The Makita 213258-4 O Ring 17.5 is a genuine sealing component designed for the hammer mechanism of Makita rotary and combi hammers, including the BHR242 and BHR243. This small but critical rubber part maintains an airtight and grease-tight seal under repeated impact and vibration. By retaining lubricant and preserving compression, it helps sustain consistent striking performance and reduces the risk of power loss during heavy site work. Worn, flattened, or perished O-rings are a common cause of reduced hammer efficiency. Replacing this part during a routine overhaul or rebuild restores reliable operation and extends service intervals, reducing unplanned downtime for contractors and tradespeople who depend on their tools daily. Precision-manufactured to Makita specification, the 213258-4 is a direct fit replacement that simplifies servicing. Its compatibility with multiple Makita rotary hammer models also makes it a practical component to stock for ongoing preventative maintenance. Features and Benefits: • Genuine Makita part for assured fit and compatibility • Durable rubber construction withstands impact loads and vibration • Maintains airtight and grease-tight seal to prevent leakage and power loss • Precision-made to Makita specification for straightforward fitting • Compatible with multiple Makita rotary hammer models including BHR242 and BHR243 • Supports preventative maintenance and reduces unplanned downtime • Replaces worn, flattened, or perished O-rings during routine overhauls Specifications: Manufacturer Part Number (MPN): 213258-4 O Ring Size: 17.5 Compatible Models: BHR242, BHR243
