
3943933‑SCREW, HEX FLANGE HEAD CAP
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 No.: 3943933
- Product Name: Hex Flange Head Cap Screw (Valve Lever Screw)
- Thread Size: M10×1.5
- Length: 68 mm
- Brand: Cummins (Genuine Original Part)
- Weight: 0.05 kg
- Material: High‑strength alloy steel
2. Installation Location
Mounted on the cylinder head of Cummins diesel engines. It fastens the rocker lever assembly (valve rocker arm) onto the cylinder‑head pedestal.
Applicable engine models: ISL 8.9, ISLe, QSL9, QSC8.3 series engines.
3. Function
This high‑strength fastener firmly secures the rocker lever. It maintains accurate valve‑train geometry, ensures stable transmission of camshaft motion to open and close intake & exhaust valves during engine operation, and prevents loosening under engine vibration.




