Hardin Marine

50 Amp Mercury Style Circuit Breaker

These breakers are the most common marine units used on factory style as well as aftermarket marine engines and harnesses. Be careful not to exceed the original amperage rating of your existing harness.

500 Gallon Per Hour Bilge Pump

These Bilge Pumps are made in America, and are of top quality These pumps meet all necessary USCG requirements and are tested and specified by over 200 boat manufacturers.

500 GPH Cartridge Bilge Pump

Bilge pump cleaning and maintenance no longer call for complete disassembly. You can now leave the pump casing attached to both the boat and the hoses – assuming you own one of SPX Johnson Pump’s cartridge bilge pumps. Cartridge bilge pumps from SPX Johnson Pump can be removed for cleaning or replacement without the use of a single tool. Lift a tab on the top, give the cartridge a twist and pull it out; that’s all there is to it. The cartridge contains an all-in-one motor/impeller unit with no loose parts. The cartridge line is a further development of SPX Johnson Pump’s acclaimed bilge pumps, which have received highest ratings in many different independent tests over the years.

Features & Benefits
• All-in one motor/impeller unit
• No tools needed for maintenance
• Extremely energy efficient
• Water cooled motor for long service life
• Five models for fifferent capacity needs
• Can be equipped with a float switch for automatic operation
• Meets the strict international standard, ISO 8849 Marine
• Made in the USA

Water Cooled For Extended Service
The cartridge pumps are manufactured in the United States and the new line encompasses five compact pumps, each for a different capacity need. All of them use remarkably little electricity for the amount of water they pump. Their improved, more efficient motors also provide increased service life, thanks in part to an ingenious solution which circulates the discharge water around the motor for cooling.

The construction of these tiltable, race inspired stainless steel and billet aluminum helms feature an adjustable slip collar to accommodate different dash thicknesses while providing the ultimate in finished appearance. These steering posts bolt directly to a Char-Lynn hydraulic helm. This special model includes a bluetooth paddle trim system. Available in a dual steering wheel bolt pattern (Momo or Dino). Length is from the dash to the steering wheel mounting flange based on a 1" thick dash. Center steering wheel cover sold separately. All Stainless Steel helm assembly.

The construction of these tiltable, race inspired stainless steel and billet aluminum helms feature an adjustable slip collar to accommodate different dash thicknesses while providing the ultimate in finished appearance. These steering posts bolt directly to a Dan Foss hydraulic helm. This special model includes a bluetooth paddle trim system. Available in a dual steering wheel bolt pattern (Momo or Dino). Length is from the dash to the steering wheel mounting flange based on a 1" thick dash. Center steering wheel cover sold separately. All Stainless Steel helm assembly.

525 / 600SCI / 700SCI Mercury Replacement Header Gasket - Sold in Pairs

These gaskets are Graphite Impregnated designed to withstand the highest of temperatures on high horsepower applications. For those of you looking to do the job only once insist on Hardin Marine extreme-duty gaskets. Quite possibly the last gasket you’ll ever need.

Sold in Pairs

Seaward Standard Risers - Sold As A Pair

525 Seaward Tall Risers - Polished

5-3/4" Hide-A-Helm Steering Wheel Adapter

If you've been fortunate enough to see inside some of the most elite powerboats in the world toady such as Nor-Tec and Outerlimits, then you've probably noticed the ultra-cool dual switachble hidden helms they have.  Hardin Marine developed this system with two thoughts in mind.  First, dual helm steering systems up to now used two mounted steering posts fixed to both sides of the dash.  When one wasn't being used it stuck out of the dash as a safety hazard similar to a human harpoon.  By relocating the steering post beneath the surface of the dash and covering it with a smooth billet cap you now have a part that is worthy of existence on a million dollar boat.  Secondly, the easy removal of the steering wheel allows it to be stowed and locked beneath the cabin.  No steering wheel, means less chance of your boat being stolen.

5-3/4" OD x 1-5/8" Tall Flame Arrestor, Aluminum

This low profile USCG Approved flame arrestor is designed to fit all carburetors with a 5-1/8" air horn or neck. This unit has a 5-3/ 4" outside diameter and is 1-5/8" tall. This unit is constructed of aluminum and is not recommended for saltwater applications. This flame arrestor fits only the Quadrajet and Edelbrock 4bbl. carburetors it does not clear the Holley or Quickfuel J-tubes.

