Hardin Marine

• Designed for use with all popular round billet fuel fills
• Accent colors in your boat or cover existing fuel fill mounting holes
• 4" Outside Diameter
• 3-7/16" Inside Diameter
• 1/4" Tall

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

Round Strainer O-Ring Kit

Fits: 625-4626

Rubber Engine Mount, Double

Increased capacity for Diesel and extra heavy-duty applications. The rubber cushions are locked to the base, not vulcanized and can be replaced. This mount is vertically adjustable to facilitate engine alignment. Each mount has a capacity of 550 lbs. Sold Each.

Rubber Engine Mount, Double

Increased capacity for Diesel and extra heavy-duty applications. The rubber cushions are locked to the base, not vulcanized and can be replaced. This mount is vertically adjustable to facilitate engine alignment. Each mount has a capacity of 550 lbs.

Rubber Engine Mount, Single

Adjustable both vertically and horizontally to facilitate engine-propeller shaft alignment. Each mount has a capacity of 350 lbs. The rubber cushions are locked to the base and are oil and fuel resistant.

Rubber Engine Mount, Single

Adjustable both vertically and horizontally to facilitate engine-propeller shaft alignment. Each mount has a capacity of 350 lbs. The rubber cushions are locked to the base and are oil and fuel resistant. This mount retains all of the fine features of the 620-52301, augmented by an additional tie-down area to bolt to the stringer pads.

Rubber Engine Mount, Single

Adjustable both vertically and horizontally to facilitate engine-propeller shaft alignment. Each mount has a capacity of 350 lbs. The rubber cushions are locked to the base and are oil and fuel resistant.

Rubber Engine Mount, Single

Adjustable both vertically and horizontally to facilitate engine-propeller shaft alignment. Each mount has a capacity of 350 lbs. The rubber cushions are locked to the base and are oil and fuel resistant. This mount retains all of the fine features of the 620-52304, augmented by an additional tie-down area to bolt to the stringer pads.

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

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

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.

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 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

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 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.

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

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

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

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.

• 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.

• 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

• 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

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.

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

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 - 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