The Makita 310345-1 Piston Cylinder is a genuine OEM replacement component for the percussion mechanism in compatible Makita SDS-Plus rotary hammer drills, including the HR2300, HR2610, HR2611 and DHR243 series. This precision-machined metal alloy sleeve sits at the heart of the hammering action, guiding the piston and striker to compress air and deliver consistent, controlled impact blows. When the original cylinder becomes worn or scored through extended use, impact performance drops noticeably — this direct-fit replacement restores that efficiency without the need for modification or specialist tooling. As a genuine Makita part, the 310345-1 is manufactured to the correct tolerances, ensuring proper alignment of internal moving parts and accurate sealing when used alongside the tool's serviceable O-rings and grease. This is particularly important for maintaining compression and preventing energy loss during repetitive drilling and chiselling into concrete, masonry and stone. The cylinder is suited to both reactive repairs and planned preventative maintenance during scheduled overhauls. For contractors and tradespeople who rely on their rotary hammers day-to-day, fitting a genuine part rather than a generic alternative helps protect the wider tool investment and supports a longer service life. Features and Benefits: • Genuine Makita OEM part (310345-1) for assured compatibility and quality • Precision-machined metal alloy construction for accurate guidance and smooth bore • Direct-fit replacement for listed models — no modification required • Restores hammering power, consistency and drilling efficiency under load • Engineered to withstand repetitive impact stress and abrasive dust ingress • Supports correct sealing and compression alongside existing O-rings and grease • Suitable for both reactive repairs and scheduled preventative maintenance • Helps maintain alignment of internal moving parts, reducing impact energy loss

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