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Moroso 37800 Deck Plug Kit for Chevy

4.5 (2) Write Review
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$29.98

$ 13 .99 $13.99

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  • DECK PLUG KIT-SBC
  • Deck Plugs, 6/pkg Water Pump Block Off And Filler Neck Kit; Deck Plug Kit; Wall Distortion Reduced; Restrict Water Flow to Cylinder Heads; Upper cylinder wall distortion is greatly reduced when these 3/4" NPT plugs are installed in the water passage holes in the decks of Small Block and 90 V6 Chevy engines Water holes must be tapped before the plugs are screwed in block must also be decked after installation Plugs also restrict water flow to the cylinder heads by reducing size of water...
  • brand: Moroso
  • manufacturer: Moroso


Water Pump Block Off


Marvin P. Flanders
August 8, 2025
Fit just like intended, just have to watch that you don't run the tap too far in or you will have plug to far below deck surface.
J. Shade
December 12, 2024
If you're running anything other than a stock timing chain cover you MUST make this mod or it's not going to work. You have to clearance the bottom bolt about 1/4" for it to clear an 8" damper. Once completed it looks great. Also as someone else mentioned once you have set TDC you should loctite the small screws holding the pointer. Mine were loose.