Hardin Marine

-6 AN Stainless Steel Bulkhead Thru-Hull Fitting

This thru-hull with its one-piece construction will not lead as two-piece thru-hulls are prone to do. It gives a finely finished look to any installation. This bulkhead fitting has a 1/4" NPT internal female thread and is 3-1/2" long

Stainless Steel Air Vents

These stainless steel vents provide great airflow and long life with all 304 stainless steel construction. Available in four different sizes to fit practically any boat.  Dimensions below are overall size.

Stainless Steel Allen Head Bolt Kit For Hardin Xtreme Series Valve Covers

Stainless Steel Bolt Kits - S/B Chevy Oil Pan Bolt Kit
We offer a full selection of manifold bolt kits to fit most popular marine engines.  These kits come complete with the correct number of bolts and stainless steel washers. 

Stainless Steel Bolt Kits - S/B Chevy Steel Valve Cover Bolt Kit
We offer a full selection of manifold bolt kits to fit most popular marine engines.  These kits come complete with the corre

Stainless Steel Bolt Kits - S/B Chevy Valve Cover Bolt Kit (Pre-87)
We offer a full selection of manifold bolt kits to fit most popular marine engines.  These kits come complete with the correct num

Stainless Steel Bolt Spacers

These beautiful finished CNC machined spacers are custom made in various sizes to accommodate many applications.

• Heavy Duty
• General Purpose EPDM
• Durable cushion help reduce vibration and product your lines
• .265 mounting hole diameter
• Sold in packs of 5

Stainless Steel Extension Box Steering Ram Mounting Bracket

These super duty constructed 316L stainless steel brackets are designed so that a space saver full hydraulic steering system can be mounted many popular outdrive style extension boxes.

Stainless Steel Flame Arrestor Spacer
Holley 4500 (7.25" I.D. x 1" Tall)

These spacers were developed to allow additional throttle linkage arm clearance for use with many aftermarket EFI Throttle bodies.

Stainless Steel Gen 7 PLUS Sea Pump for Mercury 350 Mag, 496 MAG /HO, 8.2L Mag and 502 Mag - With Pulley

The NEW and IMPROVED Gen 7 Plus Sea Pump now includes dual seals and dual bearings. The bearing are also 40% larger than OEM bearings leading to even longer pump life!

• 100-percent factory leak tested to ensure OEM dependability
• Premium SPEC-approved quality components
• Premium SPEC-quality seals: utilizing OE face materials provides exceptional heat transfer and low friction
• Endurance-quality bearings: severe-duty, precision-ground and lubricated Heat-treated bearing shafts to match rollers
• High-quality, protective packaging

For a number of years now the factory sea pumps have been plagued with a design flaw that made each factory pump a throw away non serviceable item. While the impeller could be serviced it is the factory body that wears out prematurely. Without the proper tolerances these units just won’t pump water. Well, Hardin Marine, the largest manufacturer of all Stainless Steel Sea Pumps set out to again solve the short comings of OEM equipment. By developing a stainless steel 316 heat treated casting Hardin Marine was able to incorporate new dual stainless steel serviceable wear plates as well as the use of a standard common Mercury water impeller. These characteristics have now turned this pump into a serviceable replacement that will provide years of serviceable life span. And all at a fraction of the cost of the original pump. So if you’re out to update and upgrade to a pump that's designed to last a life time, look no further as it has arrived.

Stainless Steel Gen 7 Plus Sea Pump for Mercury 350 Mag, 496 Mag / HO, 8.2L Mag and 502 Mag (No Pulley)

The NEW and IMPROVED Gen 7 Plus Sea Pump now includes dual seals and dual bearings. The bearing are also 40% larger than OEM bearings leading to even longer pump life!

NOTE:  YOU CAN PURCHASE THE MODEL WITH PULLEY PRE-INSTALLED (625-4131) BY CLICKING HERE.

• 100-percent factory leak tested to ensure OEM dependability
• Premium SPEC-approved quality components
• Premium SPEC-quality seals: utilizing OE face materials provides exceptional heat transfer and low friction
• Endurance-quality bearings: severe-duty, precision-ground and lubricated Heat-treated bearing shafts to match rollers
• High-quality, protective packaging

For a number of years now the factory sea pumps have been plagued with a design flaw that made each factory pump a throw away non serviceable item. While the impeller could be serviced it is the factory body that wears out prematurely. Without the proper tolerances these units just won’t pump water. Well, Hardin Marine, the largest manufacturer of all Stainless Steel Sea Pumps set out to again solve the short comings of OEM equipment. By developing a stainless steel 316 heat treated casting Hardin Marine was able to incorporate new dual stainless steel serviceable wear plates as well as the use of a standard common Mercury water impeller. These characteristics have now turned this pump into a serviceable replacement that will provide years of serviceable life span. And all at a fraction of the cost of the original pump. So if you’re out to update and upgrade to a pump that's designed to last a life time, look no further as it has arrived. Note: Impeller is included.

