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Sherwood Pump 12859 Seal and Seat Assembly for Raw Water Pumps

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

12859
06/01/2036 3:39 PM
Sale Price

$34.66

2 left at this price

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sherwood 12859 is a mechanical seal and seat assembly designed for Sherwood raw water impeller pumps. This critical component maintains a watertight seal in the pump housing, preventing leaks and ensuring reliable operation of your marine engine's cooling system.

Key Features:

  • Buna rubber construction for durability and chemical resistance
  • Direct OEM replacement for multiple Sherwood pump models
  • Essential maintenance part for raw water pump rebuilds
  • Compatible with both seawater and freshwater applications

Fits Sherwood Pump Models: G1, G2, G3, G4, G5, G7, G7B, G8, G11, G15, G20, G21, G22, G26, G30, G30-2B, G45, G45-1, G46, G50, G55, G56, G85, G95, G151, G155, G157, K75B, M71, G903, G905, G908, G9901, G9903, G1009, G1503, G1505, G1508, and others.

Replaces: Sherwood 08388, 12322

Regular replacement of seal and seat assemblies is crucial for maintaining pump performance and preventing costly engine damage from overheating. This assembly is a key component in any Sherwood pump rebuild or preventative maintenance service.

Products specifications

Description

Seal & Seat (multiple pump application)

Simple to execute. The order came unbelievably fast.

Was easy to find my original remplacement part and cheap

Beat price. Super fast processing and shipping. Will shop there again.

Very fast and had items that I could find nowhere else.

Wish you had my other Item, MA29038 Thanks

Typical. No issues...

Lowest prices around the web and excellent customer service. The only real issue was the wait between placing the order and when it was shipped. Took 4 days but I chalk that up to the large amount of business they due to their prices being so competitive. For the lowest prices that I've seen I didn't mind waiting a bit longer!

Wow it was shipped so quickly it arrived the next day. Will be ordering again.

So far so good.

Very prompt service constantly helping me keep track of my order.

Very smooth.

Very easy transaction. Website easy to navigate. Order shipped the next day. Pleasure to do business with!<br><br>

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