Multi-Stage Water Pumps - Inlet-Outlet Adapters

1" NPT Inlet/Outlet Sea Pump Adapter
Your Price:
$31.99

1" NPT Inlet/Outlet Sea Pump Adapter

625-4150

1" NPT Inlet/Outlet Sea Pump Adapter

These components are designed to assist in the plumbing of your engine when using the Hardin Marine Multi-Stage sea pumps. A wide range of configurations can be created by using different inlet and outlet adapters.


1-1/4" NPT Dual Common Front Inlet/Outlet Sea Pump Adapter
Your Price:
$375.00

1-1/4" NPT Dual Common Front Inlet/Outlet Sea Pump Adapter

625-4165

1-1/4" NPT Dual Common Front Inlet/Outlet Sea Pump Adapter

These custom fabricated two stage water inlets are an option to solving limited clearance bottom inlet restrictions. These are only available for two stage pumps with bracket spacing between the bodies. These parts are cast and fabricated from 316 stainless steel. The inlet features a 1-1/4”NPT female water inlet.


1-1/4" NPT Dual Common Inlet/Outlet Sea Pump Adapter
Your Price:
$199.99

1-1/4" NPT Dual Common Inlet/Outlet Sea Pump Adapter

625-4161

1-1/4" NPT Dual Common Inlet/Outlet Sea Pump Adapter

These new Dual Stage radiused inlet/outlets provide the answer at last to a equal distribution sea pump that until now has never been available from a machined square block. These water inlet manifold.are cast and polished from 316L Stainless steel featuring equal length and size inlet tubes for equal distribution provided by the massive 1-1/4"npt inlet.  Equal distribution to each chamber has long been a challenge that until now with modern precision flow technology and data acquisition monitoring was unavailable.Careful engineering was put into the design of both  the vacuum and pressure fed characteristics, The design and configuration of the inlet allows tighter easier access and plumbing. This inlet is unmatched by anything available today in modern marine cooling systems.


1-1/4" NPT Dual Common Straight Inlet/Outlet Sea Pump Adapter
Your Price:
$279.99

1-1/4" NPT Dual Common Straight Inlet/Outlet Sea Pump Adapter

625-4088

1-1/4" NPT Dual Common Straight Inlet/Outlet Sea Pump Adapter

    Features Include:
  • Dual water inlet/outlet manifold is manufactured from 316L polished Stainless steel.
  • Equal length size inlet tubes for equal distribution provided by the massive 1-1/4" NPT Inlet.
  • This unit measures 3-1/8" tall from mounting flange to the end

Equal distribution to each chamber has long been a challenge that until now with modern precision flow technology and data acquisition monitoring was unavailable. Careful engineering was put into the design of both the vacuum and pressure fed characteristics. The design and configuration of the inlet allows tighter easier access and plumbing. Designed for use on a 2 stage pump or 3 stage with a bracket or spacer between the bodies.


1-1/4" NPT Triple Common Inlet/Outlet Sea Pump Adapter
Your Price:
$375.99

1-1/4" NPT Triple Common Inlet/Outlet Sea Pump Adapter

625-4160

1-1/4" NPT Triple Common Inlet/Outlet Sea Pump Adapter

  • 316L Stainless Steel
  • 1-1/4" NPT

At last modern technology has allowed us to again advance from a square block to an actual tuned water inlet manifold. These new cast and polished 316L Stainless Steel inlets feature staggered length and size high flow radiused inlet tubes that provide the ultimate in equal distribution provided by the massive 1-1/4"npt connection. Equal distribution to each chamber has long been a challenge that until now with modern precision flow technology and data acquisition monitoring was unavailable. Careful engineering was put into the design of both  the vacuum and pressure fed characteristics, The design and configuration of the inlet allows a easy access. The inlet is tucked in tight to allow for added clearance on many applications such as Catamaran style boats.these inlets are unmatched by anything available today in modern marine cooling system. These components are designed to assist in the plumbing of your engine when using the Hardin Marine Multi-Stage sea pumps. A wide range of configurations can be created by using different inlet and outlet adapters.


Dual 3/4" NPT Inlet/Outlet Sea Pump Adapter For Intercooler Applications
Your Price:
$79.99

Dual 3/4" NPT Inlet/Outlet Sea Pump Adapter

625-4157

Dual 3/4" NPT Inlet/Outlet Sea Pump Adapter For Intercooler Applications

These components are designed to assist in the plumbing of your engine when using the Hardin Marine Multi-Stage sea pumps. A wide range of configurations can be created by using different inlet and outlet adapters. All of these components are hard anodized to resist harsh corrosive environments.


Front inlet only w/spacer
Your Price:
$389.99

Front inlet only w/spacer

625-4155

Front inlet only w/ Spacer


Mercury 1075 Two Stage -16 ORB Dual Common Inlet/Outlet Sea Pump Adapter
Your Price:
$259.99

Mercury 1075 Two Stage -16 ORB Dual Common Inlet/Outlet Sea Pump Adapter

625-4159

Mercury 1075 Two Stage -16 ORB Dual Common Inlet/Outlet Sea Pump Adapter - Replaces Mercury #842625

These components are designed to assist in the plumbing of your engine when using the Hardin Marine Multi-Stage sea pumps. A wide range of configurations can be created by using different inlet and outlet adapters. All of these components are polished stainless steel or hard anodized to resist harsh corrosive environments. Replaces Mercury OEM # 842625


Three Stage 1-1/4 Common Inlet
Your Price:
$179.99

Rear Inlet /Outlet

625-4154

Rear Inlet /Outlet

These components are designed to assist in the plumbing of your engine when using the Hardin Marine Multi-Stage sea pumps. A wide range of configurations can be created by using different inlet and outlet adapters. All of these components are polished stainless steel or hard anodized to resist harsh corrosive environments.


Triple Stage Dual Bottom Outlet for Hardin Sea Pumps
Your Price:
$699.99

Triple Stage Dual Bottom Outlet for Hardin Sea Pumps

625-4285

  • Dual 1-1/4" NPT Outlet Ports
  • Black Anodized
  • Bottom Outlets

Two Stage 1-1/4 Common Inlet
Your Price:
$159.99

Two Stage 1-1/4 Common Inlet

625-4151

These components are designed to assist in the plumbing of your engine when using the Hardin Marine Multi-Stage sea pumps. A wide range of configurations can be created by using different inlet and outlet adapters. All of these components are polished stainless steel or hard anodized to resist harsh corrosive environments.


1-1/4" Common Inlet Blocks - Dual Stage Inlet for 3 Stage Rear Entry Sea Pump
Your Price:
$159.99

Dual Stage Inlet for 3 Stage Rear Entry Sea Pump

625-4158

1-1/4" Common Inlet Blocks - Dual Stage Inlet for use 3 Stage Rear Entry Sea Pumps