Hardin Marine

Rubber Seal for Cable Thru Hull
Your Price:
$5.99

Rubber Seal for Cable Thru Hull

137-8064

  • For Mayfair Hydraulics Trim Tab Thru Hull Fitting
  • 3/8" I.D. 
  • Also replaces Mercruiser part number 23-845970


S/B Chevy Valve Spring Oiling System
Your Price:
$189.99

S/B Chevy Valve Spring Oiling System

755-8484

Small Block Chevy Valve Spring Oiling System- 3/8" Thick 

Valve cover rails are a Keith Eickert exclusive product that has been designed to solve the problem of excessive valve train failure. Valve spring fatigue and failure cause by long duration engine operation at higher engine rpm’s. Valve spring oilers are an industry standard in many forms of professional motorsports. Now this system can easily be installed on nearly all small block chevrolet application to dramatically extend valve train life. Simple 1/16" NPT single female oil inlets per rail provide ease of plumbing. Sold in pairs.

TECH: On engines with a higher average rpm and power band the stock oil flow thru the valve train can be marginal at best. This is a very common cause of premature wear and escalating oil temps. Most conditions on endurance applications such as performance boats or off shore race boats plumbing a separate pressurized spray bar to cool valve springs and rockers that feeds from either a passage in the block or a separate oil supply has proven to be extremely key to long term durability, because the rapid cycling torsional stress on valve springs can easily cause them to heat to over 700F if not bathed in a constant flow of oil that absorbs and carry's away the heat that builds up rapidly, many shaft rocker systems have strategically located oil shaft holes that direct flowing oil to the valve springs and rockers. Most people don't understand that almost 1/2 of an engines total heat comes from the valve train and bearing friction.

NOTE: Requires gaskets to be used on BOTH sides of the oiler plate.


S/C BBC 3 Groove Crank Pulley
Your Price:
$229.99

S/C BBC 3 Groove Crank Pulley

421-218

S/C BBC 3 Groove Crank Pulley

  • BBC 3grv crank pulley for Supercharger application.
  • Will fit either 3 or 6 bolt damper.
  • 5.40 outside diameter by 2.350 thick

Saf-T-Stop Switch
Your Price:
$33.99

Saf-T-Stop Switch

855-KS-2

Single I/O With Coiled Lanyard

For a single inboard engine, does not work with outboards. Meets requirements of existing laws covering mandatory use ofemergency stop switches. Plastic self-retracting lanyard. Black matte finish for attractive appearance. Mounts in a 1-1/2" diameter hole.Overall dimensions of switch housing are 2-3/4" x 2" and requires 1-1/2" behindpanel. Dual engine switches provide two completely isolated circuits to prevent feedback from one engine to the other.


Saf-T-Stop Switch
Your Price:
$48.99

Saf-T-Stop Switch

855-KS-22

Dual I/O With Coiled Lanyard

For dual inboard engines, does not work with outboards. Meets requirements of existing laws covering mandatory use of emergency stop switches. Plastic self-retracting lanyard. Black matte finish for attractive appearance. Mounts in a 1-1/2" diameter hole.Overall dimensions of switch housing are 2-3/4" x 2" and requires 1-1/2" behind panel. Dual engine switches provide two completely isolated circuits to prevent feedback from one engine to the other.


Saginaw Shuttle Valve Fittings
Your Price:
$65.00

Saginaw Shuttle Valve Fittings

135-1070

Saginaw Shuttle Valve Fitting (Pair)

These fittings were developed to assist in the plumbing of your Saginaw shuttle valve in pre-1994 applications These are custom built for just this application


Satin Crosswind 455 Olds Intake Manifold
Your Price:
$332.99

Satin Crosswind 455 Olds Intake Manifold

620-57026

Satin Crosswind 455 Olds Intake Manifold

This is the only high performance high rise dual plane manifold available for this engine. It features a number of unique enhancements. The CROSSWIND design which provides an air gap under the plenum helps cool the intake charge for maximum power production. It features a square bore carburetor pad which is an inch and a quarter taller than competitive dual plane manifolds which further enhances the power producing capabilities. The manifold can be drilled and tapped for nitrous nozzles and is also available in versions with machined injector bosses.


Satin Steel 1/4" NPT Dipstick
Your Price:
$29.99

Satin Steel 1/4" NPT Dipstick

620-910493

Satin Steel 1/4" NPT Dipstick Kit

The design of many marine oil pans does not allow the use of a stock dipstick. These pans have bungs to accommodate a universal dipstick kit. This universal dipstick kit is for pans which have a 1/4" NPT oil level check fitting built into them. The long tube can be bent to provide easy access. Dipstick needs to be re-calibrated for each installation. Overall tube length is 21". Tube is satin steel, with no finish or polish.

