3901177-6CT valve collet
We mainly deals in Dongfeng truck accessories (engine/axle/gearbox/cabin), especially Dana axle accessories and Cummins engine parts (4BT, 6BT, 6CT, 6L, ISBE, ISDE, ISLE,ISF2.8, ISF3.8, NTA855, KTA19,KTA38, KTA50, M11, ISM, etc.) with great advantages
Product Descreiption
1. Specifications
- Part Number: 3901177
- Type: Split valve collet (2-piece, half-cone)
- Material: High‑strength steel, heat‑treated
- Inner Diameter: 0.3720 in (9.45 mm)
- Length: 0.3720 in (9.45 mm)
- Weight: ≈0.025 kg per piece
- Quantity per valve: 2 pcs
- Application: Cummins 6CT / 6CTA 8.3L diesel engine
2. Installation Position
- Located in the cylinder head, at the top end of the valve stem
- Fits into the groove on the valve stem
- Outer taper locks into the inner taper of the valve spring retainer
- Secures both intake valves (3924492) and exhaust valves (3921444)
3. Function
- Locks the valve spring retainer to the valve stem
- Transfers spring force to the valve, ensuring precise opening/closing
- Prevents the valve from dropping into the combustion chamber
- Maintains valve timing stability and reduces component wear
- Withstands high‑speed reciprocating loads and engine vibration
