Berkeley Jet Drive Hand Hole Cover Seal O-ring Cleanout S13734. This seal is for theOLD style Hand cleanout. Old style has square edges, it will have casting numbers (M-4128) and say ("BERKELEY JET DRIVE") on the cover.
Berkeley Jet Drive Hand Hole Cover Seal O-ring Cleanout NEW STYLE Cover S13734
New! Berkeley Jet Drive Inducer, Berkley Jet Pump, Jet Boat, Jet Drive Inducer
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Berkeley jet pump hand hole clean out cover Part Number: M-4160
Berkeley Jet Pump Hand Hole Cover with O-ring M-4128 M4128 Square Style