Comes with optional weld in bung for even wider array of installation methods.


SBC & BBC 3 Point Bellhousing
Your Price:
$429.99

SBC & BBC 3 Point Bellhousing

620-91150

  • Bell Housing Style Engine Mount.
  • Secure engine mount to Jet Pump.
  • Ultimate in Top Mounting Starter Applications.
  • Inspection cover 620-91146 included along with an SS mounting bolt kit.

SBC / BBC Thermostat Housing / Water Outlet Gasket
Your Price:
$1.99

SBC / BBC Thermostat Housing / Water Outlet Gasket

620-04112

Small Block & Big Block Chevy Thermostat Housing/Water Outlet Gasket


SBC 1350 Flywheel Post-1987, 1-pc Rear Seal
Your Price:
$199.99

SBC 1350 Flywheel Post-1987, 1-pc Rear Seal

500-2055

SBC 1350 Flywheel Post-1987, 1-pc Rear Seal

Need help choosing your new PTO flange? Check out this handy tutorial!


SBC Powder Coated Steel Lower Port Side Alternator Mounting Bracket Kit
Your Price:
$115.99

SBC Powder Coated Steel Lower Port Side Alternator Mounting Bracket Kit

620-910010

Small Block Chevy Powder Coated Steel Lower Port Side Alternator Mounting Bracket Kit

This alternator bracket is designed for severe duty applications as well as stock lake boats. The bracket is black powder coated and comes complete with all necessary hardware.


Standard 1-1/4" Slip-On Port Entry Stainless Steel Water Inlet Crossover
Your Price:
$229.99

SBC Standard 1-1/4" Slip-On Port Entry Water Inlet Crossover

410-1509

  • Made from 316L Stainless Steel.
  • Standard 1-1/4" Slip-On Port Entry Stainless Steel Water Inlet Crossover.
  • Precisely machined inlet plates welded to a large diameter crossover tube to provide equal water distribution.
  • Uses a standard 1-1/4" slip-on inlet connection.
  • Port inlet configuration, (check before ordering) for Small Block Chevy engines only.

Standard 1-1/4" Slip-On Starboard Entry Water Inlet Crossover
Your Price:
$239.99

SBC Standard 1-1/4" Slip-On Port Entry Water Inlet Crossover with Bypass

410-1512

  • Constructed of 316L Stainless Steel.
  • Standard 1-1/4" Slip-On Port Entry Stainless Steel Water Inlet Crossover.
  • Precisely machined inlet plates welded to a large diameter crossover tube to provide equal water distribution.
  • Uses a standard 1-1/4" slip-on inlet connection.
  • Bypass

Standard 1-1/4" Slip-On Starboard Entry Water Inlet Crossover
Your Price:
$264.99

SBC Standard 1-1/4" Slip-On Starboard Entry Water Inlet Crossover

410-1510

  • Constructed of 316L Stainless Steel.
  • Standard 1-1/4" Slip-On Starboard Entry Stainless Steel Water Inlet Crossover.
  • Precisely machined inlet plates welded to a large diameter crossover tube to provide equal water distribution.
  • Uses a standard 1-1/4" slip-on inlet connection.
  • Available in port and starboard inlet configuration, (check before ordering) for Small Block Chevy engines only.

Scoop and Velocity Stack Mounting Screens
Your Price:
$49.99

Scoop and Velocity Stack Mounting Screens

620-60450

Scoop and Velocity Stack Mounting Screens

These stainless steel air screens are perfect for attaching air scoops and velocity stacks.  They will flow plenty of air while keeping foreign objects from entering your carburetor. 5.5" diameter. Sold each.


Screen Washer for Gil / Hardin Offshore 3/8 Hole Clamp Type, Sea Strainer
Your Price:
$1.15

Screen Washer for Gil / Hardin Offshore 3/8 Hole Clamp Type, Sea Strainer

900-37ANSTSS

Lid Washer for Gil / Hardin Offshore 3/8 Hole Clamp Type, Sea Strainer

Designed to fit Gil Generation 2 (Single Knob) and Hardin Offshore Generation 1 Sea Strainers.


SE Special Edition Tuning Kit For MerCruiser 454 & 502 Magnum MPI Engines
Your Price:
$289.99

SE Special Edition Tuning Kit For MerCruiser 454 & 502 Magnum MPI Engines

620-75304

"SE" Special Edition Tuning Kit For MerCruiser 454 & 502 Magnum MPI Engines

This kit is an excellent choice for those just beginning performance modifications on a MerCruiser Magnum EFI Series engine. This kit includes the "SE" Special Edition flame arrestor that utilizes a high flow K&N clamp-on style filter element and high velocity air inlet adapter which increases air flow by as much as 20%. The included Flow Command adjustable fuel pressure regulator allows you to tune to the proper air flow by allowing adjustments from 25 to 65 PSI.


