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Engine Piston Cummins 3911400 | 111250, M-3911400
High-quality standard size (STD) engine piston designed for Cummins 4BT 3.9L and 6BT 5.9L diesel engines. Comes complete with the piston pin and retaining clips for a reliable engine rebuild.
Description
High-Performance Engine Piston for Cummins 4BT & 6BT Engines
Restore your engine’s compression and efficiency with this premium standard size (STD) engine piston. Specifically engineered for heavy-duty Cummins 4BT (3.9L) and 6BT (5.9L) diesel engines, this piston is manufactured to meet or exceed rigorous industry standards, ensuring long-lasting durability and optimal thermal performance under extreme operating conditions.
This piston features an integrated Alfin insert for enhanced ring groove durability and resistance to wear. It is sold as a complete assembly, including the piston pin and retaining clips, making it ready for installation during your next engine overhaul.
Product Specifications:
- Engine Compatibility: Cummins 4BT 3.9L, 6BT 5.9L
- Piston Size: Standard (STD) – 102.00 mm Diameter
- Compression Height: 71.60 mm
- Total Height: 105.50 mm
- Combustion Chamber Depth/Diameter: 64.00 mm
- Piston Pin Dimensions: 40.00 mm x 76.00 mm
- Piston Ring Configuration: 3T x 2.5 x 4 mm
- Alfin Insert: Yes
- Piston Cooling Gallery: No
- Included Components: Piston body, piston pin, and 2 retaining clips
Key Benefits:
- Alfin Reinforcement: Features a high-resistance Alfin insert in the top ring groove to prevent premature wear and extend piston service life.
- Complete Assembly: Includes the precision-ground piston pin and secure retaining clips for a hassle-free installation.
- Robust Construction: Built from advanced alloys designed to withstand high combustion temperatures and pressures.