Stainless Steel Gen 8 Sea Pump for Mercury (No Pulley)

• 100-percent factory leak tested to ensure OEM dependability
• Premium SPEC-approved quality components
• Premium SPEC-quality seals: utilizing OE face materials provides exceptional heat transfer and low friction
• Endurance-quality bearings: severe-duty, precision-ground and lubricated Heat-treated bearing shafts to match rollers
• High-quality, protective packaging

This is the new Generation 8 “Extreme Series” sea pump. Hardin Marine, the largest manufacturer of all Stainless Steel Sea Pumps set out to again solve the short comings of OEM equipment. By developing a stainless steel 316 heat treated casting that would incorporate new dual stainless steel serviceable wear plates as well as the use of a standard common water pump impeller.

These characteristics have now turned this pump into a lifetime serviceable replacement pump that will provide years of serviceable life span. And all at a fraction of the cost of the original pump. So if you’re out to update and upgrade to a pump that’s designed to last a lifetime, look no further as it has arrived. Replaces OEM 8M0095465, 8M0118070, 8M0123307, 46-8M0122667. Note: Impeller is included.

NOTE: Click here to figure out if you have the older style (design 1) or newer style (design 2) housing and wear plate.

This group #24 battery boxes is made of Hi-Quality 304-L marine grade stainless steel, TIG-welded and electro-polished for long lasting performance. 7-¼” x 10-¼” Stainless Battery Box Kit. This battery box will accommodate most group #24 batteries. Our standard battery boxes are available in 3 group sizes, #24, #27, #30/31, optional cover step plate and also with sealed lower containment box to prevent leakage into the bilge or environment. This containment model is made to NMMA standards. All Battery boxes come with a 10 year limited warranty.

This group #27 battery boxes is made of Hi-Quality 304-L marine grade stainless steel, TIG-welded and electro-polished for long lasting performance. 7-¼” x 12-½" Stainless Battery Box Kit. This battery box will accommodate most group #27 batteries. Our standard battery boxes are available in 3 group sizes, #24, #27, #30/31, optional cover step plate and also with sealed lower containment box to prevent leakage into the bilge or environment. This containment model is made to NMMA standards. All Battery boxes come with a 10 year limited warranty.

This group #30/31 battery boxes is made of Hi-Quality 304-L marine grade stainless steel, TIG-welded and electro-polished for long lasting performance. 7-¼” x 13-½” Stainless Battery Box Kit. This battery box will accommodate most group #30/31 batteries. Our standard battery boxes are available in 3 group sizes, #24, #27, #30/31, optional cover step plate and also with sealed lower containment box to prevent leakage into the bilge or environment. This containment model is made to NMMA standards. All Battery boxes come with a 10 year limited warranty.

2-Piece Valve Cover Accessories - Stainless Steel Hardware Kit

***WARNING**** Do not fall victim to the failure of the OEM blue plastic drain plugs. The factory cheap plugs crack, break off and create service to nightmares to actual water leaks into your boat. Hardin Marine has designed the "Lifetime Series" drain plugs to perfectly blend with their award winning lifetime series sea pumps. Whether your replacing your sea pump or merely servicing your boat you cannot afford to not update to the simple to install safer drain plugs. these replacements for Mercruiser #22-806608A02 / 8M2000874 from Hardin Marine are polished Stainless Steel and will last a lifetime!

Stainless Steel OEM Replacement Filter and Mounting Head

This unit is a perfect economical upgrade for a mildly modified marine engine. Each stainless steel mounting head features larger than stock 3/8" NPTF fuel inlets and outlets allowing a 15% increase over original equipment versions. This unit uses a high quality OEM replacement filter for easy serviceability.

Stainless Steel Oil Filter Bypass Eliminator - BBC Gen 4 and SBC

This strong stainless steel mount does not have a bypass so it eliminates the possibility of unfiltered oil entering the engine while replacing the weak and often failed factory unit.

When a marine engine is installed in the bilge of a boat there is little or no access to the bottom of the engine therefore a remote mounted oil filter is required.  An oil filter block off adapter must be bolted on the original oil filter location to accomplish this.  These block off adapters are constructed of stainless steel.  They are completely O-ringed on the sealing surfaces to eliminate oil leaks, copper sealing washers are NOT used under the mounting bolt heads.

Hardin Marine's all new stainless steel trim cylinder end caps are the perfect addition to any Imco, Mercruiser Bravo or Alpha One application. Simple, Stunning. Highly Polished 316L Stainless Steel construction and quick, simple easy to install. Get rid of those cheap stock black plastic caps because your boat deserves better. Sure it's Jewelry or Bling, you pick the term, but isn't your boat worth it? Sold Each. Also available in packs of 4.

NOTE: DOES NOT FIT ALPHA GEN II

Hardin Marine's all new stainless steel trim cylinder end caps are the perfect addition to any Imco, Mercruiser Bravo or Alpha One application.Simple, Stunning. Highly Polished 316L Stainless Steel construction and quick, simple easy to install. Get rid of those cheap stock black plastic caps because your boat deserves better. Sure it's Jewelry or Bling, you pick the term, but isn't your boat worth it? 4-PACK.

NOTE: DOES NOT FIT ALPHA GEN II