0.5mm Cylinder Base Gasket for KTM, Husqvarna & GasGas 250/300 - A44030035050

This 0.5mm cylinder base gasket is a genuine OEM replacement part designed to provide a reliable seal between the engine case and the cylinder block. It plays a critical role in maintaining proper engine compression and preventing coolant or oil leaks. Using an original equipment manufacturer gasket ensures precise thickness and material quality for optimal engine performance.

This gasket fits a wide range of 250cc and 300cc two-stroke models from 2023 to 2026. Compatible KTM models include the 250 SX, 250 XC, 250 XC-W, 300 EXC, 300 SX, and 300 XC-W, including Six Days, Champion Edition, and Hardenduro versions. It also fits Husqvarna TC 250, TC 300, TE 250, TE 300, and TX 300 models, as well as GasGas EC 250, EC 300, EX 250, EX 300, and MC 250/300 variants.

Constructed from high-quality Klingersil sealing material, this gasket is engineered to withstand the high temperatures and pressures of a high-performance engine. The 0.5mm thickness allows for precise tuning of the cylinder height and port timing, which is essential during top-end rebuilds or routine maintenance.

When installing a new cylinder base gasket, ensure that both the engine case and cylinder surfaces are perfectly clean and free of old residue. It is recommended to replace this gasket every time the cylinder is removed to ensure a leak-free seal. Always follow the manufacturer's torque specifications for the cylinder base nuts to prevent warping.

Check compatibility list below to see if this part fits your motorcycle model.