B3.3 Overhaul Kit for Komatsu Excavators
Premium B3.3 Excavator Engine Overhaul Kit – the professional heavy-duty solution for restoring peak performance, reliability, and durability to your Komatsu B3.3 engine. Specifically engineered to meet the rigorous demands of construction, excavation, mining, and earthmoving applications.
This comprehensive overhaul kit is crafted with high-grade metal and precision components that meet or exceed OEM standards, ensuring seamless compatibility with Komatsu B3.3 engines. Designed to address common engine issues such as compression loss, oil leaks, low power output, and wear.
Key Features & Benefits
- OEM-grade quality components that match genuine Komatsu B3.3 parts
- Restores lost engine power, improves compression, and extends engine service life
- Complete kit includes all critical components for a full B3.3 engine rebuild
- Precision-machined components withstand high temperatures and heavy loads
- Easy to install for professional workshops and on-site maintenance
- Each component undergoes rigorous inspection and testing
Compatibility
Compatible with Komatsu engine models B3.3, B3.3E, S4Q2, and S4Q2E, as well as Komatsu equipment including excavators (PC60-7, PC70-7, PC78US-6, PC80-7, PC110-7), skid steer loaders (SK714, SK716), mini excavators (PC30MR-2, PC40MR-2), and compact track loaders (CT160-1).
Component Specifications
| Component Name |
OEM Part Number |
Quantity |
Material |
Compatibility |
| Overhaul Gasket Set |
3939805, 3939806 |
1 Set (Upper + Lower) |
Heat-Resistant Reinforced Rubber & High-Density Fiber |
B3.3, B3.3E, S4Q2 Series Engines |
| Main Bearing Set (Standard Size) |
3939803 |
1 Set (4 Pcs) |
High-Strength Alloy Steel with Anti-Wear Coating |
B3.3, B3.3E, S4Q2 Series Engines |
| Connecting Rod Bearing Set (Standard Size) |
3939804 |
1 Set (4 Pcs) |
Chrome-Plated Alloy Steel for Heavy-Duty Loads |
B3.3, B3.3E, S4Q2 Series Engines |
| Piston Set (Standard Size) |
3939807 |
4 Pcs |
High-Quality Aluminum Alloy with Heat-Dissipating Coating |
B3.3, B3.3E, S4Q2 Series Engines |
| Thrust Bearing |
3939808 |
1 Set |
Alloy Steel with Self-Lubricating Layer |
B3.3, B3.3E, S4Q2 Series Engines |
| Intake & Exhaust Valves |
3939809 (Intake), 3939810 (Exhaust) |
4 Pcs Each (8 Total) |
Heat-Resistant Steel with Hard Chrome Plating |
B3.3, B3.3E, S4Q2 Series Engines |
| Valve Guides & Seats |
3939811 (Guides), 3939812 (Intake/Exhaust Seats) |
4 Sets Each |
Cast Iron & Bronze Alloy for High-Temperature Resistance |
B3.3, B3.3E, S4Q2 Series Engines |
| Connecting Rod Bushing |
3939813 |
4 Pcs |
High-Strength Alloy Steel with Precision Machining |
B3.3, B3.3E, S4Q2 Series Engines |
Important Note: The semi-finished cylinder liners require professional machining before installation to ensure precise fit and optimal engine performance. We recommend verifying your engine serial number (especially for B3.3E engines with serial number 50001-up) and equipment model before purchase. Professional installation by trained technicians is recommended.
Why Choose Our B3.3 Overhaul Kit?
We prioritize quality and compatibility, with each component undergoing rigorous inspection and testing to meet OEM standards. Our kit offers a cost-effective alternative to genuine Komatsu parts without compromising on quality, helping you reduce maintenance costs while extending the service life of your heavy-duty equipment.
Keywords: B3.3 overhaul kit, B3.3 engine rebuild kit, Komatsu B3.3 parts, OEM 3939803, 3939804, B3.3 engine parts, Komatsu B3.3E parts, S4Q2 overhaul kit, Komatsu heavy duty engine parts
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