Product Descreiption
1. Basic Specifications (Parameters)
- Part Number: 3991085-6CT
- Product Type: Engine intake valve spring
- Material: High-strength alloy spring steel (heat-treated, fatigue-resistant)
- Design Feature: Precision coiled compression spring, high elasticity & wear resistance
- Application Standard: Matches 6CT series diesel engines
2. Installation Position
Installed inside the cylinder head of 6CT diesel engines, fitted around the intake valve stem. It sits between the valve retainer and the cylinder head spring seat, paired with intake valves, valve locks and retainers as a complete valve assembly.
3. Functions
- Provides stable preload to close the intake valve tightly after it opens.
- Ensures the intake valve moves synchronously with the camshaft, maintaining accurate valve timing.
- Abserves vibration and impact during high-speed engine operation, preventing valve bounce and abnormal wear.
- Guarantees normal air intake for the engine cylinder, supporting regular combustion and engine power output.
