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Hardin Marine

Xtreme Marine™ Seal Intake Gasket - Big Block Chevy Rectangular Port
Your Price:
$53.25

Xtreme Marine Seal Intake Gasket - Big Block Chevy Rectangular Port

300-17342

Xtreme Marine™ Seal Intake Gasket -Big Block Chevy Rectangular Port Without Top Bolt Holes Competition Style (No End Seals)- Sold in Pairs

These hi-performance intake manifold gasket sets are manufactured using the latest in synthetic fiber nitrile materials. This material is designed without any metal core allowing engine builders the option of port trimming for modified ports. These gaskets resist oil, gasoline, and even alcohol. A silicone sealing bead has been added to our Xtreme Marine Seal Gaskets for an additional sealing bead around ports where it's needed most on modified engines.

  • Exceeds original equipment specifications
  • Perfect for bi-metal applications (aluminum intake / cast iron blocks)
  • Silicone beaded for a leak-proof seal
  • Includes cork end gaskets and a distributor gasket
  • Manufactured from cellulose/nitrile composition gasket material
  • Provides excellent sealing and durability

Sold in Pairs


Xtreme Marine™ Seal Intake Gasket - Chevy 4.3L V6
Your Price:
$39.99

Xtreme Marine Seal Intake Gasket - Chevy 4.3L V6

300-17310

Xtreme Marine™ Seal Intake Gasket -Chevy 4.3L V6- Sold in Pairs

These hi-performance intake manifold gasket sets are manufactured using the latest in synthetic fiber nitrile materials. This material is designed without any metal core allowing engine builders the option of port trimming for modified ports. These gaskets resist oil, gasoline, and even alcohol. A silicone sealing bead has been added to our Xtreme Marine Seal Gaskets for an additional sealing bead around ports where it's needed most on modified engines.

  • Exceeds original equipment specifications
  • Perfect for bi-metal applications (aluminum intake / cast iron blocks)
  • Silicone beaded for a leak-proof seal

Sold in Pairs


Xtreme Marine™ Seal Intake Gasket - Ford 460 V8
Your Price:
$53.25

Xtreme Marine Seal Intake Gasket - Ford 460 V8

300-17368

Xtreme Marine™ Seal Intake Gasket -Ford 460 V8- Sold in Pairs

These hi-performance intake manifold gasket sets are manufactured using the latest in synthetic fiber nitrile materials. This material is designed without any metal core allowing engine builders the option of port trimming for modified ports. These gaskets resist oil, gasoline, and even alcohol. A silicone sealing bead has been added to our Xtreme Marine Seal Gaskets for an additional sealing bead around ports where it's needed most on modified engines.

  • Exceeds original equipment specifications
  • Perfect for bi-metal applications (aluminum intake / cast iron blocks)
  • Silicone beaded for a leak-proof seal
  • Port size 2.250" Tall by 2.00" Wide

Sold in Pairs


Xtreme Marine Seal Intake Gasket - Mercury 525 Rectangle Port 1.75 X 2.50 .060
Your Price:
$49.99

Xtreme Marine Seal Intake Gasket - Mercury 525 Rectangle Port 1.75 X 2.50 .060

300-17344

  • Material: Fiber
  • Compressed Thickness: .060
  • Port Shape: Rectangle
  • Port Size: 1.754 x 2.505
  • Replacement for Mercury # 27-818188
  • Fits: MCM 450, 500, 500 Bulldog, 525SC, 600SC & 800SC (1991 & newer) 500 EFI , 525EFI

Sold in Pairs


Xtreme Marine™ Seal Intake Gasket - Oldsmobile 350-455 V8
Your Price:
$34.99

Xtreme Marine Seal Intake Gasket - Oldsmobile 350-455 V8

300-17370

Xtreme Marine™ Seal Intake Gasket -Oldsmobile 350-455 V8- Sold in Pairs

These hi-performance intake manifold gasket sets are manufactured using the latest in synthetic fiber nitrile materials. This material is designed without any metal core allowing engine builders the option of port trimming for modified ports. These gaskets resist oil, gasoline, and even alcohol. A silicone sealing bead has been added to our Xtreme Marine Seal Gaskets for an additional sealing bead around ports where it's needed most on modified engines.

