SKU: KRP1920
MPN: 1920
The Nozzle Plugs Billet Alum from KING RACING PRODUCTS are precision-engineered flush plugs designed for marine cooling systems and jet propulsion nozzles where water bypass or maintenance access is required. Built for demanding boating applications, these plugs seal off nozzle passages reliably during operation or storage, preventing unwanted water ingress and protecting internal components from corrosion and debris. Whether you're maintaining a high-performance jet boat, closed-loop cooling system, or any vessel with threaded nozzle ports, these aluminum plugs deliver the durability and dependability water-based operations demand.
Machined from billet aluminum and finished in black anodize, the Nozzle Plugs Billet Alum feature a 1/2-20 thread specification that matches standard marine nozzle ports, with a compact 3/4-inch length ideal for tight engine bay or jet pump installations. Each plug incorporates an integrated O-ring seal that creates a watertight barrier without requiring additional gasket material, simplifying installation and ensuring consistent performance across thermal cycling and high-vibration environments typical of marine use. The black anodized finish provides corrosion resistance in saltwater and freshwater settings alike, protecting the aluminum substrate and maintaining a professional appearance year after year.
Sold as a set of 8 plugs, this quantity covers multiple nozzle ports or allows for spares during extended boating seasons. Experienced boaters and marine technicians favor billet aluminum plugs for their lightweight construction, superior machinability, and long service life compared to plastic alternatives. Installation is straightforward—simply thread the plugs into 1/2-20 nozzle ports by hand or with a light wrench, allowing the O-ring to seat naturally. Compatible with jet boats, inboard cooling systems, and any marine propulsion setup using standard 1/2-20 threaded nozzle passages, these plugs are an essential addition to any serious boater's maintenance kit.
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