- 3 x Connecting Rod Bushings
Bearing & Crankshaft Parts
- Complete Main Bearing Set (STD)
- Complete Connecting Rod Bearing Set (STD)
- Crankshaft Thrust Washer Set
Valve Train Components
- 3 x Intake Valves + 3 x Exhaust Valves
- 6 x Valve Guides
- 3 x Intake Valve Seat Inserts + 3 x Exhaust Valve Seat Inserts
Full Gasket & Seal Kit (OE Part No. MM434003 / 30A9700098)
- MLS Multi-layer Metal Cylinder Head Gasket (MM408447)
- Valve Cover Gasket, Oil Pan Gasket
- Intake & Exhaust Manifold Gaskets
- Front & Rear Crankshaft Oil Seals
- 6 x Valve Oil Seals (3-cylinder 6-valve dedicated)
- Timing Gear Housing & Oil Cooler Auxiliary Gaskets
3. Compatible Equipment & Engine Models
Matching Engine Variant
Mitsubishi K3C 3-cylinder inline diesel engine (0.9L displacement, 18.5HP)
Agricultural Tractors
- Mitsubishi: MT1601
- Iseki: TU150, TU155, TU157, TU1600, TU1601
- Case / Cub Cadet: 234, 235, 7232, 7233, 7234, 7235
Compact Construction Machinery
Mini excavators, small wheel loaders, rough-terrain forklifts
Stationary Power Units
Portable diesel generator sets, irrigation pump engines
4. Core Product Advantages (Key Selling Points)
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100% OEM Exact Fitment
All parts manufactured to original factory tolerance standards, direct drop-in replacement without modification. Matches OE part numbers MM434003, MM408447, MM432981 for seamless installation.
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Heavy-Duty Reinforced Sealing Performance
MLS multi-layer metal cylinder head gasket with high-temperature resistant red silicone coating, paired with nitrile rubber oil seals. Effectively block coolant, engine oil and air leakage under high temperature & pressure, resisting blowout after long running hours.
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High Wear Resistance & Anti-Fatigue Materials
Pistons adopt high-strength aluminum alloy with reinforced combustion chamber; piston rings feature chromium-plated wear-resistant surface. Bearings are lined with bimetallic anti-friction alloy to reduce wear and metal fatigue during frequent load changes.
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Full Power & Fuel Efficiency Restoration
Perfectly recovers original factory cylinder compression ratio, eliminates blow-by gas, cuts excessive oil burning and black exhaust smoke. Improves fuel combustion efficiency, restores full rated horsepower and torque for farm & construction work.
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All-In-One Cost-Saving Pack
Complete set combines all sealing gaskets, moving wear parts and valve components. Avoid the hassle of sourcing scattered individual parts, slash repair downtime and overall maintenance costs for mechanics & equipment owners.
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Wide Working Condition Adaptability
Designed for harsh environments: dusty farmland, high-temperature summer operation, cold-start winter conditions, and continuous low-speed heavy-load farming tasks. Stable performance with extended service life after overhaul.
5. Installation & Running-In Guidelines
- Pre-Installation Inspection & Cleaning
Fully strip and clean engine block, cylinder head, oil galleries and cooling passages to remove carbon deposits, old gasket residue and metal debris. Check flatness of cylinder block surface before fitting new gaskets.
- Gasket & Seal Mounting Rules
Install all gaskets and oil seals on dry, clean mating surfaces; do not over-apply liquid sealant. Use dedicated seal installation tools to avoid oil seal deformation and early leakage.
- Torque Standard Compliance
Follow OEM torque sequence for cylinder head bolts, main bearing caps and connecting rod bolts to prevent uneven compression and gasket damage.
- Post-Overhaul Break-In Operation
Run engine at idle speed for 20 minutes initial break-in; avoid full-load operation within the first 5 working hours. Replace engine oil and filter after 50 running hours to flush fine metal particles. Regularly inspect all joints for oil or coolant leakage within the first 100 working hours.
6. Frequently Asked Questions
Q1: Is this K3C kit interchangeable with K3B engine parts?
A: The full gasket set of K3B and K3C are partially similar, but core moving parts (pistons, cylinder liners, bearings) have different stroke and dimensional specs and cannot be cross-installed. Please confirm your exact engine model before ordering.
Q2: Do you offer oversized pistons and bearings (+0.25 / +0.50)?
A: Yes, we supply STD, +0.25mm and +0.50mm oversize piston & bearing sets for K3C engines, available for custom order upon request.
Q3: What is the warranty policy?
A: All our K3C overhaul kits carry a 12-month manufacturer warranty under normal working conditions, excluding damage caused by improper installation, overloading or lack of maintenance.
Q4: Can I purchase only the gasket set instead of the full rebuild kit?
A: Separate K3C full gasket kits (OE MM434003) are stocked separately for cylinder head repair and minor leakage fixes.
7. Why Choose Our Engine Overhaul Kits?
- Factory direct supply, competitive wholesale pricing for repair shops, machinery dealers and global exporters
- Massive in-stock inventory, fast global shipping to North America, Europe, Southeast Asia, Australia & Africa
- Professional after-sales technical support to confirm part compatibility and resolve installation questions
- Strict production quality control, all parts pass dimensional and pressure testing before packaging
- Custom packaging & private label service available for bulk wholesale orders
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