  • Exceeds original equipment specifications
  • Perfect for bi-metal applications (aluminum intake / cast iron blocks)
  • Silicone beaded for a leak-proof seal

Sold in Pairs


Xtreme Marine™ Seal Intake Gasket - Small Block Chevy 350 Early Non-Vortec Head
Your Price:
$29.99

Xtreme Marine Seal Intake Gasket - Small Block Chevy 350 Early Non-Vortec Head

300-17320

Xtreme Marine™ Seal Intake Gasket -Small Block Chevy 350 Early Non-Vortec Head- Sold in Pairs

These hi-performance intake manifold gasket sets are manufactured using the latest in synthetic fiber nitrile materials. This material is designed without any metal core allowing engine builders the option of port trimming for modified ports. These gaskets resist oil, gasoline, and even alcohol. A silicone sealing bead has been added to our Xtreme Marine Seal Gaskets for an additional sealing bead around ports where it's needed most on modified engines.

  • Exceeds original equipment specifications
  • Perfect for bi-metal applications (aluminum intake / cast iron blocks)
  • Silicone beaded for a leak-proof seal

Sold in Pairs


Xtreme Marine™ Seal Intake Gasket - Small Block Chevy 350 Vortec Head
Your Price:
$36.99

Xtreme Marine Seal Intake Gasket - Small Block Chevy 350 Vortec Head

300-17321

Xtreme Marine™ Seal Intake Gasket -Small Block Chevy 350 Vortec Head- Sold in Pairs

These hi-performance intake manifold gasket sets are manufactured using the latest in synthetic fiber nitrile materials. This material is designed without any metal core allowing engine builders the option of port trimming for modified ports. These gaskets resist oil, gasoline, and even alcohol. A silicone sealing bead has been added to our Xtreme Marine Seal Gaskets for an additional sealing bead around ports where it's needed most on modified engines.

  • Exceeds original equipment specifications
  • Perfect for bi-metal applications (aluminum intake / cast iron blocks)
  • Silicone beaded for a leak-proof seal

Sold in Pairs


Xtreme Marine Seal Oil Pan Gasket - 4.3 V6 Chevy
Your Price:
$43.99

Xtreme Marine Seal Oil Pan Gasket - 4.3 V6 Chevy

300-17971

Xtreme Marine Seal Oil Pan Gasket - 4.3 V6 Chevy with 1-piece rear seal (rear seal sold separately)-Sold Each

These Xtreme Marine Seal oil pan gasket sets are designed for today's performance marine engines that create excessive amounts of vacuum and pressure in the engine caused by excessive windage of a wet sump oiling system. These gaskets are constructed from a high pressure drawn fiber material that offers excellent strength and superior resistance to blowout.

Sold Each


Xtreme Marine Seal Oil Pan Gasket - Big Block Chevy Gen 4
Your Price:
$29.99

Xtreme Marine Seal Oil Pan Gasket - Big Block Chevy Gen 4

300-17985

Xtreme Marine Seal Oil Pan Gasket - Big Block Chevy Gen 4 (2-piece rear seal)- Sold Each

These Xtreme Marine Seal oil pan gasket sets are designed for today's performance marine engines that create excessive amounts of vacuum and pressure in the engine caused by excessive windage of a wet sump oiling system. These gaskets are constructed from a high pressure drawn fiber material that offers excellent strength and superior resistance to blowout.

Sold Each


Xtreme Marine Seal Oil Pan Gasket - Ford 460 Oil Pan Gasket
Your Price:
$34.99

Xtreme Marine Seal Oil Pan Gasket - Ford 460 Oil Pan Gasket

300-17993

Xtreme Marine Seal Oil Pan Gasket - Ford 460 Oil Pan Gasket- Sold Each

These Xtreme Marine Seal oil pan gasket sets are designed for today's performance marine engines that create excessive amounts of vacuum and pressure in the engine caused by excessive windage of a wet sump oiling system. These gaskets are constructed from a high pressure drawn fiber material that offers excellent strength and superior resistance to blowout.

Sold Each


Xtreme Marine Seal Oil Pan Gasket - Oldsmobile 350-455 Oil Pan Gasket Set
Your Price:
$37.99

Xtreme Marine Seal Oil Pan Gasket - Oldsmobile 350-455 Oil Pan Gasket Set

300-17995

Xtreme Marine Seal Oil Pan Gasket - Oldsmobile 350-455 Oil Pan Gasket Set- Sold Each

These Xtreme Marine Seal oil pan gasket sets are designed for today's performance marine engines that create excessive amounts of vacuum and pressure in the engine caused by excessive windage of a wet sump oiling system. These gaskets are constructed from a high pressure drawn fiber material that offers excellent strength and superior resistance to blowout.

