Illustrative photo — the delivered item may differ in appearance. Orders are fulfilled by catalog part number (SKU).
Piston Kit Cummins 3802132 | 3908815, A77519, A77731, A77734
Enhance your engine’s performance and durability with this premium +0.50mm oversize piston kit for Cummins 4BT and 6BT engines. Engineered to meet rigorous standards, it includes the piston, pin, and clips for a complete and reliable rebuild.
Description
High-Performance +0.50mm Oversize Piston Kit for Cummins B-Series Engines
Restore your engine’s compression and efficiency with this premium-grade +0.50mm (.020″) oversize piston kit, designed specifically for Cummins 4BT 3.9, 6BT 5.9, ISB 3.9, and ISB 5.9 diesel engines. This kit is engineered to withstand high thermal and mechanical loads, making it the ideal choice for demanding heavy-duty applications and engine rebuilds.
Key Features & Benefits
- Complete Assembly: Comes fully equipped with the piston, heavy-duty piston pin, and retaining clips for a hassle-free installation.
- Alfin Insert Technology: Features a reinforced Alfin insert in the top ring groove to significantly reduce wear and extend piston service life under high-pressure conditions.
- Precision Engineering: Manufactured to exact dimensional tolerances to ensure optimal combustion chamber sealing and reduced blow-by.
Technical Specifications
- Base Standard Diameter (STD): 102 mm
- Oversize: +0.50 mm (+0.020 in)
- Piston Rings Configuration: 3T x 2.35 x 4 mm
- Combustion Chamber Depth: 59 mm
- Piston Pin Dimensions: 40 mm x 75 mm
- Total Height: 105.50 mm
- Compression Height: 71.80 mm
- Alfin Insert: Yes
Engine Compatibility
This piston kit is compatible with the following Cummins engine models:
- Cummins 4BT 3.9
- Cummins 6BT 5.9
- Cummins ISB 3.9
- Cummins ISB 5.9
Please verify your engine’s CPL (Control Parts List) and cylinder bore size before ordering to ensure correct fitment.
