Hardin Marine

This beautifully polished CNC crafted billet aluminum Fuel/Water separator filter mount is the perfect solution for modern Mercury outboard engines. This unit features 1/2"NPT inlet/outlet ports on either side for convenient fuel system plumbing and return. Sturdy one piece billet construction allows easy remote mounting of OEM filters and the popular aftermarket FST #692-33408 fuel/water separator filters. Hose and fittings not included.

• Ideal for Marine fuel/water Separator applications 
• CNC-machined from billet 6061-T6 aluminum 
• High-Flow Design 
• 11/16"-16 Thread 
• 1/2" NPT Inlet/Outlet ports 
• Accepts standard Mercury and Aftermarket RF51 Type #692-33408

This beautifully black anodized CNC crafted billet aluminum Fuel/Water separator filter kit is the perfect solution for modern Mercury outboard engines. This unit features 1/2"NPT inlet/outlet ports on either side for convenient fuel system plumbing and return. Sturdy one piece billet construction allows easy remote mounting of OEM filters and the popular aftermarket FST #692-33408 fuel/water separator filters. This kit includes a 692-33408 filter. Hose and fittings not included.

• Ideal for Marine fuel/water Separator applications 
• CNC-machined from billet 6061-T6 aluminum 
• High-Flow Design 
• 11/16"-16 Thread 
• 1/2" NPT Inlet/Outlet ports 
• Kit Includes FST Filter RF51 Type #692-33408

This beautifully polished CNC crafted billet aluminum Fuel/Water separator filter kit is the perfect solution for modern Mercury outboard engines. This unit features 1/2"NPT inlet/outlet ports on either side for convenient fuel system plumbing and return. Sturdy one piece billet construction allows easy remote mounting of OEM filters and the popular aftermarket FST #692-33408 fuel/water separator filters. This kit includes a 692-33408 filter. Hose and fittings not included.

• Ideal for Marine fuel/water Separator applications 
• CNC-machined from billet 6061-T6 aluminum 
• High-Flow Design 
• 11/16"-16 Thread 
• 1/2" NPT Inlet/Outlet ports 
• Kit Includes FST Filter RF51 Type #692-33408

Have you made some performance modifications and you're now making mega horsepower only to find out your stock Mercury cooler can't keep up? Well not only is this our most popular combination cooler, it is also the answer to getting those oil temperatures back down where they belong. This cooler features seventy-six 1/4" seamless cooling tubes and can handle form 450 to 750 horsepower applications with ease. With a 23" overall length, 3/4" NPT oil connections, 3/8" NPT P/S connections, and 1" NPT water connections, this is the perfect solution.

Hi-Performance Engine Oil Cooler, 3" Diameter, 16" Overall Length, 3/4" NPT Oil Connections, 1" NPT Water Connection

Designed for engines making 450 to 750 horsepower.  These units have seventy-six 1/4" seamless tubes - over double that of a 2" cooler.  The cooler incorporates cast end caps, NO cheap press-formed caps are used.  Operating pressure up to 150 PSI.  This is the cooler all others try to imitate but can never duplicate.  Compare features and you will demand Hardin Marine oil coolers.

Dimensions:
• Overall Length: 20-1/2"
• Tube Length: 16-1/2"
• Diameter: 3"
• Oil Connection: 3/4" NPT
• Water Connection: 1" NPT
• Drain: 1/8" NPT

High performance oil cooler designed for engines 450 to 750 horsepower. These units have seventy-six 1/4" seamless tubes and operate at 150 psi.

Stronger. Faster. Better.

Hardin HMMA2 series linear hatch actuator / hatch lift / hatch ram is the proven choice for applications requiring a durable, long life solution. Specifically designed for harsh working environments, the HMMA2 linear actuator is ideal for use in heavy-duty Marine installations .  This linear actuator has been certified for applications requiring IP66D compliance and USCG approval. Its IP66D protection  ensures it will withstand high temperature, high pressure water jets and the ingress of dust and other solid contaminants. This has also passed the 500 hour salt spray test . The HMMA2 linear actuator is DC power and a ball screw design. Features load limiting clutch or limit switches. Improved speed and torque over Acme screw designs. We are stocking three lengths 10,16 and 22" for more information view our installation instructions.

