Product Descreiption
1. Basic Parameters
- Part Number: 3923564 (replaces 3901187)
- Engine Fit: Cummins 6CT, 6CTA, 6CTAA 8.3L diesel engines
- Material: High-grade cast iron (or powder metallurgy)
- Dimensions (inches):
- Inner Diameter (ID): 0.3761″
- Outer Diameter (OD): 0.6299″
- Overall Length: 2.835″
- Type: Intake & Exhaust (universal)
2. Installation Position
- Location: Pressed into the engine cylinder head.
- Placement: One guide per valve (intake and exhaust), inserted into precision-drilled holes in the cylinder head casting.
- Orientation: The valve stem slides through the center hole; the top often accepts a valve seal.
- Mounting: Installed with an interference fit (press-fit) for stability.
3. Functions
- Guides Valve Movement: Ensures the valve stem moves straight up and down, keeping the valve face aligned with the valve seat for a perfect seal.
- Heat Transfer: Conducts heat away from the hot valve stem into the cylinder head and cooling system.
- Wear Resistance: Acts as a replaceable wear surface to protect the more expensive cylinder head from damage.
- Stabilization: Prevents side-loading of the valve stem during engine operation.