SE Sport Dual Plane Big Block Chevy Oval Port Intake Manifold - Polished
Your Price:
$314.99

SE Sport Dual Plane Big Block Chevy Oval Port Intake Manifold - Machine Polished

620-53000

"SE" Sport Dual Plane Big Block Chevy Oval Port Intake Manifold - Machine Polished

If you're looking for a manifold that's got it all then the "SE" Sport Intake is your answer. Its dual plane design assures that from idle to planing speeds you'll experience a power burst with incredible mid-range acceleration. This manifolds dual plane design lends itself to increased fuel efficiency as well. Note: the polishing is a "machine/semi polish" and not a mirror finish type polish.

RPM Range: 1500 to 6500


SE Sport Dual Plane Big Block Chevy Oval Port Intake Manifold - Satin
Your Price:
$294.99

SE Sport Dual Plane Big Block Chevy Oval Port Intake Manifold - Satin

620-53001

"SE" Sport Dual Plane Big Block Chevy Oval Port Intake Manifold - Satin Finish

If you're looking for a manifold that's got it all then the "SE"Sport Intake is your answer.  Its dual plane design assures that from idleto planing speeds you'll experience a power burst with incredible mid-rangeacceleration.  This manifolds dual plane design lends itself to increasedfuel efficiency as well.

RPM Range: 1500 to 6500


SE Sport Edition Loader Scoop for Berkeley JG, JC, JI, & Dominator Pumps
Your Price:
$169.99

SE Sport Edition Loader Scoop for Berkeley JG, JC, JI, & Dominator Pumps

620-103112

"SE" Sport Edition Loader Scoop for Berkeley JG, JC, JI, & Dominator Pumps

This is the all "SE" Sport Edition loader scoop from Hardin Marine. These loader scoops are a great entry level upgrade from a stock jet intake grate. They are designed to work best with stock or only mildly modified engine packages. By using an outer angle ramp design this unit can help to deliver more water into the jet intake for improved performance.


"SE" Sport Edition Loader Scoop for Jacuzzi WJ
Your Price:
$149.99

SE Sport Edition Loader Scoop for Jacuzzi WJ

620-103110

"SE" Sport Edition Loader Scoop for Jacuzzi WJ

This is the all "SE" Sport Edition loader scoop from Hardin Marine. These loader scoops are a great entry level upgrade from a stock jet intake grate. They are designed to work best with stock or only mildly modified engine packages. By using an outer angle ramp design this unit can help to deliver more water into the jet intake for improved performance.


SE Sport Edition Loader Scoop for Jacuzzi YJ
Your Price:
$109.99

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

SE Sport Edition Loader Scoop for Jacuzzi YJ

620-103111

"SE" Sport Edition Loader Scoop for Jacuzzi YJ

This is the all "SE" Sport Edition loader scoop from Hardin Marine. These loader scoops are a great entry level upgrade from a stock jet intake grate. They are designed to work best with stock or only mildly modified engine packages. By using an outer angle ramp design this unit can help to deliver more water into the jet intake for improved performance.


SeaPump Master Rebuild Mercury Gen 3, 850/1075
Your Price:
$429.99

Sea Pump Master Rebuild Mercury Gen 3, 850 / 1075 / 1100 / 1350

625-4296

SeaPump Master Rebuild Mercury Gen 3, 850/1075

This kit fits:
  • 850 SCI: 0M957579 & UP
  • 1075 SCI: 0M905359 THRU OM957024 GEN 3 PUMP ONLY. 0M957032 & UP
  • 1025 SCI: ALL
  • 1100 QC4V: ALL
  • 1200 SCI: ALL
  • 1350 QC4V: ALL
  • 1650 QC4V: ALL

SeaPump Master Rebuild Mercury Gen 3, 850/1075
Your Price:
$225.99

Sea Pump Master Rebuild Mercury OEM / Gen 3, 850 / 1075 / 1100 / 1350

625-4295

SeaPump Master Rebuild Mercury Gen 3, 850/1075

This kit fits:
  • 850 SCI: 0M957579 & UP
  • 1075 SCI: 0M905359 THRU OM957024 GEN 3 PUMP ONLY. 0M957032 & UP
  • 1025 SCI: ALL
  • 1100 QC4V: ALL
  • 1200 SCI: ALL
  • 1350 QC4V: ALL
  • 1650 QC4V: ALL

Sea Pump Tool Stud Kit
Your Price:
$15.99

Sea Pump Tool Stud Kit

625-4206

Sea Pump Tool Stud Kit

Sea Strainer Stud Sleeve
Your Price:
$5.59

Sea Strainer Stud Sleeve

620-913230

Sea Strainer Stud Sleeve