Sold Each


Xtreme Marine Seal Oil Pan Gasket - Small Block Chevy
Your Price:
$27.99

Xtreme Marine Seal Oil Pan Gasket - Small Block Chevy

300-17980

Xtreme Marine Seal Oil Pan Gasket - Small Block Chevy with Port Side Dipstick and 2-piece rear seal (rear seal sold separately)- Sold Each

These Xtreme Marine Seal oil pan gasket sets are designed for today's performance marine engines that create excessive amounts of vacuum and pressure in the engine caused by excessive windage of a wet sump oiling system. These gaskets are constructed from a high pressure drawn fiber material that offers excellent strength and superior resistance to blowout.

Sold Each


Xtreme Marine Seal Oil Pan Gasket - Small Block Chevy
Your Price:
$28.99

Xtreme Marine Seal Oil Pan Gasket - Small Block Chevy

300-17981

Xtreme Marine Seal Oil Pan Gasket - Small Block Chevy with Starboard side Dipstick and 2-piece rear seal (rear seal sold separately)-Sold Each

These Xtreme Marine Seal oil pan gasket sets are designed for today's performance marine engines that create excessive amounts of vacuum and pressure in the engine caused by excessive windage of a wet sump oiling system. These gaskets are constructed from a high pressure drawn fiber material that offers excellent strength and superior resistance to blowout.

Sold Each


Xtreme Marine Seal Oil Pan Gasket - Small Block Chevy
Your Price:
$33.99

Xtreme Marine Seal Oil Pan Gasket - Small Block Chevy

300-17982

Xtreme Marine Seal Oil Pan Gasket - Small Block Chevy with 1-piece rear seal (rear seal sold separately)- Sold Each

These Xtreme Marine Seal oil pan gasket sets are designed for today's performance marine engines that create excessive amounts of vacuum and pressure in the engine caused by excessive windage of a wet sump oiling system. These gaskets are constructed from a high pressure drawn fiber material that offers excellent strength and superior resistance to blowout.

Sold Each


Xtreme Series Valve Covers, Polished, 1 Hole Machined with Billet Oil Plug
Your Price:
$349.99

Xtreme Series Valve Cover Kit, Polished, 1 Hole Machined with Billet Oil Plug

620-45002

Xtreme Series Valve Cover Kit, Polished, 1 Hole Machined with Billet Oil Plug and Bolt Kit (pair)

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best 1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles. One of the covers has a billet screw in -16 AN oil fill. Bolt Kit included.


Xtreme Series Valve Covers, Polished, 1 Hole Machined with Billet Oil Plug
Your Price:
$294.99

Xtreme Series Valve Cover Kit, Polished, for Dry Sump

620-45004

Xtreme Series Valve Cover Kit, Polished, for Dry Sump, with Bolt Kit

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best 1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles. Includes Bolt Kit. DRY SUMP APPLICATIONS ONLY. These Valve Covers do not have any oil fill holes.


Xtreme Series Valve Cover Kit, Satin with 1 Hole Machined
Your Price:
$289.99

Xtreme Series Valve Cover Kit, Satin with 1 Hole Machined

620-45003

Xtreme Series Valve Cover Kit, Satin with 1 Holes Machined, with a Oil Plug and Bolt Kit (pair)

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles. One of the covers has a billet screw in -16 AN oil fill. Bolt Kit included.

These valve covers come in a raw satin finish, and require preparation for powder coat or painting!


Xtreme Series Valve Cover Kit, Satin, for Dry Sump
Your Price:
$224.99

Xtreme Series Valve Cover Kit, Satin, for Dry Sump

620-45006

Xtreme Series Valve Cover Kit, Satin, for Dry Sump with Bolt Kit

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best 1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles.

These valve covers come in a raw satin finish, and require preparation for powder coat or painting!


Xtreme Series Valve Cover System, Polished
Your Price:
$399.99
This Part has options, please click the button below to order.

Xtreme Series Valve Cover System - Raw

620-45001

Xtreme Series Valve Cover System, 1 Billet Oil Plug, 2 Breather Extensions and Filtered Breathers Included (pair)

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best 1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles. One of the covers has a billet screw in -16 AN oil fill.

These use valve covers that are raw/unpolished.


Xtreme Series Valve Cover System, Polished
Your Price:
$459.99
This Part has options, please click the button below to order.