• These are a replacement for 12" stroke Dana-Warner, Thomson, Livorsi brand 
• Actual ram travel stroke is 10.39" 
• Travels 1.5" per second under load, almost twice as fast as competing brands
• Spindle type "Ball Screw" is more efficient and will lift more weight than lead screw designs
• Voltage: 12v DC
• Functions for Limit switches at full retracted/extended positions to cut current to prevent damage
• Overload clutch Standard on all models
  
• IP rating - IP66D
• UL73, EMC Certificate
• USCG approved
• Tinned Leads
• Safe working dynamic load limit of 550 lbs.*
• Billet black anodized extrusion shaft housing

*Static loading refers to the load on an actuator when it is in a fixed or stationary condition. The static load capacity of an actuator refers to how much weight the actuator can safely hold without back driving or causing damage. Dynamic load is the load the actuator sees when it is powered and extending or retracting. The dynamic load capacity of an actuator refers to how much the actuator can push or pull. Placing an actuator closer to the hatch hinge point will require the actuator to work harder than installing it further out.

Stronger. Faster. Better.

Hardin HMMA2 series linear hatch actuator / hatch lift / hatch ram is the proven choice for applications requiring a durable, long life solution. Specifically designed for harsh working environments, the HMMA2 linear actuator is ideal for use in heavy-duty Marine installations .  This linear actuator has been certified for applications requiring IP66D compliance and USCG approval. Its IP66D protection  ensures it will withstand high temperature, high pressure water jets and the ingress of dust and other solid contaminants. This has also passed the 500 hour salt spray test . The HMMA2 linear actuator is DC power and a ball screw design. Features load limiting clutch or limit switches. Improved speed and torque over Acme screw designs. We are stocking three replacement lengths 10,16 and 22" for more information view our installation instructions.

• These are a replacement for 18" stroke Dana-Warner, Thomson, Livorsi brand 
• Actual ram travel stroke is 16.38"
• Travels 1.5" per second under load, almost twice as fast as competing brands
• Spindle type "Ball Screw"
• Voltage: 12v DC
• Functions for Limit switches at full retracted/extended positions to cut current to prevent damage
• Overload clutch Standard on all models
  
• IP rating - IP66D
• UL73, EMC Certificate
• USCG approved
• Tinned Leads
• Safe working dynamic load limit of 550 lbs.*
• Billet black anodized extrusion shaft housing

*Static loading refers to the load on an actuator when it is in a fixed or stationary condition. The static load capacity of an actuator refers to how much weight the actuator can safely hold without back driving or causing damage. Dynamic load is the load the actuator sees when it is powered and extending or retracting. The dynamic load capacity of an actuator refers to how much the actuator can push or pull. Placing an actuator closer to the hatch hinge point will require the actuator to work harder than installing it further out.

Stronger. Faster. Better.

Hardin HMMA2 series linear hatch actuator / hatch lift / hatch ram is the proven choice for applications requiring a durable, long life solution. Specifically designed for harsh working environments, the HMMA2 linear actuator is ideal for use in heavy-duty Marine installations .  This linear actuator has been certified for applications requiring IP66D compliance and USCG approval. Its IP66D protection  ensures it will withstand high temperature, high pressure water jets and the ingress of dust and other solid contaminants. This has also passed the 500 hour salt spray test . The HMMA2 linear actuator is DC power and a ball screw design. Features load limiting clutch or limit switches. Improved speed and torque over Acme screw designs. We are stocking three replacement lengths 10,16 and 22" for more information view our installation instructions.

