This Part has options, please click the button below to order.
755-845 + Option(s) Big Block Chevy 2-Piece Valve Covers w/Valve Spring Oilers (pair)
These
valve covers are a Keith Eickert exclusive product that have been designed to
solve the problem of excessive valve spring fatigue and failure caused by long
duration engine operation at higher engine RPM's. An industry standard in
all forms of professional racing can now be added to your engine that will
dramatically extend valve train life. The oiling rail systems are
available for both standard traditional valve covers as well as for the Keith
Eickert 2-piece valve covers. The oiling system rail measures 3/8" thick
and incorporates eight precision-metered oil-spray jets that distribute
additional oil towards each valve spring assembly. Simple single oil
inlets per rail provide easy plumbing.
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421-215 BB Chevrolet 3 V-Groove Billet aluminum OEM style Crankshaft Pulley. This pulley fits Chevrolet 454 7.4L and 502 8.2L late model applications. Replaces Mercruiser Part #90081T1 and casting # 90081C.
Pulley Specifications: - 2.25" thick from damper face to front of pulley
- 1st groove (alternator) 6.60" diameter
- 2nd groove (sea pump) 5.05" diameter
- 3rd groove (power steering) 6.60" diameter
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410-WP8 - -8AN male flare fittings.
- Designed for Big Block Chevy Engines.
- Constructed of Polished Stainless Steel.
- Sold in Pairs.
- Ideal for jet boats, v-drives and offshore installations using AN style fittings.
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740-64201 Big Block Chevy Billet Small Diameter Crank Pulley - Machined from solid billets of the highest-grade aircraft aluminum for maximum durability and feature deep, precision-machined groove to ensure belt retention, even during extreme changes in engine rpm. These pulleys have a black anodized hard-coat for extended life and corrosion resistance . Diameter 5.250".
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620-05112 Big Block Chevy Crossover Gasket
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This Part has options, please click the button below to order.
625-82 + Option(s) Big Block Chevy Crossover Style Serpentine Drive Kit
Whether you're building a new power plant for your boat or you're like many
and are ready to step from the stone age of traditional V-Belts to the modern
long lasting and quiet operation of serpentine style drive system then Hardin
Marine has the ultimate solution. Serpentine systems are available in
either a crossover water inlet style or the factory circulating pump version.
The comes complete with sea pump as well as a factory style circulating water
pump (if called for), a 94 amp high-output chrome alternator, specially valved
power steering pump, all billet brackets and mounts as well as stunningly
polished precision CNC machined drive pulleys and matching idlers. The kit
will also include the correct mounting hardware and serpentine drive belt for
the smoothest of installations. Hardin Marine is leading the way with the
latest in boating technology.
If your application requires a bypass, you will have to drill and tap a hole as shown in this drawing.
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This Part has options, please click the button below to order.
625-82 + Option(s) Big Block Chevy Crossover Style Serpentine Drive Kit - NO POWER STEERING
Whether you're building a new power plant for your boat or you're like many
and are ready to step from the stone age of traditional V-Belts to the modern
long lasting and quiet operation of serpentine style drive system then Hardin
Marine has the ultimate solution. Serpentine systems are available in
either a crossover water inlet style or the factory circulating pump version.
The comes complete with sea pump as well as a factory style circulating water
pump (if called for), a 94 amp high-output chrome alternator, specially valved
power steering pump, all billet brackets and mounts as well as stunningly
polished precision CNC machined drive pulleys and matching idlers. The kit
will also include the correct mounting hardware and serpentine drive belt for
the smoothest of installations. Hardin Marine is leading the way with the
latest in boating technology. These drive kits version do not include the power steering assembly.
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625-4544 Big Block Chevy Half System Closed Cooling Kit Up To 650HP - Copper / Bras
- Deck Height: 9.8"
- 650 hp
- Fits: 454 CID through 540 CID engines. Half Kit cools engine only.
While there are numerous universal OEM closed cooling kits, this is not one of those. This is a true custom engineered and developed closed cooling system designed around traditional Std. deck height 9.8" Big Block Chevrolet applications. The kit is perfect for the 454 CID through 540 CID engines making up to 650 horsepower. We offer the closed cooling tank in a paint-to-finish primed coated version. The kit comes with tank, brackets, hoses, and thermostat housing.This High Performance Closed Cooling kit is designed for applications with horsepower levels to 650HP.
