Basic Info.
| Part no. | 7N0858 | Material | Iron |
| Type | Cylinder Head | Weight | 97KG |
| Engine No. | 3408A | Transport Package | Wooden Box |
| Trademark | DIRON | Origin | Luoyang City |
| HS Code | 84099991 | Production Capacity | 5000PCS/Year |
Product Details
Item Model：7N0858
Date First Listed：2024/12/04
Manufacturer：Diron Parts
Product Description
Part Number：Cylinder Head 7N0858
Part Type：Cylinder Head
Compatible Equipment：3408A Diesel Engine suitable for CAT Caterpillar
Product Introduction: Cylinder Head 7N0858 for Caterpillar 3408A Diesel Engine
Overview
The Cylinder Head 7N0858 is a precision-engineered component designed for the Caterpillar 3408A diesel engine, critical for sealing the combustion chamber, housing the valves, and facilitating efficient airflow and fuel combustion. This part is essential for maintaining engine performance and reliability in heavy-duty applications, such as wheel tractors, trucks, wheel loaders, and marine propulsion systems. Available as a new aftermarket, remanufactured, or genuine OEM part, it provides a robust solution for engine maintenance.
Key Features
Material: Constructed from high-grade cast iron, designed to withstand extreme temperatures, pressures, and mechanical stresses in the 3408A engine. Features precision-machined surfaces for optimal sealing, heat dissipation, and durability.
Design: Engineered to OEM specifications for precise fitment and performance. Includes valve seats, guides, and ports optimized for efficient combustion and exhaust flow. Available as a bare head (e.g., with guides only, requiring valve seat grinding) or loaded assembly with pre-installed valves, springs, premium valve stem seals, retainers, and injector cups. Features advanced cooling passages to manage engine temperature effectively.
Compatibility: Compatible with Caterpillar 3408A diesel engines, used in:
Wheel Tractors: 631D, 633D, 637D, 639D.
Trucks: 769C.
Wheel Dozers: 834B.
Wheel Loaders: 988B.
Track-Type Tractors: D8L.
Marine Applications: 3408A DITA (Direct Injection Turbocharged Aftercooled) for marine propulsion.
Engines: 3408A (V8, 18.0L, 2-valve per cylinder configuration), with specific serial numbers (e.g., 99U, 48W). Exact compatibility must be verified using the engine’s serial number via CAT SIS, as per Caterpillar’s policy.
Cross-References: 7N0858, 7N0855, 7N0856, 7N0857, 0R0835, 0R0836, and others. The 7N0858 is interchangeable with related parts for 3408, 3408B, and 3408C models, often sharing casting numbers like 7N0855.
Dimensions: Approximate dimensions are 368.3 mm (length), 1270 mm (width), and 228.6 mm (height), based on supplier data for 3408 heads (web:7). Typical bare cylinder heads for 3408A engines weigh approximately 193 lbs (87 kg), with loaded assemblies heavier due to pre-installed components (web:19).
