Description

Cummins B3.3 Engine Overhaul Rebuild Kit Complete In-Frame Solution for Komatsu & Cummins Applications Notes: 8 Valve Engine If your Cummins B3.3 diesel engine is losing compression, burning oil, or showing signs of wear, this complete overhaul rebuild kit provides all the precision-engineered components you need to restore OEM performance and reliability. Designed for both naturally aspirated and turbocharged B3.3 engines across multiple Tier 1 and Tier 2 emission standards, this kit fits a wide range of Komatsu equipment and stationary applications.   4B3.3 Overhaul Rebuild Kit Content This premium rebuild kit includes all major wear components required for a full in-frame overhaul: 4 x Cylinder Liners – Semi-finished liners for precise final fitting 1 x Overhaul Gasket Kit – All critical seals and gaskets for complete disassembly/reassembly 4 x Pistons (Standard) – High-quality OEM-equivalent 4 x Piston Pins & Snap Rings – Secure piston-to-rod connections 1 x Rod Bushings Set – Restores connecting rod clearance 4 x Piston Rings (Standard) – Ensures optimal compression and oil control 1 x Main Bearings Set – Supports crankshaft and maintains oil film integrity 1 x Connecting Rod Bearing Set – Reduces friction and wear at rod journals 1 x Thrust Washers Set – Maintains crankshaft end-play tolerance 1 x Intake & Exhaust Valve Set – Restores airflow efficiency 1 x Valve Guides set – Maintains valve alignment and reduces oil leakage 1 x Intake & Exhaust Valve Seat Set – Restores sealing surfaces for combustion chamber integrity   Engine & Equipment Compatibility Cummins B3.3 Naturally Aspirated – Tier 1 (Piston 2200) Komatsu Engines: S4D95LE-2, 4D95LE-2A, 4D95LE-2B, 4D95LE-2C, 4D95LE-2D Komatsu Excavator: PC60-7, PC60-7-B, PC70-7, PC70-7-B, PC78US-5, PC75UU-3, PC78US-6, PC78UU-6 Komatsu Drilling Rig: BA100-1 Komatsu Mobile Crusher: BR100JG-2 Genset: EGS45-5   Cummins B3.3 Naturally Aspirated – Tier 2 (Piston 2170, Center 48mm) Komatsu Engines 4D95LE-3 Komatsu Wheel Loaders WA65-5, WA70-5, WA80-5   Cummins B3.3 Turbocharged – Tier 2 (Piston 2300) Komatsu Engines: S4D95LE-3 Komatsu – Wheel Loaders: WA80-3, WA80-3-SW, WA80-3-CN, WA80-3-CB, WA80-3-CO, WA90-5, WA100M-3, WA100M-5 Komatsu – Excavator: PC78MR-6, PC78US-6, PC78UU-6, PC88MR-6, PW98MR-6   Why Choose Our Cummins B3.3 Overhaul Kit? OEM-Match Precision: All components are manufactured to meet or exceed OEM specifications. Tier Compliance: Supports both Tier 1 and Tier 2 Cummins B3.3 configurations. Application Coverage: Covers a wide range of Komatsu construction, mining, and material handling equipment. Reduced Downtime: All parts in one kit for streamlined rebuilds. Long-Term Reliability: Durable materials for extended service life under heavy-duty operating conditions.   Frequently Asked Questions (FAQs) How do I know if this Cummins B3.3 overhaul kit will fit my Komatsu equipment? Check your engine model and piston specifications. This kit supports S4D95LE-2/-3 and 4D95LE series engines for Tier 1 & Tier 2, covering most PC, WA, BR, BA, and PW Komatsu equipment listed above. Does this kit include turbocharger components? No, this kit covers internal engine wear parts. Turbocharger components are available separately if required for turbocharged models. Can I use this kit for an in-frame rebuild without removing the engine from the machine? Yes, the kit is designed for in-frame overhauls, though certain machining may be required for semi-finished liners. What’s the typical service life after installing this kit? With proper installation and maintenance, service life can exceed 10,000–15,000 hours depending on operating conditions. Is this rebuild kit OEM or aftermarket? The kit uses OEM-equivalent components, manufactured to meet or exceed Cummins and Komatsu factory specifications.