Thru Hull Fittings & Strainers

      • T&H Marine Thru-Hull Fittings Straight White

        T-H Marine Thru-Hull Fittings Straight White All T-H Marine Thru-Hull Fittings are made of the highest quality virgin polypropylene to ensure durability and attractive appearance. Polypropylene is UV stabilized to provide longevity. Available in...

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      • TH Marine Duckbill Overboard Drain Scupper

        T-H Marine Duckbill Overboard Drain Scupper Tough Thermoplastic Flapper Seals Tight Under Water Pressure Easy to Install Over Drain Tubes Outer Ring is 2-3/4" in Diameter Color: Black/White

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      • Groco Bronze Thru Hull With Nut

        Groco TH Series Standard Length Bronze Thru Hull w/ Nut Groco TH Series Thru Hulls are constructed of C83600 bronze and feature a NPSM / NPT combination thread. These thru hulls are available in a variety of sizes and come with a nut included. NPSM /...

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      • Groco Pipe To Hose Bronze Fitting

        Groco Pipe to Hose Bronze Fitting Groco bronze Pipe to hose fitting. Standard Flow - the hose ID is the same as the pipe size (ie: PTH-750 has 3/4" NPT pipe thread and accepts 3/4" ID hose). Sizes from 1/2" to 5" UL Listed...

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      • Groco In-Line Ball Valve

        Groco IBV Series Full-Flow Flanged In-line Ball Valve The Groco IVB Series In-Line Ball Valves are full-flow valves with a patented selectable handle rotation. The handle has a square hole to accept standard ratchet to help reach valves in hard-to-reach...

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      • Attwood Marine Scupper Valve

        Attwood Marine Scupper Valve Provides a water exit for boats with self-bailing cockpits. Acetal construction. Accommodates 3875B thru-transom thru-hull connector (screw holes must be drilled for installation.) Diameter: 2-7/8". Use as a replacement...

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      • Groco 90° Bronze Elbow Pipe To Hose

        Groco 90 Degree Bronze Elbow Pipe To Hose Fitting This Groco pipe to hose fitting provides a 90 degree male NPT to hose connection. It is constructed of C83600 bronze and is available in a variety of sizes. Standard flow UL Listed 647B Note:...

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      • roco Stainless Steel Thru-Hull Fitting

        Groco Stainless Steel Hose Thru-Hull Fitting Groco stainless steel thru-hull fittings are constructed of durable #316 stainless steel and are available in a range of sizes.  NPS thread with hose connection UL Listed...

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      • Groco Tri-Flanged Ball Type Seacock

        Groco FBV Series Tri-Flanged Ball Type Seacock Groco FBV Series Ball-Type Seacocks are manufactured for full flow and feature a triangular base. The patented field reversible handle allows you to select the closed position for orientation that best...

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      • Groco Hi-Speed Strainer With Nut

        Groco Hi-Speed Strainer with Nut The Groco Hi-Speed Strainer is a NPT combo scoop thru hull that is designed for increased flow compared to standard thru hulls. This strainer is constructed of C83600 bronze and is available in a variety of sizes...

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      • Attwood Marine Plastic Thru-Hull Fittings

        Attwood Marine Thermoplastic Resin Thru-Hull Fitting These thru-hulls are made with a durable, thermoplastic construction which prevents electrolysis. Caution: Thru-Hull connectors are designed for installation above the water line only.

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      • T&H Marine  Inline Check Valve

        A great solution to provide a scupper check valve in the drain line. Allows use of standard thru-hull fittings in the cockpit and on the hull exterior. Features: Hose Size: 3/4", 1-1/8", and 1-1/2" Double Barb Inline Scupper- Black Prevents...

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      • TH Marine Flush Mount Scupper Adapter

        These scupper valves are simply the best and most fool-proof of any flush mount scupper valve available. The flapper is molded of a flexible thermo-plastic that is totally impervious to the effects of sun and chemicals found in the marine environment...

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      • T&H Marine  3 Way "Y" Fitting

        T-H Marine barbed wye fittings (Y fittings) are molded specifically to fit marine hose dimensions. A fitting with three openings, a wye is used to create branch lines. It is a type of tee fitting which has the side inlet pipe entering at a 45° angle, or...

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      • Groco Seacock Backing Block

        Groco Seacock Backing Block Use the Groco Seacock Backing Block to improve flanged seacock installation. Groco backing blocks are made from an environmentally-friendly PVC foam specially formulated for marine applications. The rigid 1/2" thickness...

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      • T-H Marine 90 Degree Elbow Fitting

        T-H Marine barbed elbow fittings are molded specifically to fit marine hose dimensions. A barbed elbow fitting allows you to make a 90 degree turn in hose routing without kinking hose. They can also be used as a hose junction for hose repair. Our...

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      • Groco Bronze Pipe Nipple

        Groco Bronze Pipe Nipple Groco's PN Series cast bronze pipe nipples provide exact alloy compatibility for making inter-connections between numerous marine components such as seacocks, strainers, and check valves. A cast-in wrench flat simplifies...

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      • Attwood Straight Barbed Thru-Hull Boat Fittings

        Attwood Stainless Steel Straight BarbedThru - Hull Fittings Polish your image with these beautiful, durable stainless steel fittings.  Why specify plastic parts when these fittings will last the life of the boat.  Caution:  Stainless thru...

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      Marine Thru Hull Fittings and Strainers

      Scoop strainers are designed to prevent debris from entering and clogging your cooling system, while marine thru hull fittings connect plumbing or fuel hoses from the interior to the exterior. These may not be expensive boat parts, but they are very important. That’s because thru hull fittings/strainers ensure that water does not breach your boat’s infrastructure. Many a craft has been scuttled for lack of a water-tight fitting, so be sure to maintain your boat’s fittings and strainers with reliable replacement parts from Wholesale Marine.

      Wholesale Marine carries thru hull fittings and strainers by Attwood, Garmin, >Groco, Johnson Pump, Shurflo, T&H Marine, and Whale Marine. For years of efficient service, we recommend Groco’s Tri-Flanged Ball-Type Seacock. It features a patented field reversible handle with a choice of closed position options, and will accept standard ratchets.

      For Great Prices and Selection, Shop Wholesale Marine!

      T&H Marine’s Inline Check Valve is available in three sizes to accommodate the most common standard cockpit and hull exterior fittings. This inline scupper was designed for use above the waterline, while Attwood’s Stainless Steel Straight Barbed Thru-Hull Fitting is also available in three sizes, and designed for a long service life!

      Wholesale Marine carries everything our customers need for their boating life at very competitive prices. This includes marine thru-hull fittings and strainers.So, if you have a question about our product selection, or wish to place an order, just call us Monday through Friday, from 9:00 AM until 6:00 PM, EST, at (877) 388-2628. Most orders ship the same day, for a flat rate. Be sure to ask about our Captain’s Club Rewards program for additional discounts the next time you shop with us.