Hardin Marine

Mercury Fuel Filter Replacement (RF51)

The RF51 spin-on Fuel Filter utilizes FST’s exclusive FloMax™ low restriction, high efficiency filter media that filters down to 4 microns, and strips 99% free water.

• 100% Made in America • Size: O.D.: 11/16” (93.7mm) Height: 3-7/8” (98.4mm)
• Thread: 11/16-16
• Gasket/Seal: (attached) O.D. 2.834(72mm) I.D.: 2.462 (63mm) Thick 0.500 (5mm)
• Flow: 200 gallons per hour
• Filtering Effificiency: 4 Microns: FloMax™ exclusive cellulose (gasoline-methanol-ethanol compatible). Most competitors are in the 10-24 Micron range.
• Water Separation: FST’s exclusive, enhanced cellulose FloMax™ filter media strips/ separates water to a “quiet” zone for water and heavy contaminates to settle. Strips 99% of free water. Not water blocking and does not swell up, which can block the fuel flow.
• Burst: 250 psi

Impeller Rebuild Service Kit - For Gen 4, Gen 5/6, Rev. 1 Hardin Stainless Pumps - Mercury Replacement

This impeller kit is a rebuild service kit for the Hardin Marine stainless impeller housing 625-4178 and stainless pumps 625-4110 and 625-4118 . This kit comes with new wear plates , O-rings, and impeller. Rev. 1 Version for pumps manufactured up to 12/2012.

Which Rebuild kit do I need?

Rev. 1 pumps have a 1/8" drain plug in the rear housing and a slotted front wear plate.
Rev. 2 pumps have no drain plug and a solid front wear plate.

Mercury

This impeller kit is a rebuild service kit for the Hardin Marine stainless impeller housing 625-4178 . 

• (1)Impeller
• (2) Wear Plate
• O-rings

See here for individual replacement parts.

Mercury Outboard Adapter

Mercury Outboard Kit (1965-date), Mercury Stern Drive Kit (all) Use with two 3300 cables. Allows quick installation and maximum adjustment at engine. Package includes throttle and shift adapters for one engine. Individually packaged. Adapts universal 3300/33C style 10-32 thread cables for use with Mercruiser I/O engines and Mercury outboards. Each kit connects 2 cables (shift and throttle) to 1 engine.

Mercury Racing 525 EFI, 600/662/700 SCI Series V8,  0.030" MLS Exhaust Gasket - Sold in Pairs

These gaskets are 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.

These MLS exhaust gaskets are ideal for both aluminum heads & cast iron heads as well as cast iron and aluminum blocks. The composition of MLS gaskets will also withstand the shearing forces created by aluminum heads on cast iron blocks. No re-torque is required and by design promotes an even torque load across the sealing surface.

Sold in Pairs

Mercury Racing 700 Intercooler Hi-Flow Fitting Kit

This fitting kit replaces the stock fittings with larger higher flow fittings allowing better cooling performance. Fittings are -10 AN.

Mercury Racing Fuel Filter Element (Replacement #35-8M0000202 or (RF500M)

The FST Performance RF500M fits the OEM Mercury racing filter head as well as the Hardin Marine Billet fuel / water separator head #625-7667. This filter removes contaminates down to as small as 3 Microns while separating water. With a flow rate of 5GPM and up to 300 GPH flow with less than 1% pressure drop at 75psi through 579 sq.in. of filter material.

Measurements: 6-1/2" tall and 3-5/8" wide. Thread size is 1"-14 

Mercury Sterndrive Cable Adapter

Adapts 33C / 3300 style cables for use with Mercury Engines.

Trim Sender Actuator for Mercury Verado applications.

• Material: MLS
• Compressed Thickness: .051
• Port Shape: Rectangular
• Port Size: 2.505x1.850

Sold in Pairs

Modular Terminal Block End Caps 5 Pack

Use with modular terminal blocks sold separately to complete your terminal block.

Modular Terminal Block Removal Tool

Use this tool to separate Modular Terminal Block sections.

Modular Terminal Blocks 5 Pack

These 30 Amp rated marine grade terminal blocks offer secure connections of the vital instrument wiring in your boat. Their modular nature allows you to build a terminal block of any size you need. Use with modular end caps sold separately to complete your terminal block.

This is a Momentary Trim Switch that will replace worn out switches on Early Hardin, Gaffrig and Livorsi controls.

