Hardin Marine

HP500 Circulating Pump Eliminator Crossover Kit
Your Price:
$599.99

454/502 Magnum Circulating Pump Eliminator Crossover Kit

625-4453

  • Constructed of 316L stainless steel and billet aluminum.
  • Offers a optional cooling system bypass port as well as a single inlet.
  • Includes pulley for 454/502 Mag applications.
  • This model ONLY fits 454/502
  • Other models available for popular HP Mercury engines including the 500, 525, 600, and 700's.
  • 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.
  • Allows for the removal of the factory power robbing circulating pump.

455 OLDS TIMING COVER SET
Your Price:
$19.99

455 Olds Timing Cover Set

300-17873

455 Olds Timing Cover Set- Sold Each

Sold Each


460 Ford Cast Aluminum Exhaust System - Manifolds Only
Your Price:
$2,499.99

This Part has options, please click the button below to order.

460 Ford Cast Aluminum Exhaust System - Manifolds Only

620-36001

460 Ford Cast Aluminum Performance Exhaust System - Manifolds Only, (Includes Bolts & Gaskets)

The long awaited and much anticipated new Performance Ford center rise exhaust systems are now available from Hardin Marine. Hardin adapted the same technology used to develop the powerful manifold systems found on Mercury Racing’s HP500 and 540 Bulldog engine packages and integrated that individual separated runner design into this new Big Block Ford exhaust system. Hardin knew while perfect for direct replacement these also compliment today’s larger custom Ford 500 CID plus engines. These engines require an exhaust system that not only scavenges, but can also expel the massive amounts of exhaust created by these larger engines while reducing exhaust back pressure to near non-existent levels. These manifolds are cast from pure T356 aluminum and then heat treated to a T6 condition. The final steps include hard anodizing for corrosion resistance and a gloss powder coated for a stunning appearance. Individual exhaust ports are cooled by a balanced and even water flow thru the manifold. Exhaust tailpipes are available in a standard exit or custom applications and are constructed from quality 316L stainless steel.

  • 35" Overall Width on stock heads.
  • 29-1/2" Exhaust Center to Center on stock heads.
  • 8" Tall from Exhaust center-line to top of manifold on stock heads.
  • 12-3/4" Tall from Exhaust center-line to top of riser on stock heads.
Superseded From: 620-36003

460 Ford Cast Aluminum Exhaust System with Low Port Tailpipes
Your Price:
$3,899.99

This Part has options, please click the button below to order.

460 Ford Cast Aluminum Exhaust System with Low Port Tailpipes

620-36005

460 Ford Cast Aluminum Performance Exhaust System with Below Swim Platform Low Port Tailpipes

The long awaited and much anticipated new Performance Ford center rise exhaust systems are now available from Hardin Marine. Hardin adapted the same technology used to develop the powerful manifold systems found on Mercury Racing’s HP500 and 540 Bulldog engine packages and integrated that individual separated runner design into this new Big Block Ford exhaust system. Hardin knew while perfect for direct replacement these also compliment today’s larger custom Ford 500 CID plus engines. These engines require an exhaust system that not only scavenges, but can also expel the massive amounts of exhaust created by these larger engines while reducing exhaust back pressure to near non-existent levels. These manifolds are cast from pure T356 aluminum and then heat treated to a T6 condition. The final steps include hard anodizing for corrosion resistance and a gloss powder coated for a stunning appearance. Individual exhaust ports are cooled by a balanced and even water flow thru the manifold. Exhaust tailpipes are available in a standard exit or custom applications and are constructed from quality 316L stainless steel.

  • 35" Overall Width on stock heads.
  • 29-1/2" Exhaust Center to Center on stock heads.
  • 8" Tall from Exhaust center-line to top of manifold on stock heads.
  • 12-3/4" Tall from Exhaust center-line to top of riser on stock heads.

460 Ford Cast Aluminum Exhaust System with Standard Wet Offshore Tailpipes
Your Price:
$3,799.99

This Part has options, please click the button below to order.

