YM729904-01560 Cylinder Block Assy for Komatsu 4D92E Engines

Overview

The YM729904-01560 BLOCK ASS’Y,CYLINDER is a replacement cylinder block assembly built for Komatsu 4D92E diesel engines used in forklift and material handling applications. As the structural core of the engine, the cylinder block houses the cylinder bores, supports the crankshaft and related internals, and routes the oil and coolant passages that keep the engine running at correct temperatures. When a block becomes cracked, warped, or worn beyond rebuild limits, replacing it with the YM729904-01560 is the most reliable way to restore engine integrity, compression, and performance.

Compatibility

This cylinder block assembly is designed for the Komatsu 4D92E engine family and is confirmed to fit the following engine configurations:

• 4D92E-1B45-BM
• 4D92E-1B46-BM
• 4D92E-1BD-F

These compact Komatsu diesel engines are commonly found in forklifts and other industrial equipment. Before ordering, verify the engine model on your equipment nameplate or engine data plate to confirm the YM729904-01560 for 4D92E-1B45-BM or your specific variant is the correct match. If you are unsure, our parts specialists can help confirm fitment using your engine or forklift serial number.

Quality and Reliability

Komatsu engines have a strong reputation for durability in demanding material handling environments, and the YM729904-01560 BLOCK ASS’Y,CYLINDER is produced to follow Komatsu’s original design specifications for dimensions, material grade, and machining tolerances. Accurate bore geometry, correct deck surfaces, and properly positioned oil and water galleries are essential for compression, cooling, and lubrication. Choosing a cylinder block that matches these specifications helps ensure dependable, long-term operation of your 4D92E engine.

Installation and Maintenance Tips

• Have the block installed by a qualified diesel technician equipped for full engine disassembly and reassembly.
• Replace associated gaskets and seals, including the head gasket, during installation.
• Torque cylinder head bolts to Komatsu specifications, following the prescribed sequence.
• Inspect pistons, liners, bearings, and the crankshaft for wear before reassembly.
• Use the recommended grade of engine oil and coolant, and maintain correct fill levels.
• After installation, monitor oil pressure, coolant temperature, and overall performance during the initial run-in period.

Why Order from Us

forkliftpartssearch.com specializes exclusively in forklift and material handling parts, so you receive accurate fitment information, knowledgeable support, and a straightforward ordering experience. When you order the YM729904-01560 BLOCK ASS’Y,CYLINDER from us, our team verifies the part against your engine model before processing, reducing the risk of costly mismatches. Need help confirming compatibility with your 4D92E-1B45-BM, 4D92E-1B46-BM, or 4D92E-1BD-F engine? Contact our parts specialists with your model and serial number and we will help you get the right Komatsu replacement part ordered quickly.