• These are a replacement for 24" stroke Dana-Warner, Thomson, Livorsi brand 
• Actual ram travel stroke is 22.4" 
• Travels 1.5" per second under load, almost twice as fast as competing brands
• Spindle type "Ball Screw" is more efficient and will lift more weight than lead screw designs
• Voltage: 12v DC
• Functions for Limit switches at full retracted/extended positions to cut current to prevent damage
• Overload clutch Standard on all models
  
• IP rating - IP66D
• UL73, EMC Certificate
• USCG approved
• Tinned Leads
• Safe working dynamic load limit of 550 lbs.*
• Billet black anodized extrusion shaft housing

*Static loading refers to the load on an actuator when it is in a fixed or stationary condition. The static load capacity of an actuator refers to how much weight the actuator can safely hold without back driving or causing damage. Dynamic load is the load the actuator sees when it is powered and extending or retracting. The dynamic load capacity of an actuator refers to how much the actuator can push or pull. Placing an actuator closer to the hatch hinge point will require the actuator to work harder than installing it further out.

Horizontal Head Mount Bracket - Black

These ​6061T6 Billet filter head brackets are commonly used when converting from remote mount filter assemblies to vertical head mount versions.
  This unit features a lifting eye and is supplied with mounting hardware and spacers.​

Horizontal Head Mount Bracket - Polished

These ​6061T6 Billet filter head brackets are commonly used when converting from remote mount filter assemblies to vertical head mount versions.
  This unit features a lifting eye and is supplied with mounting hardware and spacers.​

Hose Kit For Exhaust Diverters

This kit is used to connect your exhaust diverters to your exhaust tips.  The kit consists of 2 pieces of pre-cut 8" exhaust hose and 4 stainless steel hose clamps For twin engine installations order 2 kits.

OMC & Mercury Cable Use

This foot throttle has been famous among the bass boaters for years but now it's popularity has spread into stern drives, jets, and V-drives. The pedal assembly features a toe-clip giving the driver an extra sense of control. Each throttle assembly is specific to its combination. It can be used with a popular 33 series style cable but the adapter will need to be purchased separately.

Housing snap ring for Gen 7 Plus Sea Pump

Sea Pump Snout Housing - For Gen. 5/6 Hardin Stainless Pumps - Mercury Replacement

This Sea Pump Snout Housing is for the Hardin Marine stainless pump 625-4118.

HP 500/525 Flow Command Fuel Pressure Regulator (Red Color)

Hardin Marine just introduced the MerCruiser HP500 Systems application to its line of high performance Flow Command adjustable fuel flow modifiers. The billet aluminum Flow Command is designed specifically for stock or modified HP500 systems. The Flow Command allows modification of the fuel flow rate to properly tune the air flow ratio. Ideal for use with high flow exhausts and intakes, the Flow Command incorporates these exclusive features:

• Bolt-on adjustable modifier for stock fuel regulators
• 6061-T billet aluminum case, CNC machined
• Allows pressure adjustments from 25 to 65 PSI
• Machined to exacting tolerances

HP 500 Style Intake/Carburetor Power Package with Machine Polished Intake - Rectangular Port
(Satin Intake Pictured)

If you're looking to build an HP 500 style motor but are not sure of exactly which parts you may need, then this kit is for you. Nothing could be easier.

We have combined all the necessary items to produce an HP 500 style package in kit form.  This kit includes:

• (1) 620-53030 Hardin Marine Big Block Chevy Intake Manifold
• (1) 718-750 Quick Fuel 750 CFM Marine Carburetor
• (1) 620-52001 Intake Allen Bolt Kit
• (1) 620-53106 Carburetor Stud Kit
• (1) 300-17342 Extreme Seal Intake Gasket Kit
• (1) 620-04112 Water Outlet Gasket

The height from the base of the intake manifold to the flame arrestor mounting is 9-1/2".

HP 500 Style Intake/Carburetor Power Package with Satin Intake - Oval Port

If you're looking to build an HP 500 style motor but are not sure of exactly which parts you may need, then this kit is for you. Nothing could be easier.

