The Yanmar 4TNV98 bare engine is the core skeleton of an inline four-cylinder, four-stroke, water-cooled diesel engine with a displacement of approximately 3.318 L and a maximum power of 55–75 kW. It retains core components such as the cylinder block, cylinder head, crankshaft, connecting rods, pistons, camshaft, and fuel injection system, but does not include accessories such as the radiator, fan, exhaust pipe, and starting system.
 Applications
    - Construction machinery            - Small to medium-sized excavators
- Loaders
- Light and medium-sized construction equipment such as bulldozers
 
- Agricultural machinery            - Tractors
- Harvesters
- Water pump sets
 
- Generator sets            - Small to medium-sized diesel generators
- Mobile or stationary backup power supplies
 
- Customized machinery            - Specialized construction and agricultural equipment (such as concrete mixers and drilling rigs)
- Turbocharging, cooling systems, and electronic control systems can be added to the complete machine as needed
 
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  Frequently Asked Questions
  What are your main products?
 We specialize in comprehensive engine spare parts including complete cylinder blocks, cylinder heads, crankshafts, full engine assemblies, pistons, liners, rings, camshafts, connecting rods, oil and water pumps, valve train components, and virtually all engine system parts.
    What if I only know the equipment model but not the part numbers?
 Simply provide us with photographs of your existing components, equipment nameplates, or dimensional specifications, and our technical team will accurately identify the correct replacement parts.
    Do you accept sample orders?
 Yes, we accommodate sample requests for items currently in stock. Customers are responsible for sample costs and associated shipping expenses.
    Do you test all goods before delivery?
 Absolutely. Every component undergoes rigorous quality testing prior to shipment to ensure complete operational reliability.
    What if there's an issue with received items?
 While all products are thoroughly tested, should any concerns arise, our dedicated after-sales support team will provide immediate assistance to resolve any matters.