Cylinder Head Collar Nut M10x1.25 for KTM & Husqvarna 2007-2026 - 77336088210

This genuine OEM collar nut is a critical fastener designed specifically for the cylinder head assembly of high-performance four-stroke engines. It features an M10x1.25 thread pitch and a 13mm hex head (SW13), ensuring a secure and precise fit. As an original equipment manufacturer part, it meets the exact specifications required to maintain engine integrity and prevent loosening under high thermal stress.

This part is compatible with an extensive range of models, including the KTM 250 SX-F, 350 SX-F, 450 SX-F, 250 EXC-F, 350 EXC-F, and 450 XC-F from 2007 to 2026. It also fits Husqvarna FC 250, FC 350, FE 250, FE 350, and FX 350 models, as well as GasGas MC 250F, MC 350F, EC 250F, and EX 350F. Additionally, it is used on specialized machines like the KTM 450 Rally Factory Replica and the Freeride 250/350 series.

Constructed from high-strength steel with a corrosion-resistant finish, this collar nut is built to withstand the demanding environment of a motorcycle engine. The integrated flange distributes pressure evenly across the mating surface, reducing the risk of damage to the cylinder head. Using genuine fasteners ensures that torque settings remain accurate during assembly and maintenance.

When replacing cylinder head fasteners, it is highly recommended to follow the manufacturer's torque specifications found in your service manual. Always inspect the threads and the seating surface for debris before installation to ensure a proper seal. Replacing worn or corroded nuts during top-end rebuilds helps maintain the long-term reliability of your engine.

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