Hardin Marine

Mayfair By Hardin Marine Helms - 4" Standard Steering Post Assembly

The construction of these race inspired all 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.

• 4" Diameter.
• Constructed of High Quality 316L Stainless Steel.
• 316L Stainless Steel is specially formulated for harsh marine environments with much superior corrosion resistance over standard 304 stainless steel. 
• These tips include flaps.
• These tips accept our popular slip-in silencers on the 4" models.
• These tips will also accept external Salisbury flappers.
• Sold Each.
• Use Gasket or Silicone to seal to Transom.
• Length 8-3/4", Flange to Inside end 5", Flange to Outside end 3-3/4".

4" Straight Cut Part-Time Transom Mounted Silencers

These silencers are 100% stainless steel and are perfect for both stock and slightly modified engines There are no moving parts and they come in a brilliant polished finish These silencers are called part-time because by simply removing one bolt per tip you can remove the slip-in silencers and have straight through exhaust.  Approximately an 8 to 10 decibel reduction is achieved with these silencers installed.

These tips are 8-3/4" long overall, extending out 3-3/4 inches past the transom ring on the outside and 5" on the inside.

Sold in pairs.

4" Tall Aluminum Valve Cover Breather (Each)

• 4" Height
• 3-5/16" Base Length
• 1-7/8" Base Width
• 2-1/8" Bolt Hole center to center.

These breathers are designed to mount to the top of the valve cover with no bolts exposed. Each breather is highly polished.

This hose is used to plumb from your bilge blower to your engine compartment.

Bilge / Vent hose is sold by the foot, i.e add quantity of 6 for 6 ft. of hose.

Hose comes in maximum of 50 feet sections. Please specify if you want sections cut into specific lengths when ordering over 50 feet.

4" XPM525 Performance Clamp-on Mufflers

Hardin Marine has just introduced their latest performance mufflers, the XPM525. These new silencers address the J-2005 SAE test that is now the standard in many states including California. In a recent independent test, these silencers showed a 12.2-decibel noise reduction at idle speed when mounted on the Mercury 525 engine package. This brought the test boat down to 88db passing the stringent California noise ordinance enacted this year. When installed on a test boat equipped with the 496 engine package, the mufflers brought it down to 88db.

The XPM525’s are constructed entirely from 316L stainless steel in order to provide the maximum corrosion resistance available in saltwater applications. These mufflers do not have any moving parts or packing to wear out. The significant sound reduction is accomplished with a 5-inch 2-phase expansion chamber in conjunction with a center sound wave baffle. The unique down-turned design helps to keep spray and carbon residue from accumulating on the boats transom. Heavy-duty external exhaust flappers are included to prevent any chance of water ingestion through the exhaust system.

Installation is simple. The XPM525 muffler system is designed to clamp onto any 4” O.D. tailpipe or exhaust tip using an integral stainless band clamp and a 1/8” set screw for added security. The mufflers are 12-1/2” in overall length.

The meticulous hand polished finish bring these mufflers to a show quality shine making them a beautiful addition to any boat while maintaining their necessary functionality. Sold in pairs.

4" XPM525 Performance Transom Mount Mufflers

Hardin Marine has just introduced their latest performance mufflers, the XPM525. These new silencers address the J-2005 SAE test that is now the standard in many states including California. In a recent independent test, these silencers showed a 12.2-decibel noise reduction at idle speed when mounted on the Mercury 525 engine package. This brought the test boat down to 88db passing the stringent California noise ordinance enacted this year. When installed on a test boat equipped with the 496 engine package, the mufflers brought it down to 88db.

• 316L Stainless Steel
• 6" flange and three bolt pattern
• 4" hose
• 15-1/2” in overall length
• flange to inside: 5-1/2"
• flange to outside: 10"

The XPM525’s are constructed entirely from 316L stainless steel in order to provide the maximum corrosion resistance available in saltwater applications. These mufflers do not have any moving parts or packing to wear out. The significant sound reduction is accomplished with a 5-inch 2-phase expansion chamber in conjunction with a center sound wave baffle. The unique down-turned design helps to keep spray and carbon residue from accumulating on the boats transom. Heavy-duty external exhaust flappers are included to prevent any chance of water ingestion through the exhaust system.