We have combined all the necessary items to produce an HP 500 style package in kit form.  This kit includes:

• (1) 620-53025 Hardin Marine Big Block Chevy Intake Manifold
• (1) 718-750 Quick Fuel 750 CFM Marine Carburetor
• (1) 620-52001 Intake Allen Bolt Kit
• (1) 620-53106 Carburetor Stud Kit
• (1) 300-17340 Extreme Seal Intake Gasket Kit
• (1) 620-04112 Water Outlet Gasket

The height from the base of the intake manifold to the flame arrestor mounting is 9-1/2".

HP 500 Style Intake/Carburetor Power Package with Satin Intake - Rectangular Port

If you're looking to build an HP 500 style motor but are not sure of exactly which parts you may need, then this kit is for you. Nothing could be easier.

We have combined all the necessary items to produce an HP 500 style package in kit form.  This kit includes:

• (1) 620-53031 Hardin Marine Big Block Chevy Intake Manifold
• (1) 718-750 Quick Fuel 750CFM Marine Carburetor
• (1) 620-52001 Intake Allen Bolt Kit
• (1) 620-53106 Carburetor Stud Kit
• (1) 300-17342 Extreme Seal Intake Gasket Kit
• (1) 620-04112 Water Outlet Gasket

The height from the base of the intake manifold to the flame arrestor mounting is 9-1/2".

Dimensions:
• Overall Length: 25"
• Tube Length: 21"
• Diameter: 3"
• Oil Connection: 3/4" NPT
• Water Connection: 1" NPT
• Drain: 9/16" NPT

High performance oil cooler designed for engines making 550 HP to 1000 HP. These units have seventy-six 1/4" seamless tubes and operate at 150 psi.

HP4 Oil Filter Screen

These high flow stainless steel oil filter screens were designed to provide fast easy access engine oiling system inspection. Each high quality stainless steel screen sandwiches between the engine oil filter and filter head. Simply spin off your oil filter provides easy access to the filter screen.

• Constructed of 316L Stainless steel and billet aluminum water crossover.
• Allows for the removal of the factory power robbing circulating pump.
• Offers an optional cooling system bypass port as well as a single inlet.
• Fits HP500 only
• Includes pulley for HP500 Mercury engines. Use 625-4452 if you already have pulley
• O-ring sealed, no gaskets required.
• Includes mounting bolts.
• Multiple plumbing options from three 1" NPT ports.
• Includes one 1" NPT x 1-1/4" Hose fitting and two 1" NPT pipe plugs.

HP500 Custom Dimension Tailpipe - Polished

This is the same tailpipe MerCruiser® used on the popular HP500 engine package.  It's unique design requires additional hatch clearance in some applications.  Consult for information regarding correct fit.  Sold in pairs

Additional Information:

• Standard Alpha/Bravo Exhaust Hole Locations
• Custom Measurement Instructions

Priced according to your dimensions.  Submit your custom measurements for a price quote.

HP500 EFI Risers, CMI Flange Pair

HP500 / Hardin Drive Kit Serpentine Pulley 6-Rib (Needs Mandrel to Mount)

All Hardin Marine Sea pump pulleys for Gen 4 & 5 v-groove bolt use a mandrel on the pump, then the pulley bolts to the mandrel. Some manufacturers sell you a press-on pulley, these usually work themselves off. This pulley is for HP500 engines, and Hardin Marine Drive Kits only.

Note:  Mandrel Sold Separately.

HP500 Standard Dimension Tailpipe - Polished

This is the same tailpipe MerCruiser® used on the popular HP500 engine package. It's unique design requires additional hatch clearance in some applications. Consult for information regarding correct fit.

• Height from flange to top is 8.25".

Additional Information:

• Standard Alpha/Bravo Exhaust Hole Locations
• Custom Measurement Instructions

Hub, Xover P/S Pump-Pulley

Power steering pump mandrel. Fits late model power steering pumps with plastic reservoir, and krc style pumps, both with a 0.669" diameter shaft.