Xtreme Series Valve Cover System, Polished

620-45000

Xtreme Series Valve Cover System, Polished with 1 Billet Oil Plug, 2 Breather Extensions and Filtered Breathers Included (pair)

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best 1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles. One of the covers has a billet screw in -16 AN oil fill.


Xtreme Series Valve Covers, Polished with 3 Holes Machined
Your Price:
$339.99

Xtreme Series Valve Covers, Polished with 3 Holes Machined

620-44050

Xtreme Series Valve Covers, Polished with 3 Holes Machined, 1 with a Oil Plug, 2 for Breather Installation (pair)

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best 1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles. One of the covers has a billet screw in -16 AN oil fill. Breathers sold separately.


Xtreme Series Valve Covers, Polished, 1 Hole Machined with Billet Oil Plug
Your Price:
$329.99

Xtreme Series Valve Covers, Polished, 1 Hole Machined with Billet Oil Plug

620-44000

Xtreme Series Valve Covers, Polished, 1 Hole Machined with Billet Oil Plug (pair)

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best 1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles. One of the covers has a billet screw in -16 AN oil fill.


Xtreme Series Valve Covers, Polished, 1 Hole Machined with Billet Oil Plug
Your Price:
$279.99

Xtreme Series Valve Covers, Polished, for Dry Sump

620-44054

Xtreme Series Valve Covers, Polished, for Dry Sump

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best 1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles.


Xtreme Series Valve Covers, Satin with 1 Hole Machined
Your Price:
$259.99

Xtreme Series Valve Covers, Satin with 1 Hole Machined

620-44001

Xtreme Series Valve Covers, Satin with 1 Holes Machined, with a Oil Plug (pair)

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles. One of the covers has a billet screw in -16 AN oil fill.

These valve covers come in a raw satin finish, and require preparation for powder coat or painting!


Xtreme Series Valve Covers, Satin with 3 Holes Machined
Your Price:
$269.99

Xtreme Series Valve Covers, Satin with 3 Holes Machined

620-44051

Xtreme Series Valve Covers, Satin with 3 Holes Machined, 1 with a Oil Plug, 2 for Breather Installation (pair)

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles. One of the covers has a billet screw in -16 AN oil fill.

These valve covers come in a raw satin finish, require preparation for powder coat or painting!


Xtreme Series Valve Covers, Satin, for Dry Sump
Your Price:
$209.99

Xtreme Series Valve Covers, Satin, for Dry Sump

620-44056

Xtreme Series Valve Covers, Satin, for Dry Sump

A number of companies have tried to copy this Hardin Marine cover by building sand cast copies. There's a difference if you look at their wavy, pin holed, porous covers you'll see that the Hardin Marine "XS" Xtreme cover is a beautiful die cast cover with no waves and no blemishes. So if you're looking for the best 1-piece cover this is it. This cover has been specially designed to fit marine Big Block Chevy engine with center rise exhaust. Angling one side of the cover helps to access the 2 lower center bolts while maintaining enough valve cover height to run roller rockers and stud girdles.

These valve covers come in a raw satin finish, and require preparation for powder coat or painting!


Xtreme Billet Coalescing Fuel & Water Separator
Your Price:
$229.99

Xtreme Stainless Steel Fuel Filter Head with FST Filter - Black Anodized

625-7676

Xtreme Stainless Steel Fuel Filter Head with FST Filter - Black Anodized

Form and function is beautifully combined in these coalescing fuel and water separators Constructed of stainless steel and polished to a mirror finish these filter mounts offer a quad webbed bolt configuration that allows a straight-thru or 90 degree inlet to outlet fuel hose routing. The large 3/4" NPT ports provide for maximum fuel flow approaching 200 gallons per hour The high flow and high pressure capabilities and the 1/8" NPT fuel pressure sender port of this assembly make it perfect for both carbureted and fuel injected applications The unique "coalescing" element core is impervious to moisture and contamination and foreign particles while providing maximum fuel system flow.

  • Constructed of Polished 316L Stainless Steel. Polished Bracket with Black Anodized Filter Head.
  • Quad webbed bolt configuration allows a straight-thru or 90 degree inlet to outlet fuel hose routing.
  • Three Large 3/4" NPT ports provide for maximum fuel flow approaching 300 GPH.
  • 1/8" NPT fuel pressure sender port.
  • Perfect for carbureted and fuel injected applications.
  • Kit Includes HP FST RF500M filter

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