Installation is simple. The Transom mount XPM525 muffler system is designed to mount like standard exhaust tip with it's conventional 6" flange and three bolt pattern. The hose connection if for a 4" hose.The mufflers are 15-1/2” in overall length. 10" Out from flange and 5-1/2"in.

The meticulous hand polished finish bring these mufflers to a show quality shine making them a beautiful addition to any boat while maintaining their necessary functionality. Sold in pairs.

• -10 AN Style Fitting
• Outer Diameter 1-1/8"
• Overall Length 4-5/16"
• Polished Finish.
• Includes nut.

4.0" Offshore Turbulator, Replaces Mercury OEM #816037

Turbulators are designed to keep any condensation or moisture from entering the manifold during the cool down process. This is one of the many unique Hardin features that are helping lead the way in exhaust system technologies. Replaces Mercury #816037. Used with Gil  Style Manifolds and risers.

4.5" Offshore Turbulator

Turbulators are designed to keep any condensation or moisture from entering the manifold during the cool down process This is one of the many unique Hardin features that are helping lead the way in exhaust system technologies.

• 4.5" Diameter.
• Constructed of 316L Stainless Steel.
• These tips do not include internal flaps.
• These tips accept slip-in silencers.
• These tips will also accept external Salisbury flappers.
• Sold Each.
• Use Gasket or Silicone to seal to Transom.

4-1/2" Cyclone "HP" Series Inline Silencer, Polished, Sold In Pairs
For Engines Up To 650 HP (10" Long)

These silencers are designed for the customer seeking a simple "clamp-inline" version of the popular Cyclone silencers. By offering silencers in 3", 3-1/2", 4", and 4-1/2" inlet and outlets and sound expansion chambers of  4", 4-1/2", and 5", these units offer maximum noise reduction while retaining maximum power.

Constructed of all 316L stainless steel for maximum corrosion resistance.

4-1/2" I.D. External Salisbury Flapper

These are excellent American-made flaps that will not curl like cheap import copies. These are a must for boats with a very close distance between exhaust ports and the water line Clamp is included.  Sold each.

This is top quality soft wall exhaust hose It's pliable construction makes it easier to work with than hard wall hose.

All exhaust hose is sold by the inch, i.e add quantity of 24 for 24 in. (2 ft.) of hose.

Hose comes in maximum of 12.5 feet sections. Please specify if you want sections cut into specific lengths when ordering over 12 feet.

4-1/2" Stainless Steel Exhaust Flappers (pair)

If you're like us and can't stand the ugly sight of those black rubber Salisbury style flappers then feast your eyes on this piece.  Hardin Marine has handcrafted these beautifully polished stainless steel exhaust flappers to eliminate that eyesore.  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 finishing touch to your boats exhaust system.  Available in 4", 4-1/2" or 5" sizes.

HCX Competition Series Offshore Mufflers
4-1/4" O.D. x 8"Long  (Pair)

HCX Offshore Competition Race Mufflers Design and Function Faster & Quieter

With decades devoted to marine exhaust technology Hardin Marine knows a HIGH horsepower muffler does not work by restricting flow. There is a balance between noise reduction and horse power retention. The HCX series mufflers tuned free-flow unrestricted design along their with strategically placed louvers reamlines your boats exhaust flow reducing back pressure while also adding a level of sound deadening and providing up to 8 decibels (8" version) of noise reduction and an incomparable deep, rich sound.

In order to offer maximum exhaust flow in its most basic sense and for the muffler to reduce noise, it must separate that noise (sound waves), by separating the peaks and valleys produced by the exhaust note. These sound waves are then absorbed throughout the length of the muffler, the harsh (Loud) noise notes can be some what neutralized through this technology this is exactly how the HCX series muffler achieves this.

