My Account
Shopping Cart

Sherwood Pump 18001-SHW Seastrain 3/4" NPT Raw Water Seawater Strainer 20-Mesh

Manufacturer

Sherwood Pump

<p>Sherwood Pump's history dates back to 1903, when William Sherwood and his business partner David Buick operated a copper brass plumbing business. After parting ways, Sherwood developed the business into a foundry and machine shop, sought out by Henry Ford and the Dodge brothers for Detroit's expanding auto-driven industries. In the 1920s, entrepreneur Chris Smith's company, Chris-Craft, incorporated William Sherwood's plumbing expertise to develop the first seawater pumps for marine inboard engines.</p> <h3>A Legacy of Marine Engineering Excellence</h3> <p>During World War II, a Chris-Craft personnel carrier equipped with a Sherwood pump was the first Allied landing craft to hit Normandy beaches on June 6, 1944. During this period, Sherwood supplied pumps to marine engines from Buda, Caterpillar, Cummins, Gray, Hercules, and Packard. Following WWII, as the pleasure boating industry grew, Sherwood evolved to accommodate the exacting cooling pump needs of this expanding market, keeping pace with new engines from Chrysler, Ford, and GM through relationships with Chris-Craft, Chrysler Marine, Crusader, and OMC.</p> <h3>Industry-Leading Cooling Solutions</h3> <p>Today, Sherwood remains the trusted choice for <a href="/7562-sherwood-pump-engine-cooling-pumps-accessories-200368">engine cooling pumps and accessories</a> across both pleasure and commercial marine applications. The seawater pump serves as the heart of the marine engine, supplying continuous water flow to maintain consistent engine temperatures—critical because the number one reason for premature engine wear is overheating. Now part of Pentair, the Sherwood brand has become the seawater pump of choice for many of the world's most prestigious engine manufacturers.</p> <p>Sherwood's comprehensive line of <a href="/7562-sherwood-pump-engine-water-pump-2208">engine water pumps</a> features multiple mounting configurations including flange-mounted, pulley-driven, and crankshaft-mounted designs. These pumps are available for a wide range of applications varying in type, flow requirements, speed, size, and weight. Each pump is engineered to meet the specific cooling demands of modern marine engines, whether for propulsion or generator sets.</p> <h3>Genuine Replacement Parts and Service Components</h3> <p>Maintaining peak engine performance requires regular service intervals and quality components. Sherwood's <a href="/7562-sherwood-pump-impellers-200573">impellers</a> are designed as precision-engineered wear components that should be replaced annually for optimal engine health. Genuine Sherwood replacement parts are often copied, but never duplicated. The company offers complete repair and service kits containing all necessary gaskets, seals, and wear plates to restore pumps to original specifications.</p> <p>For system protection, Sherwood manufactures <a href="/7562-sherwood-pump-sea-strainers-200906">sea strainers</a> that prevent debris from damaging downstream cooling system components. These strainers are designed to be durable and easy to clean, featuring non-corrosive construction that ensures long service life. Available in multiple port sizes, they provide essential filtration for raw water intake systems.</p> <p>Sherwood also offers specialized <a href="/7562-sherwood-pump-automatic-transmission-overhaul-kit-10998">automatic transmission overhaul kits</a> for marine drive systems, rounding out their comprehensive portfolio of marine power transmission components. With over a century of manufacturing expertise and a reputation built on reliability, Sherwood Pump continues to set the standard for marine engine cooling solutions.</p>

Part Number

18001-SHW
07/12/2036 9:51 PM
Sale Price

$43.78

In Stock (10+)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sherwood 18001-SHW Seastrain is a full-flow, inline raw water seawater strainer designed for marine applications. Featuring 3/4" FNPT female ports and a 20-mesh stainless steel screen, this strainer delivers effective filtration at ultra-low pressure differential — protecting engines, generators, air conditioners, washdown pumps, and saltwater galley pump intakes from debris and contaminants.

Key Features:

  • 3/4" FNPT female inlet and outlet ports for easy inline installation
  • 20-mesh stainless steel screen with a large ratio of screen area to port size for maximum flow
  • Clear bowl allows quick visual inspection and cleaning without removing the strainer from the line
  • Non-corrosive construction built for harsh marine and saltwater environments
  • Stainless steel ferrule reinforcements on ports for added durability
  • Lightweight design supports simple inline mounting
  • Optional mounting bracket available separately (Part #14240)

Replacement Parts & Accessories:

  • Replacement Bowl: #14379
  • Mounting Bracket: #14240 (sold separately)
  • O-Ring: #11805
  • Replacement Screen: #11810

The Sherwood 18001-SHW Seastrain is a trusted choice for boaters who demand reliable, low-maintenance raw water filtration as part of their vessel's cooling or plumbing system.

Got the order fast and got it installed just in time for a fishing trip.....thanks bostplicity.

Shopping at checkout was really easy, but I haven't installed the product yet so I can't give a proper review

Great experience. Competitive price.

Price was fantastic compared to other distributors. Shipping was fast.

Fast shipping

Quick and easy. Last place to have this in stock.

No issues great pricing

easy to order and great prices fast shipping I am a repeat customer,

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy