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Intake Valve Kit Cummins 3800340 | 3942588, 4981794, 84201835
Ensure optimal engine breathing and combustion efficiency with this premium Cummins 3800340 intake valve kit. Designed for heavy-duty ISC, ISL, and QSC engines, it provides a reliable seal and long-lasting durability.
Description
High-Performance Intake Valve Kit for Cummins Engines
The Cummins 3800340 Intake Valve Kit is a premium-grade replacement designed to restore and maintain optimal cylinder sealing and airflow in heavy-duty diesel engines. Engineered to withstand extreme combustion temperatures and high-pressure environments, this kit ensures your engine operates at peak efficiency.
Kit Contents & Specifications
This comprehensive kit includes the essential components required for a professional valvetrain service:
- Intake Valve: 1 pc (Cross-reference: 3942588)
- Valve Locks (Keepers): 2 pcs
- Head Diameter: 38.3 mm
- Stem Diameter: 8.0 mm
- Total Length: 137.8 mm
- Seat Angle: 30°
Engine Compatibility
This intake valve kit is designed for a wide range of Cummins medium and heavy-duty diesel engines, including:
- Cummins ISC 8.3
- Cummins ISL 8.3 / ISL 8.9
- Cummins QSC 8.3
- Cummins QSL 8.9
Key Benefits
- Durable Construction: Manufactured from high-strength materials to resist wear, thermal fatigue, and corrosion.
- Precise Fitment: Built to exact dimensional standards for seamless installation and reliable sealing.
- Restored Efficiency: Prevents compression loss and improves fuel combustion efficiency.