These mufflers provide the long awaited option to the numerous 750+ horse powered boats that longed for a muffler option that wouldn’t rob them of their available horse power and that could also be easily installed and removed for various boating environments. The lightweight design is perfect for dry tailpipe applications but they can also be used in wet pipe applications. Common applications are high horsepower, supercharged or normally aspirated engines. Each muffler is precision TIG welded utilizing all stainless steel construction. The mufflers are a standard 8" length with a 4-1/4" O.D. They are easily removable with just 1 hex screw (no special tool needed, just a standard size allen wrench)

• All Stainless Steel Construction
• Strategic louvered design provides noise reduction
• Length 8"
• Perfect for Dry or Wet exhaust systems
• 4-1/4" O.D
• Maximum flow
• Simple single bolt installation
• *Note: Custom made, 2-4 weeks to build. Please Note the inside diameter of your exhaust pipe below.

4150 Tall Aluminum Stealth Dual Air Scoop

This scoop features heavy duty .080 aluminum construction providing durability and strength. Each scoop is welded inside and out to prevent cracking. Then the scoop is polished to a show quality shine that is just incredible. It also features a raised mounting flange providing plenty of clearance for any carburetor. Flame Arrestor 690-573001A is recommended for use with this scoop. Fits carburetors with 5 1/8 neck. Please provide center to center measurements when ordering. 12" Wide at opening. 6-1/2" tall in the middle, 4-1/2" tall on the sides. 28" Long

4150 Tall Aluminum Stealth Single Air Scoop

This scoop features heavy duty .080 aluminum construction providing durability and strength. Each scoop is welded inside and out to prevent cracking. Then the scoop is polished to a show quality shine that is just incredible. It also features a raised mounting flange providing plenty of clearance for any carburetor. Flame Arrestor 690-573001A is recommended for use with this scoop. Fits carburetors with 5 1/8 neck. 12" Wide at opening. 6-1/2" tall in the middle, 4-1/2" tall on the sides. 24" Long.

429-460 Ford Valve Covers

These chrome plated steel valve covers feature a clean no-logo design. These are a great looking addition to any engine package. Not recommended in salt water applications. Sold in pairs.

4300 Cable Clamp Stainless Steel

For use 43c or 43bc cables, which are typically used for forward/reverse and trimmable nozzles on jet boats. Mounting holes are 1" on center.

4300BC Bulkhead Maxflex Extreme

These extremely heavy duty cables are recommended for heavy use and high operating loads The cables use all of our latest technology, from the acetal liner to their high density jacket Even the bulk head versions use an all stainless steel bulkhead and hardware. High Density Jacket Housing is 0.43" (11mm) Diameter. Replaces Morse 38013-000 cables. Used on Berkeley 12JC/G and American Turbine Dominator Jet Drives among others.

Type 43C have 1/4-28 threaded ends. 

4300C Clamp Style Maxflex Extreme

These extremely heavy duty cables are recommended for heavy use and high operating loads The cables use all of our latest technology, from the acetal liner to their high density jacket. High Density Jacket Housing is 0.43" (11mm) Diameter. Replaces Morse 38012-000 cables. Used on Berkeley 12JE/F Jet Drives and in some shifter control applications.

Type 43C have 1/4-28 threaded ends.

We Offer the most complete line of chrome plated brass and custom fabricated stainless steel fittings available anywhere. All of these fittings are sure to simplify your plumbing job and add a tasteful finishing touch.

4500 Dominator Tall Aluminum Stealth Dual Air Scoop

This scoop features heavy duty .080 aluminum construction providing durability and strength. Each scoop is welded inside and out to prevent cracking. Then the scoop is polished to a show quality shine that is just incredible. It also features a raised mounting flange providing plenty of clearance for any carburetor. Fits carburetors with 7 1/4 neck. 13-1/2" Wide at opening. 6-1/2" tall in the middle, 4-1/2" tall on the sides. 28" Long.

This fits 4500 Dominator carbs only and that a center to center measurement is required to make purchase.

4500 Tall Aluminum Stealth Single Air Scoop

This scoop features heavy duty .080 aluminum construction providing durability and strength. Each scoop is welded inside and out to prevent cracking. Then the scoop is polished to a show quality shine that is just incredible. It also features a raised mounting flange providing plenty of clearance for any carburetor. Fits carburetors with 7 1/4 neck. 13-1/2" Wide at opening. 6-1/2" tall in the middle, 4-1/2" tall on the sides. 24" Long.