VEVOR Universal Cylinder Liner Puller 3-7/8 to 6-1/4 in Bore, Wet-Liner Extraction, 15 in Reach

VEVOR Universal Cylinder Liner Puller is a heavy-duty extraction tool engineered to remove wet liners from diesel engines with bores between 3-7/8" and 6-1/4" quickly and reliably.

This precision-built liner puller replaces OEM PT-6400-C, M50010-B, and 3376015 and is designed for service shops and technicians working on Mack, Cummins, Cat, Volvo, Detroit and International diesel engines. Constructed from premium steel, the assembly adapts to variations in liner thickness and depth while delivering the leverage and grip needed for safe removal of wet cylinder liners up to 15" deep.

How does the VEVOR liner puller adapt to different liner sizes and depths?

The tool accommodates wet liners with diameters from 3-7/8" to 6-1/4" and can reach liners up to 15" deep. Two spring-loaded support legs conform to the liner’s wall thickness and keep even distorted liners centered for extraction. Two adjustable defent pins let you set the engagement depth for secure bite without damaging the liner or block.

• Fits bore diameters: 3-7/8" to 6-1/4"
• Max insertion depth: 15 inches
• Minimum liner wall thickness acceptance: 0.148 inches
• Includes two adjustable defent pins and spring-loaded support legs

Which engines and OEM parts does this tool work with?

The puller is compatible with many heavy-duty diesel applications such as Mack, Cummins, Cat (including 3176, 3196, 3300, 3500, C10, C12, C15, C16 series), Volvo, Detroit, and International engines. It serves as a direct replacement for common OEM part numbers PT-6400-C, M50010-B, and 3376015, making it a straightforward substitute in professional inventories. Always verify bore size and liner style against the tool specifications before use.

• Direct OEM replacements: PT-6400-C, M50010-B, 3376015
• Works with Mack, Cummins, Cat, Volvo, Detroit, International engines
• Compatible with specific Cat series and other large diesel models

What features ensure secure, damage-free liner removal?

Security and controlled removal come from the spring-loaded legs that press the gripping surfaces evenly against the liner wall and the adjustable defent pins that prevent slippage. The main screw provides steady, incremental extraction force; lubrication of the screw prior to use is recommended to reduce wear and ensure smooth operation. The heavy steel construction resists bending or breaking during high-torque pulls.

• Spring-loaded support legs maintain even grip on liners
• Adjustable defent pins for precise engagement depth
• Lubricate screw before operation for smoother action
• Durable premium steel body for repeated heavy use

How should technicians prepare and use the liner puller safely?

Start by confirming bore diameter and liner condition, then position the puller and set the defent pins to the required depth. Apply lubricant to the main screw, tighten gradually while keeping the tool centered, and use steady force to avoid sudden jerks. After removal, inspect the block and liner seating surfaces for damage before installing a replacement liner.

• Verify bore size and liner type first
• Set defent pins and center the tool carefully
• Lubricate screw; apply steady, incremental torque
• Inspect surfaces post-removal for safe reassembly

Who is this for: The VEVOR Universal Cylinder Liner Puller is built for diesel mechanics, fleet maintenance shops, and professional rebuilders who need a reliable, OEM-replacement tool for heavy-duty wet liner extraction. It’s particularly useful when working on Mack, Cummins, Cat, and other large diesel engines where varying liner sizes and depths demand a flexible yet rugged solution. If you service engines with 3-7/8" to 6-1/4" bores and require repeatable, damage-minimizing removal, this tool is designed to fit into your workflow and inventory.