Engine Piston Barrel Cylinder Base Gasket – GT125 GV250 GT250 GV125

Description

Working on your GT125 or GV250 engine block is a core part of keeping these legacy bikes running smoothly. The cylinder base gasket is a critical, single-use mechanical barrier that ensures a flush, airtight link between your lower engine crankcase and the upper cylinder barrel. Never attempt to reuse an old crushed gasket or rely on messy liquid sealants that squish out into the oil galleries—do the repair job right first time to stop annoying leaks down the line.

💎 Stop Leaks with a Reliable Base Seal

📜 Confirmed Fitment Guide

🔧 Install Tips

• Clean the Mating Surfaces: Use a flat plastic gasket scraper to lift away stubborn bits of the old paper liner until the alloy case faces are spotless. Avoid sharp metal screwdrivers or steel blades, as scratching the aluminum face creates path channels that lead to future leaks.
• Install Completely Dry: Mount this paper compound gasket completely dry onto clean surfaces. Do not smear sticky silicone sealant or liquid RTV rubber across the faces; overused paste will squeeze inward and potentially clog fine crankshaft oil spray feeds.
• Tighten in Proper Sequence: Look up your specific engine model workshop manual to find the cross-pattern torque sequence for your cylinder head nuts. Tightening the cylinder down evenly prevents the base plate from warping or sealing unevenly.