• Fits Momo 6-Bolt Steering Wheels (All 6-bolt Wheels we sell are Momo)
• 3-1/2" Diameter 
• 3/8" Height
• Polished Billet Aluminum
• Includes 6 bolts for mounting 
• Can be used with most steering wheel adapters 
• Designed to be used with Hardin Marine One-Piece Adapters (see related items)

This module changes the direction of the motor, and dynamic breaking stops the motor when the switch returns to “OFF”. The low profile is perfect for tighter spaces and the hardware is completely corrosive resistant. It’s ideal for tarp or lift applications, as well as for hoists, hatches, winches, slowpows, intake/exhaust fans, vehicle outriggers, and other reversing applications.

Mounting Plate for 151-1200 Trim Switch

Plate and 4 screws for mounting a 151-1200 Trim Switch to most steering wheels.

MSD Bracket, Ford Front Cover Mount

• Ultimate in a clean and functional installation.
• Designed to sandwich between an MSD 6M, Max Volt MV-D6 or a Daytona Sensors CD-1 Control Box.
• Satin Finished Stainless Steel.
• Will mount on a 460 Ford Cylinder Head

N-Control Foot Trim Replacement Switch

This switch will replace old or worn out switches in N-Control foot trim controls.

Side Mount Shifter

Looking for the ultimate single lever gunwale mount control This precision, ergonomically designed control not only is a work of art to look at, it has a great positive locking feel in your hand. Uses a 33C cable for operation.

• This is a Shifter only and is designed for use in conjunction with a foot throttle assembly

Neutral Safety Switch - Shifter, 20 Amp

For use on Hardin Marine Offshore and Stiletto controls. Also used on 620-60313 bracket.

New Mini High Torque Ford 460 Starter - Top Mount

After years of only having rebuilt starters available we are excited to at last offer a truly modern high torque, gear reduction style starter for the once Iconic Ford 460 Pack-a-jet engine applications. The compact body of this unit delivers more cranking power than a OEM starter could ever dream of.

USCG Approved (SAE J1171)

This starter mounts on the top of your 460 ford engines Bell Housing and is a reverse rotation starter, so it can start your standard rotation engine. (* Bell Housing not included)

*FITMENT CAUTION-- Designed for Top mounted starter bellhousing's with a 5-1/4" mounting bolt center to center spacing . This starter requires a 4-1/16" opening. **NOTE** For proper starter engagement installer MUST CONFIRM the distance from the bellhousing's starter mounting flange to the engines flyweel/Flexplate face of the ring gear teeth is 18MM or 11/16*

New Super Duty Gear Reduction Starter For MerCruiser & OMC ClockwiseRotation

Fits 4 & 6 cylinder engines with standard (10mt) solenoid.

BRAND NEW STARTERS - ALL UNITS MEET OR EXCEED OEM SPECIFICATIONS

O2 Spacer, For Common Log Style Exhaust manifolds

This Unique 1" thick adapter plate provides an installation option for retro fitting a Oxygen sensor and or air fuel ratio gauge for tuning purposes Into the most common Log Manifold style exhaust systems. The part is manufactured from Aluminum and is not treated with any corrosion resistance. Designed to accept popular 18MM O2 Oxygen sensors.

TECH NOTE: Will O2 Sensors Work In marine exhaust systems?

YES FOR TUNING but they have limitations as water / moisture is a byproduct of combustion. Often boaters find there is moisture in their exhaust system that have collected or made their way inside of what is better known as the "DRY" exhaust stream of their exhaust system. Anything from steam like to little water droplets about 1/32" all around the inside of the exhaust. This is because water IS a by product of combustion. same thing you see on a cold morning behind cars. sometimes you see water dripping out.

Don't take our word for it ask a real rocket scientist: https://www.grc.nasa.gov/www/k-12/airplane/combst1.html

This is why O2 Sensors are great for tuning but have a limited long term life span unless protected by Catalytic converters like on New Marine engine offerings. So you know gas is known as a hydrocarbon based fuel. And we all know what hydro means WATER.

• For Log Manifolds 
• 5" Outside Diameter 
• 3" Inside Diameter 
• 1" Thick
• 18MM O2 hole
• 2-15/16" Bolt Hole to Bolt Hole (Adjacent)
• 4-1/8" Bolt Hole to Bolt Hole (Across)
• Mounting Hardware is NOT INCLUDED
• Riser Gaskets sold separately (500-718) 2 Required
• Stainless Steel 18MM Oxygen Sensor Plug sold separately (620-50031) 1 Required
• Sold Each