
Illustrative photo — the delivered item may differ in appearance. Orders are fulfilled by catalog part number (SKU).
Semi-Finished Cylinder Liner Cummins C6207212121 SEMI | 6207-21-2121, 4900214, 6207-21-2110
High-quality semi-finished cylinder liner designed for Cummins B3.3 engines. Engineered to precise dimensions for reliable engine rebuilding and optimal compression.
Description
High-Performance Cylinder Liner for Cummins B3.3 Engines
The C6207212121 SEMI is a premium semi-finished cylinder liner designed specifically for Cummins B3.3 and QSB3.3 diesel engines. This dry cylinder sleeve provides a durable, wear-resistant surface for the piston rings, restoring optimal compression and engine efficiency during a rebuild. Because it is a semi-finished (SEMI) liner, it features a slightly smaller inner diameter that allows professional engine machinists to perform final boring and honing to achieve the exact clearance required for your pistons.
This part is also available under the numbers: 6207-21-2121, 4900214, and 6207-21-2110.
Key Features and Specifications
- Engine Compatibility: Fits Cummins B3.3 and QSB3.3 diesel engines.
- Type: Dry Cylinder Liner / Sleeve (Semi-Finished / SEMI).
- Flange Diameter (K): 104 mm
- Total Height (H): 180 mm
- Flange Height (k): 4 mm
- Outer Diameter (OD): 98 mm
- Material: High-grade cast iron alloy for superior thermal conductivity and wear resistance.
Whether you are performing a standard overhaul or a complete engine restoration, the C6207212121 SEMI cylinder sleeve ensures a precise fit and long-lasting durability under heavy-duty operating conditions.
Cross-Reference / Interchange Part Numbers
This part replaces / is interchangeable with the following part numbers:
- C6207212121 SEMI
- 6207-21-2121
- 4900214
- 6207-21-2110
- 6207212121
- 6207212110
- C6207212121



