BCBC CSL203 Engine Cylinder Liner

Engine Cylinder Liner Overview

Melling CSL203 is a standard replacement engine cylinder liner for rebuild work that requires a precise sleeve solution. It is built from cast iron and sized for universal use, making it a practical choice for engine block service where bore restoration is needed.

Key Features

• Cast iron construction for cylinder block rebuild applications
• Standard replacement grade for service work
• Universal fitment for broad engine rebuild use
• 6.75 in. length with 0.125 in. wall thickness
• 3.938 in. cylinder bore diameter, 4.19 in. outside diameter, and 3.907 in. inside diameter

Detailed Description

The Melling CSL203 cylinder liner is part of the Stock line and is engineered as an economical replacement for cylinder sleeves used during quality engine rebuilds. Melling manufactures these liners with attention to material selection and workmanship, and this version is offered as a universal, standard replacement liner rather than a vehicle-specific component. The CSL203 part number is also referenced as L45, L47, and ML203 for cross-reference purposes.

This cylinder liner is listed for applications including Chevrolet C50, Chevrolet C60, Chevrolet C70, GMC C5000, GMC C6000, GMC C7000, Oldsmobile Cutlass, Oldsmobile Delmont 88, Oldsmobile F85, Oldsmobile Vista Cruiser, Oldsmobile Jetstar 88, Oldsmobile 442, and 1956-1957 Pontiac and GMC truck models. For rebuilders working on Chevrolet and GMC truck engines or classic Oldsmobile and Pontiac engines, CSL203 provides a direct sleeve option for block repair and restoration work.

What It Is Used For

• Restoring worn cylinder bores during engine rebuilds
• Replacing damaged or out-of-spec cylinder sleeves
• Supporting block repair on classic Chevrolet and GMC engines
• Serving rebuild work on Oldsmobile and Pontiac applications
• Providing a standard replacement liner for machining and overhaul projects

Installation Notes and Tips

Measure the block bore, liner outside diameter, and finished bore requirements before installation. Because this is a universal cylinder liner, final fit depends on machining and engine rebuild specifications. Verify the required sleeve dimensions against the engine block before pressing or machining the liner into place.

Quality Assurance

Melling positions this liner as a stock replacement part built with quality materials and workmanship for engine rebuild service. CSL203 is manufactured for standard replacement use in rebuild environments where dimensional accuracy and material consistency matter.