Johnson & Evinrude Outboard Oiling System Check Valves

Keep your Johnson or Evinrude 2-stroke outboard running strong with our high-quality oiling system check valves. These one-way (non-return) valves prevent oil drain-back in VRO oil lines, helping to maintain proper lubrication from idle to wide-open throttle. We stock dependable EMP replacements that cross-reference popular OEM numbers 436194, 436385, and 392988—a direct solution for many V4, V6, and V8 engines.
Common symptoms of a failing check valve include oil line air bubbles, hard restarts after sitting, or intermittent oil alarms. If you’re upgrading or rebuilding the oiling system, browse related components like oil pumps, tanks, and warning modules to complete the job. Fast shipping from OBParts and knowledgeable support if you need help cross-referencing BRP numbers to EMP replacements.