Illustrative photo — the delivered item may differ in appearance. Orders are fulfilled by catalog part number (SKU).
Intake Valve Kit Cummins 5259420 | 4089761, 3970727, 4089762, 4981794
High-quality intake valve kit designed for Cummins ISC, ISL, QSC, and QSL engines to ensure optimal combustion and reliable engine performance.
Description
Cummins 5259420 Intake Valve Kit
The Cummins 5259420 intake valve kit is designed to maintain precise airflow and optimal combustion within heavy-duty diesel engines. Engineered to withstand high temperatures and intense pressure, this intake valve kit ensures reliable valvetrain operation and long-term durability. It is primarily used on EPA10 8.3-liter ISC and ISL engines, as well as QSC and QSL series engines.
This part is also available under the numbers: 4089761, 3970727, 4089762, and 4981794. Replacing a worn intake valve is critical to preventing compression loss, reducing emissions, and maintaining peak engine efficiency.
Technical Specifications
- Valve Head Diameter: 38.3 mm
- Stem Diameter: 8 mm
- Length: 137.8 mm
- Seat Angle: 30°
Engine Compatibility
This intake valve kit is compatible with the following Cummins engine models:
- Cummins ISC 8.3
- Cummins ISL 8.9
- Cummins QSC 8.3
- Cummins QSL 8.9
Cross-Reference / Interchange Part Numbers
This part replaces / is interchangeable with the following part numbers:
- 5259420
- 4089761
- 3970727
- 4089762
- 4981794
- 5266243