460 Ford Cast Aluminum Exhaust System with Magnum Choice Wet Offshore Tailpipes

620-36011

460 Ford Cast Aluminum Performance Exhaust System with Magnum Choice Short Wet Offshore Tailpipes

The long awaited and much anticipated new Performance Ford center rise exhaust systems are now available from Hardin Marine. Hardin adapted the same technology used to develop the powerful manifold systems found on Mercury Racing’s HP500 and 540 Bulldog engine packages and integrated that individual separated runner design into this new Big Block Ford exhaust system. Hardin knew while perfect for direct replacement these also compliment today’s larger custom Ford 500 CID plus engines. These engines require an exhaust system that not only scavenges, but can also expel the massive amounts of exhaust created by these larger engines while reducing exhaust back pressure to near non-existent levels. These manifolds are cast from pure T356 aluminum and then heat treated to a T6 condition. The final steps include hard anodizing for corrosion resistance and a gloss powder coated for a stunning appearance. Individual exhaust ports are cooled by a balanced and even water flow thru the manifold. Exhaust tailpipes are available in a standard exit or custom applications and are constructed from quality 316L stainless steel.

  • 35" Overall Width on stock heads.
  • 29-1/2" Exhaust Center to Center on stock heads.
  • 8" Tall from Exhaust center-line to top of manifold on stock heads.
  • 12-3/4" Tall from Exhaust center-line to top of riser on stock heads.

460 Ford Cast Aluminum Exhaust System with Standard Wet Offshore Tailpipes
Your Price:
$3,999.99

This Part has options, please click the button below to order.

460 Ford Cast Aluminum Exhaust System with Standard Wet Offshore Tailpipes

620-36000

460 Ford Cast Aluminum Performance Exhaust System with Standard Wet Offshore Tailpipes

The long awaited and much anticipated new Performance Ford center rise exhaust systems are now available from Hardin Marine. Hardin adapted the same technology used to develop the powerful manifold systems found on Mercury Racing’s HP500 and 540 Bulldog engine packages and integrated that individual separated runner design into this new Big Block Ford exhaust system. Hardin knew while perfect for direct replacement these also compliment today’s larger custom Ford 500 CID plus engines. These engines require an exhaust system that not only scavenges, but can also expel the massive amounts of exhaust created by these larger engines while reducing exhaust back pressure to near non-existent levels. These manifolds are cast from pure T356 aluminum and then heat treated to a T6 condition. The final steps include hard anodizing for corrosion resistance and a gloss powder coated for a stunning appearance. Individual exhaust ports are cooled by a balanced and even water flow thru the manifold. Exhaust tailpipes are available in a standard exit or custom applications and are constructed from quality 316L stainless steel.

  • 35" Overall Width on stock heads.
  • 29-1/2" Exhaust Center to Center on stock heads.
  • 8" Tall from Exhaust center-line to top of manifold on stock heads.
  • 12-3/4" Tall from Exhaust center-line to top of riser on stock heads.

48 Ounce Billet Aluminum Outdrive Reservoir with Sender
Starting From:
$349.99

This Part has options, please click the button below to order.

48 Ounce Billet Aluminum Outdrive Reservoir with Sender

MULTIPLE PART NUMBER OPTIONS. CLICK PART OPTIONS FOR MORE INFO ->

48 Ounce Billet Aluminum Outdrive Reservoir with Merc Warning Sender, Satin or Black

Hardin Marine redefines the Oil Reservoir segment of the marine industry in 2019 with all new higher volume see through designs manufactured with state of the art CNC Precision. These new reservoirs will add the strength and capacity improvements needed in virtually all segments of the power boating industry.

  • 9.60" over all height X 4.60" deep X 4.50" wide
  • comes with 4' of -4 hose and fittings.
  • has Low volume warning sensor.
  • 48 oz. volume.
  • 5/16" mounting holes.
  • 1/4" thick wall lexan tube.

Mando Alternator Pulley
Your Price:
$159.99

496 / 8.2L Alternator Pulley

421-235

This billet aluminum alternator pulley is black anodized and replaces the original and now discontinued painted steel OEM versions from Mercury.


2- Groove Billet Crankshaft Pulley For Big Block Chevy
Your Price:
$189.99

496/ 8.1L Billet Crankshaft Pulley

421-231

This billet aluminum crankshaft pulley is black anodized and replaces the original and now discontinued painted steel OEM versions from Mercury.


4-Position Ignition Switch
Your Price:
$44.99

This Part has options, please click the button below to order.

4-Position Ignition Switch

620-1080

4-Position Ignition Switch - Battery, Ignition, Start, Accessory

Hardin Marine ignition switches are constructed from top quality brass. Each of these switches has a chrome plated lock nut and comes complete with a pair of keys. The switches also feature screw style terminals for positive electrical connections.


