WATERAX® was informed that the M4AC spark plug and PVL spark plug cap has been discontinued.

The M4AC spark plug with 18 mm threads has been discontinued. A suitable replacement has been tested and approved: NGK AB-8. The change is effective immediately. The part number (800850) and item description (R-629 SPARK PLUG 18 MM) remain unchanged.

M4AC Spark Plug Tech-Note

The spark plug cap has been discontinued. A suitable replacement from PVL has been tested and approved. The change is effective immediately. The part number (800121) and item description (R-650 PROTECTOR, SPARK PLUG) remain unchanged.

PVL Spark Plug Cap Tech-Note