DJ 19021 Aftermarket PCM V8 Seawater Pump 1 Inch, Sherwood G21 | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement PCM V8 One-Inch Seawater Pump - Part Number: DJ 19021

New aftermarket engine-cooling seawater pump for PCM Ford and GM V8 marine engines using Sherwood G21, Correct Craft/PCM direct-drive and V-drive applications specifying the G21 pump. It replaces the listed OEM pump family and is supplied as a complete assembled pump. Match 1-inch ports and the Sherwood G21 mounting pattern.

⚙️ Key Features

• Direct aftermarket replacement for DJ 19021

• Heavy-duty marine-grade bronze or corrosion-resistant pump construction

• Crank/engine-driven pump according to PCM installation

• Port configuration: 1-inch inlet and outlet ports

• Serviceable flexible-impeller design with replaceable cover, cam, seal, shaft and bearings

🧰 Kit / Assembly Contents

• 1 × Complete seawater pump assembly - Part Number: DJ 19021

• 1 × Installed impeller - Installed Sherwood G21-family flexible impeller

• 1 × Installed shaft, bearing, cam and mechanical-seal assembly

• 1 × Installed end cover with gasket or O-ring sealing system

• Mounting / installation: Confirm pulley, bracket and rotation

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• DJ 19021 → Replaces / cross-references PCM/Sherwood G21 pump family

OEM / Related Numbers:

• PCM/Sherwood G21 pump family

Aftermarket / Verified Equivalents:

• Sherwood: G21

• DJ Pumps: DJ-19021

Service Parts / Kits:

• Sherwood/DJ G21 impeller and service-kit family

🚤 Compatibility

Commonly used on:

• DJ Pumps / PCM / Sherwood marine engine-cooling systems

Typically suits:

• Engine models:

• PCM Ford and GM V8 marine engines using Sherwood G21

• Correct Craft/PCM direct-drive and V-drive applications specifying the G21 pump

• HP / Output Range: Engine- or generator-rating dependent

• Engine Type: Marine diesel, petrol or generator engine as listed above

• Year Range: Engine-model, arrangement and serial-number dependent

• Port / Drive Identification: 1-inch inlet and outlet ports; Crank/engine-driven pump according to PCM installation. Confirm rotation, shaft/gear style, flange, port direction and mounting seal before ordering.

🔌 Function

The engine-driven flexible-impeller seawater pump draws raw water through the vessel's intake and strainer, then circulates it through the heat exchanger, charge-air cooler, exhaust mixer and other seawater-cooled components. Adequate flow is essential for controlling engine and exhaust temperatures.

Common signs of failure:

• Engine or exhaust temperature rises above normal

• Weak or absent seawater discharge at the exhaust outlet

• Impeller blades are cracked, missing, swollen or permanently set

• Water leaks from the pump cover, shaft seal, drain hole or mounting flange

• Bearing noise, shaft play or a seized pump drive

📦 Condition

• New aftermarket replacement seawater pump

• Brand new

• Supplied in original or equivalent packaging