5-3/4" x 3" High Flame Arrestor, Aluminum (will fit inside std. scoops)

These flame arrestors both feature an aluminum mesh style USCG Approved construction Each unit is designed to fit a standard 5-1/8" carburetor neck while their outside dimension is 5-3/4". The 3" tall version has no fuel fume vent and fits perfectly inside most aluminum scoops. While the other version is 4" tall and has a fuel fume vent provision.

5-3/4" x 4" High Flame Arrestor with Vent Tube, Aluminum

• Each unit is designed to fit a standard 5-1/8" carburetor neck
• outside dimension is 5-3/4"
• The 4" tall and has a fuel fume vent provision
• Outer Vent Tube Diameter: 1/4"

These flame arrestors both feature an aluminum mesh style USCG Approved construction Each unit is designed to fit a standard 5-1/8" carburetor neck while their outside dimension is 5-3/4" and is 4" tall and has a fuel fume vent provision. Outer Diameter on the vent tube is 1/4" to match the fuel pumps its designed to attach to.

5-Bolt Grant Style Billet Aluminum Steering Wheel Adapter

• Made from Billet Aluminum and powder-coated
• Adapter is 3-3/8" in Diameter and 1" Tall
• Designed to fit the 5-bolt Grant steering wheels with either the Momo or Dino Bolt pattern
• Features a 3-bolt mounting flange and 5-bolt steering wheel mount
• Each adapter includes a billet center cap which fits 2-1/8" cap hole
• Each adapter is supplied with stainless steel hardware

Need help installing your new adapter? Check out this handy tutorial!

See what each of our powder-coated finishes (both flat and glossy) look like under different lighting here!

6" Stainless Steel Exhaust Flappers (EACH)

Due to the popularity of these Hardin Marine handcrafted beautifully polished stainless steel exhaust flappers they have created the option for larger versions. The flappers feature and O-ring seal to eliminate the possibility of any noise from the flapper during normal operation.  This new flapper represents the ultimate in durability and finishing touch to your boats exhaust system. These units are manufactured from 316L Stainless Steel and a silicon seal  *NOTE they require a minimum of 1-1/2" of exhaust tip for adequate clamping and attachment.  Slicone is rated to 250C. Flapper weighs approx 1.05lb (0.475kg)

These units are SOLD EACH and are custom built and require 2-3 weeks for delivery!

Mayfair By Hardin Marine Helms - 6" Standard Steering Post Assembly

The construction of these race inspired billet aluminum and stainless steel helms feature an adjustable slip collar to accommodate different dash thicknesses while providing the ultimate in finished appearance.  These steering posts bolt directly to a Char-Lynn hydraulic helm.  Available in a dual steering wheel bolt pattern (Momo or Dino) or a conventional 3-bolt pattern.  Length is from the dash to the steering wheel mounting flange based on a 1" thick dash. Center steering wheel cover sold separately.

6-Bolt Billet Aluminum Steering Wheel Adapter - Momo and Dino Pattern

• Made from Billet Aluminum and powder-coated
• Adapter is 3-1/2" in Diameter and 1" Tall
• Designed to fit the 6-bolt steering wheels with either the Momo or Dino Bolt pattern
• Momo bolt pattern 2-3/4" center to center across
• Dino bolt pattern 2-7/8" center to center across
• Fits Wheels made by Hardin Marine, Grant, Uflex, Livorsi and others
• Features a 3-bolt mounting flange and 6-bolt steering wheel mount
• Each adapter includes a billet center cap which fits 2-1/8" cap hole
• Each adapter is supplied with stainless steel hardware

Need help installing your new adapter? Check out this handy tutorial!

See what each of our powder-coated finishes (both flat and glossy) look like under different lighting here!

6-Rib Serpentine Crankshaft Pulley for Big Block Chevy (Mercury HP500 Engine Spacing), Polished

These are billet crankshaft pulleys that are CNC precision machined from 6061 T-6 billet aluminum. 5-1/2" Diameter, 1-3/4" thick

7" Single Grip Billet Aluminum Grab Handle - Each

Hardin Marine offers this popular grab handle constructed from billet aluminum in both a single hand 5" and 7" versions and a dual hand 10"version. Both handles feature blind tapped holes allowing them to be mounted with no hardware exposed. These handles work great in conjunction with the Hardin Marine billet vents.

