rankshaft Oil Seal 3803994 3095278 for Cummins Engine QSK38 QSK50
Description
Technical Parameters
| Part No: | 3803994 |
| Part Name: | KIT,FRONT CRANKSHAFT SEAL |
| Size: | 4cm*15cm*15cm |
| Weight: | 0.295KG |
| Brand: | Cummins |
Overview
The QSK38/QSK50 Cummins Engine Crankshaft Oil Seal is a critical component engineered to prevent oil leakage and protect engine integrity in demanding environments. Specifically designed for Cummins' QSK38 and QSK50 series engines, this oil seal ensures optimal lubrication system performance by maintaining crankshaft chamber pressure and blocking contaminants. Its precision design meets OEM specifications, guaranteeing seamless compatibility and reliability. Ideal for heavy-duty applications, this seal reduces downtime and maintenance costs by extending engine life through superior leak prevention.
Material Composition
Constructed from high-performance nitrile rubber (NBR) or fluorocarbon (FKM) elastomers, this oil seal offers exceptional resistance to heat, abrasion, and oil degradation. The sealing lip is reinforced with a corrosion-resistant stainless steel garter spring, ensuring consistent tension and contact with the crankshaft. The outer casing, made from powdered metal or rubber-coated steel, provides a secure fit within the engine housing. These materials are selected for their compatibility with synthetic and mineral oils, as well as their ability to withstand temperatures ranging from -40°F to 300°F (-40°C to 149°C).
Areas of Application
Heavy-Duty Trucks: Maintains engine efficiency in long-haul transportation.
Industrial Generators: Ensures uninterrupted power supply in manufacturing and construction.
Marine Engines: Resists saltwater corrosion in marine propulsion systems.
Mining Equipment: Withstands abrasive dust and extreme loads in excavators and haul trucks.
Agricultural Machinery: Protects against dirt and moisture in tractors and harvesters.
Key Features
High-Temperature Resilience: Fluorocarbon variants excel in extreme heat, ideal for turbocharged engines.
Contaminant Exclusion: Dual-lipped design blocks external debris and retains internal lubricants.
Dynamic Sealing: Accommodates crankshaft oscillations and minor misalignments without wear.
Long Service Life: Engineered to endure 10,000+ hours under standard operating conditions.
OEM Compliance: Matches original dimensions and performance, ensuring hassle-free replacement.
Cummins Central Warehouse Emergency Supply Case
Relying on the core qualifications of the Cummins Southwest Official Central Warehouse, we maintain a full range of Cummins engines, genuine filters, oil pumps, injectors, crankshafts, sensors, and other key parts in large stock. We have undertaken multiple emergency repair projects for major domestic equipment failures and urgent replenishment orders, achieving 24-hour rapid allocation and expedited delivery. This solves customers' equipment downtime and project delay issues. With genuine products, fast fulfillment, and support from original manufacturer technology, we have become the preferred service provider for emergency Cummins equipment supply in the industry.
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| Part No: | 3803994 |
| Part Name: | KIT,FRONT CRANKSHAFT SEAL |
| Size: | 4cm*15cm*15cm |
| Weight: | 0.295KG |
| Brand: | Cummins |
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