Raw Water Strainers and Accessories
Boat owners depend on seawater to operate many boat systems — but they need a way to prevent dirt, sediment, crustacean shells and other debris from getting into those systems. A marine sea strainer catches those particles before they can reach the water pump, helping equipment last longer and perform better. We offer a variety of seawater strainer kits to protect engines, air conditioners, generators, livewells and more. Boat owners can always get the correct parts from our extensive catalog and enjoy free U.S. shipping on orders over $100.
Protect Your Boat with Seawater Filtration
Sea strainers come in several designs with NPT or barbed fittings for secure connections. Those fittings range from 1/2-inch to 2.5 inches or more depending on the lines or hoses you’re using. Durable materials such as bronze, stainless steel and polyethylene resist saltwater corrosion — and the filters are fully serviceable to extend their operating life. Specialty components include cooling water strainers to lower temperatures and special bilge water strainers for these heavy-duty pumps. Trust the leading marine plumbing brands such as Groco, Sherwood, Perko, Vetus and Jabsco.
Marine Parts Source also has parts and accessories to maintain or repair your current sea strainer. Shop for OEM replacement strainer bowls, caps, tie rods, seals, guards and baskets at competitive prices. Many of these products are in stock, which ensures faster delivery and gives our customer service representatives a deeper understanding of each component so they can better assist you. Contact us at 866-388-0390 to discuss your raw water strainer needs.
Strainers
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3/4 in. NPT Seawater Strainer | Sherwood 18001SHER-18001Qty In Stock: 119Brand: Sherwood Pumps20 mesh raw water intake strainer offers full flow filtering to protect engines, generators, air conditioners and other pumps from debris. Learn More
Seawater Strainer Screen | Sherwood 11810SHER-11810Qty In Stock: 7Brand: Sherwood PumpsReplacement 20 mesh stainless steel screen for Sherwood 1/2 in. and 3/4 in. NPT marine raw water strainers. Learn More
Strainer Hinged Cover Bolt | Perko 0493DP799LPERKO-0493DP799LQty In Stock: 20Brand: PerkoReplacement hinged bolt for #6 & #7 size Perko 0493 series 1 in. & 1 1/4 in. NPT intake water strainers. Learn More
Seawater Strainer Bracket | Sherwood 14238SHER-14238Qty In Stock: 4Brand: Sherwood PumpsMounting bracket for Sherwood 1 1/4 in. NPT marine raw water strainer. Learn More
Pump Inlet Strainer | Johnson Pump 09-24653-02-CNJP-09-24653-02-CNQty In Stock: 7Brand: Johnson PumpInlet water strainer works exclusively with Johnson Pump KlickTite port pumps to protect from damage due to incoming debris. Learn More
Type 330 Cooling Water Strainer, 32 Millimeter | Vetus FTR330/32VETUS-FTR330/32Qty In Stock: 2Brand: VetusRaw water strainer that collects and filters out debris before they reach the engine cooling system. Learn More
Stainless Steel Strainer Basket for 1/2 Inch 0493 Strainer | Perko 049300499DPERKO-049300499DQty In Stock: 4Brand: PerkoPerko stainless steel replacement basket for the 0493 size 4 intake strainer which is equipped with 1/2 inch NPT threads. The outside diameter of this replacement basket is 1-13/16 inches and it measures 4-3/8 inches tall.
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Bronze Top Cover with Gasket | Perko 049300599EPERKO-049300599EQty In Stock: 3Brand: PerkoBronze Top Cover with Gasket Learn More
3 inch Chrome-Plated Gas Cap | Perko 0526C0399APERKO-0526C0399AQty In Stock: 1Brand: Perko3 inch Chrome-Plated Gas Cap
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1-Inch Pump Strainer with Bracket | Groco WSB-1000-PGROCO-WSB-1000-PQty In Stock: 0Brand: Groco1-inch pump strainer with bracket
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1-1/4 In. PUMP STRAINER & BRACKETGROCO-WSB-1250-PQty In Stock: 0Brand: Groco1-1/4 In. PUMP STRAINER & BRACKET Learn More
Fresh Water Swivel Nut Strainer | Shurflo 255-315SHUR-255-315Qty In Stock: 8Brand: ShurfloFresh Water Swivel Nut Strainer Learn More© 2025 Marine Parts Source. All Rights Reserved.