Motorcycle Oil Filter Cleaner Element Fit For SR Max 4T 125 300 QJMOTOR Flash 350 QJ350-12 Engine Parts Wide Compatibility Fit For SR Max 4T 125 300 QJMOTOR Flash 350 QJ350-12 4 stroke scooter engine lubrication system for daily riding Installation Spin on mounting aligns engine thread sealing plane with no or extra fitting steps Multi layered filter medium traps tiny road particles to maintain steady oil circulation inside engine assemblies Material Craft Woven filter core paired with elastic outer ring holds stable shape under long running vibration Size Uniform thread pitch compression thickness creates balanced pressure against engine side covers