Length: 3-1/16"
Width: 1-1/2"
Fits up to 7/8" thick dash

5" Billet Aluminum Euro Style Grab Handle

Your Price:
$47.99

5" Billet Aluminum Euro Style Grab Handle

125-EH100 + Option(s)

5" Billet Aluminum Euro Style Handle - Each

We've got them - the latest in billet handles. These Euro Styled Handles feature smooth contoured shapes and edges. These units use the same mounting holes as the traditional handles and vents so they are perfect fora new boat building project or they will retro-fit the traditional handles and vents manufactured by Hardin Marine.

*Note- These grab handles are 7" long with 5" bolt centers. 5/16-18 NC blind hole threads

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

5" DG Bilge Vent

Your Price:
$34.99

This Part has options, please click the button below to order.

5" DG Bilge Vent

126-1005 + Option(s)

5" DG Bilge Vent - NOTE: LIMITED QUANTITIES AND COLORS AVAILABLE

Stylish 5" Bilge Vent, fully machined from billet aluminum. Pairs with DG Grab Handle.

  • Bolt to Bolt: 5"
  • Length: 7-1/8"
  • Width: 3-7/8"

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

5" Marine Grade Soft Wall Exhaust Hose
Your Price:
$3.99

5" Marine Grade Soft Wall Exhaust Hose

100-200-5004

5" I.D Marine Grade Soft Wall Exhaust Hose

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.


5" Single Grip Billet Aluminum Grab Handle

Your Price:
$64.99

5" Single Grip Billet Aluminum Grab Handle

125-BH100 + Option(s)

5" Single Grip Billet Aluminum Grab Handle - Each

Hardin Marine offers this popular grab handle constructed from billet aluminum in both a single hand 5" version 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 7" long with 5" bolt centers

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

4-1/2" I.D. External Flapper
Your Price:
$49.99

5" to 6" I.D. External Salisbury Flapper

810-EG-500

5" - 6" 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.

NOTE: THIS FLAP HAS A 6" I.D. AND MUST BE CUT DOWN TO GO ON 5" TUBE!


5" Stainless Steel Exhaust Flappers
Your Price:
$659.99

5" Stainless Steel Exhaust Flappers

410-280177

5" 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.


5/16" Stainless Steel Washer
Your Price:
$1.50

5/16" Stainless Steel Washer

900-31AN-STSS

5/16" Stainless Steel Washer.


5/16"-16 Allen Bolt, 0.75" Long
Your Price:
$1.59

5/16"-16 Allen Bolt, 0.75" Long

900-31C075-SHS

5/16"-24 Allen Bolt, 0.75" Long. Coarse Thread


5/16"-18 Hex Head Bolt, 4.00" Long
Your Price:
$4.25

5/16"-18 Hex Head Bolt, 4.00" Long

900-31C400-HHS

5/16"-18 Hex Head Bolt, 4.00" Long


5/16"-18 Hex Head Bolt, 6.00" Long
Your Price:
$4.99

5/16"-18 Hex Head Bolt, 6.00" Long

900-31C600-HHS

5/16"-18 Hex Head Bolt, 6.00" Long


5/16"-18 Hex Head Bolt, 8.00" Long
Your Price:
$10.99

5/16"-18 Hex Head Bolt, 8.00" Long

900-31C800-HHS

5/16"-18 Hex Head Bolt, 8.00" Long


5/16"-18 Hex Head Bolt, 8.50" Long
Your Price:
$13.75

5/16"-18 Hex Head Bolt, 8.50" Long

900-31C850-HHS

5/16"-18 Hex Head Bolt, 8.50" Long


5/16"-24 Allen Bolt, 0.75" Long
Your Price:
$2.75

5/16"-24 Allen Bolt, 0.75" Long

900-31F075-SHS

5/16"-24 Allen Bolt, 0.75" Long


5/16"-24 Allen Bolt, 1.00" Long
Your Price:
$2.49

5/16"-24 Allen Bolt, 1.00" Long

900-31F100-SHS

5/16"-24 Allen Bolt, 1.00" Long, fine thread.


5/16-18" Stainless Steel Nylon Lock Nut - Half Height
Your Price:
$1.75

5/16-18" Stainless Steel Nylon Lock Nut - Half Height

900-31CN-HNSS

5/16-18" Stainless Steel Nylon Lock Nut - Half Height, Coarse Thread.


5/8" Left Hand Male Rod End
Your Price:
$61.99

5/8" Left Hand Male Rod End

135-5858L

5/8" Left Hand Male Rod End

These rod ends are all stainless steel


5/8" Marine Bilge Hose
Your Price:
$1.20

5/8" Marine Bilge Hose

100-120-0586

5/8" I.D Bilge Hose

This hose is designed to go from your bilge pump to your water dump It is flexible and easy to route.

Water bilge 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.