For Diesel Cylinder Block Kta50 3178803 3648602 Generator Spare Part With 6 Month Warranty For

Product Details

Product Overview

This genuine diesel cylinder block, identified by OEM numbers 3178803 and 3648602, is a critical structural component for KTA50 series engines. Manufactured by Chongqing Engine Company (), this part is designed for high-horsepower applications commonly found in generator sets, marine propulsion systems, and heavy-duty trucks. As the foundation of the engine, this cylinder block ensures precise alignment of pistons, crankshaft, and camshaft, directly impacting engine durability and performance.

Each block is a direct replacement for original equipment, offering a 6-month warranty with options for extended coverage. Suitable for both new builds and overhauls, this component is essential for maintaining the reliability of KTA50 power units in demanding industrial environments.

Key Features & Benefits

• Genuine OEM Quality: Manufactured by (Chongqing Engine Co.), ensuring exact material specifications and dimensional tolerances as per engineering standards.
• Proven Durability: Cast from high-strength gray iron alloy with reinforced main bearing webs to withstand extreme combustion pressures up to 2,500 psi in turbocharged applications.
• Precision Machining: Cylinder bores are plateau-honed with 0.0005-inch tolerance for optimal ring seal and reduced oil consumption.
• Corrosion Protection: Factory-applied rust inhibitor coating protects internal passages during storage and transport.
• Application Versatility: Compatible with KTA50-G (generator), KTA50-M (marine), and KTA50-T (truck) engine configurations.
• Full Traceability: Each block includes casting date codes and serial number for complete supply chain verification.

Technical Specifications

OEM Cross-Reference

Primary Numbers:

• 3178803 (Engine Block Assembly)
• 3648602 (Superseded/Alternative Number)

Compatible OEM Variants:

• KTA50-G1 through G9 generator configurations
• KTA50-M0 through M5 marine ratings
• KTA50-T1 through T8 truck/tractor ratings

Note: Always verify stamping numbers on existing block before ordering. blocks may show “” or “” casting marks.

Compatibility

This cylinder block is commonly used for the following applications:

• Generator Sets: KTA50-G series (50-60 Hz prime/standby power)
• Marine Propulsion: KTA50-M series for workboats, tugs, and offshore vessels
• Heavy-Duty Trucks: KTA50-T series for mining haul trucks and specialty vehicles
• Industrial: Pump drives, compressor packages, and drilling rigs

Fitment is inferred based on OEM specifications. Verify engine serial number and block configuration before purchase.

Global Supply & Distribution

We maintain strategic inventory in Chongqing, China, with satellite warehouses in Dubai (UAE), Rotterdam (Netherlands), and Houston (USA). Our logistics network supports:

• Express Air Freight: 3-5 business days to major international airports
• Sea Freight (FCL/LCL): 15-25 days to all major ports worldwide
• Door-to-Door: Available for urgent orders via DHL/FedEx/UPS

Key Markets Served: North America (mining, power generation), Europe (marine, industrial), Asia-Pacific (construction, shipping), Middle East (oil & gas), Africa (mining, infrastructure). We comply with all export regulations including dual-use controls for diesel engine components.

Quality Assurance

• Manufacturing Standard: ISO 9001:2015 certified production facility
• Material Certification: Casting analysis report with tensile strength and hardness values
• Dimensional Inspection: 100% CMM (Coordinate Measuring Machine) verification of all critical surfaces
• Pressure Testing: 3-bar coolant passage test for leak-free operation
• Video Inspection: Pre-shipment video report available upon request
• Warranty: 6 months standard, with optional 12-month extension for registered customers

FAQ

Q1: Can this block be used to replace a KTA50 block from a different OEM (e.g., vs.)?

A: Yes, this CCEC-manufactured block is an exact OEM replacement for KTA50 engines. is a joint venture between and Chinese partners, producing blocks to the same blueprints and tolerances. However, always check the casting number on your existing block and compare with the “3178803” or “3648602” stamping. Variations exist between early and late production runs regarding oil gallery configurations.

Q2: What maintenance procedures are recommended before installing a new cylinder block?

A: Before installation: (1) Remove all shipping plugs and clean oil galleries with compressed air. (2) Apply assembly lube to all bearing surfaces and cylinder bores. (3) Verify main bearing bore alignment using a bore gauge (spec: 152.400-152.425 mm). (4) Check deck surface flatness (max 0.05 mm over 300 mm). (5) Use new head gaskets and torque bolts to specifications (typically 270-300 Nm for main caps).

Q3: What is the typical service life of this cylinder block under generator prime power operation?

A: With proper maintenance (oil changes every 250 hours, coolant analysis every 500 hours), KTA50 blocks typically achieve 12,000-15,000 operating hours before requiring major overhaul. The block itself is reusable through multiple rebuild cycles, provided no cracks or excessive wear (>0.15 mm bore taper) are present. The cast iron construction allows for two standard bore oversizes (0.5 mm and 1.0 mm) during reconditioning.