*Note- These grab handles are 9" long with 7-5/16" bolt centers

See what each of our powder-coated finishes (both flat and glossy) look like under different lighting here!

7-3/4" Hide-A-Helm Steering Wheel Adapter

If you've been fortunate enough to see inside some of the most elite powerboats in the world toady such as Nor-Tec and Outerlimits, then you've probably noticed the ultra-cool dual switachble hidden helms they have.  Hardin Marine developed this system with two thoughts in mind.  First, dual helm steering systems up to now used two mounted steering posts fixed to both sides of the dash.  When one wasn't being used it stuck out of the dash as a safety hazard similar to a human harpoon.  By relocating the steering post beneath the surface of the dash and covering it with a smooth billet cap you now have a part that is worthy of existence on a million dollar boat.  Secondly, the easy removal of the steering wheel allows it to be stowed and locked beneath the cabin.  No steering wheel, means less chance of your boat being stolen.

750 Gallon Per Hour Pump

These Bilge Pumps are made in America, and are of top quality These pumps meet all necessary USCG requirements and are tested and specified by over 200 boat manufacturers.

750 GPH Cartridge Bilge Pump

Bilge pump cleaning and maintenance no longer call for complete disassembly. You can now leave the pump casing attached to both the boat and the hoses – assuming you own one of SPX Johnson Pump’s cartridge bilge pumps. Cartridge bilge pumps from SPX Johnson Pump can be removed for cleaning or replacement without the use of a single tool. Lift a tab on the top, give the cartridge a twist and pull it out; that’s all there is to it. The cartridge contains an all-in-one motor/impeller unit with no loose parts. The cartridge line is a further development of SPX Johnson Pump’s acclaimed bilge pumps, which have received highest ratings in many different independent tests over the years.

Features & Benefits
• All-in one motor/impeller unit
• No tools needed for maintenance
• Extremely energy efficient
• Water cooled motor for long service life
• Five models for fifferent capacity needs
• Can be equipped with a float switch for automatic operation
• Meets the strict international standard, ISO 8849 Marine
• Made in the USA

Water Cooled For Extended Service
The cartridge pumps are manufactured in the United States and the new line encompasses five compact pumps, each for a different capacity need. All of them use remarkably little electricity for the amount of water they pump. Their improved, more efficient motors also provide increased service life, thanks in part to an ingenious solution which circulates the discharge water around the motor for cooling.

Oil Cooler Cover - 8 Plate Cast Aluminum (356-T6) Oil Cooler Cover, Starboard Side For KE or Mercury Flywheel Housing

These oil cooler covers are required for use when a plate style oil cooler is used with a Mercury Racing flywheel housing. Each cover is hard anodized for corrosion resistance.

All of our bravo box style coolers an d remote style boxed coolers use a replacement gasket part #625-8018

8 Plate Cast Oil Cooler Cover, Port Side for KE or Mercury Flywheel Housing

These oil cooler covers are required for use when a plate style oil cooler is used with a Mercury Racing flywheel housing.  We offer multiple styles in both cast 356-T6 aluminum or 6061-T6 billet aluminum.  Each cover is hard anodized for corrosion resistance.

All of our bravo box style coolers an d remote style boxed coolers use a replacement gasket part #625-8017

8 Plate Stainless Steel Port Oil Cooler With Cast Aluminum Mercury Style Cover Kit

Once again these kits are designed for your ordering convenience. Each kit consists of a single oil cooler, cover plate (choice of stainless or billet aluminum), billet jam nuts, bolts and gaskets. 8 Plate Cooler rated up to 900 HP.

All of our bravo box style coolers and remote style boxed coolers use a replacement gasket part #625-8017

8 Plate Stainless Steel Starboard Oil Cooler With Cast Aluminum Mercury Style Cover Kit

Once again these kits are designed for your ordering convenience. Each kit consists of a single oil cooler, cover plate (choice of stainless or billet aluminum), billet jam nuts, bolts and gaskets. 8 Plate Cooler rated up to 900 HP.

All of our bravo box style coolers an d remote style boxed coolers use a replacement gasket part #625-8018