These kits are designed to be used with the Hardin Marine serpentine drive kits, can be used with standard V-Belt pulleys if using 625-8108 power steering bracket.
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300-182 Big Block Chevy Extra Thick Bolt Xtreme Marine Seal™ Valve Cover Gasket- Sold in Pairs
There is nothing more frustrating than a leaking valve cover seal, so don't settle for anything less than the best. That's why professional engine builders nationwide demand Xtreme Marine Seal valve cover gaskets. Produced from a blend of polymer and cork to provide a gasket that will last. Gaskets are .300" thick.
Sold in Pairs
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620-05115 For use on Big Block Chevrolet fuel pumps.
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625-4580 Big Block Chevy Full Closed Cooling Kit Up To 650HP - Copper / Brass
- Deck Height: 9.8"
- Length: 33"
- 650 hp
- Fits: 454 CID through 540 CID engines. The 625-4580 is a full system, cooling the engine and manifolds.
While there are numerous universal OEM closed cooling kits, this is not one of those. This is a true custom engineered and developed closed cooling system designed around traditional standard deck height 9.8" Big Block Chevrolet applications. The kit is perfect for the 454 CID through 540 CID engines making up to 650 horsepower. We offer the closed cooling tank in a paint-to-finish primed coating. The kit comes with tank, brackets, hoses, and thermostat housing. This High Performance Closed Cooling kit is designed for applications with horsepower levels to 650HP.
These kits are designed to be used with the Hardin Marine serpentine drive kits, can be used with standard V-Belt pulleys if using 625-8108 power steering bracket.
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This Part has options, please click the button below to order.
420-9105 + Option(s) Big Block Chevy Gen 4 "XS" Series Offshore Oil Pan - (Pan, oil pick-up & windage tray only)
The "XS" Xtreme Series 4-5/8" stroker oil pans are competition tested and race proven. They out perform all other pans available. Each pan starts out jig formed and precision TIG welded, then an exclusive race proven windage tray is added which prevents oil foaming and crankshaft windage, which helps to build more horsepower. Next a high volume oil pump pick-up with a support bracket is added. The entire pan is coated with a hardened aerospace epoxy to resist stains and corrosion. Designed to clear most front style engine mounts including MerCruiser. A simple comparison of available marine oil pans clearly points out Hardin Marine oil pans are boat lengths ahead of all other oil pans. Run what leading racers worldwide already use - the Hardin Marine "XS" Xtreme Series offshore oil pan.
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This Part has options, please click the button below to order.
620-9105 + Option(s)
- Extra Large 10 qt. (8.9" Deep) & 12 qt. (10" deep) pans.
- Pan rear support spacers provided added clearance to mounting fasteners.
- 1/4" NPT threaded flexible dipstick provides a leak proof seal between dipstick and pan.
- Heavy duty pan rails are notched to allow 4-5/8" stroke rotating assemblies.
- "T" bottom style offers additional oil capacity storage for constant supply to the engine oil pickup.
- Zinc plated one-piece windage tray and crank scraper prevents oil foaming, building more power than other brands.
- Highly flexible dipstick allows accessibility around engine mounts and exhaust systems.
- Oil relief in kick out allows added room for long filters and sandwich adapters.
- Fully gusseted high-flow oil pick-up included.
- Includes mounting bolt kit.
- Welded for durability.
- 1/2"-20 drain plug.
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300-17872 Big Block Chevy Gen 4 & 5 Timing Cover Gasket- Sold Each
These Hardin Marine Sea
timing/front cover gaskets are designed to exceed all original equipment
specifications. Each gasket is precision die-cut for a perfect fit
every time.
Sold Each
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620-52008 Stainless Steel Bolt Kits - B/B Chevy Gen 4 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
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300-16875 Big Block Chevy Gen 4, 2-piece Rear Main Seal- Sold Each
These excellent rear main seals are designed to replace worn, deteriorated
original equipment seals and provide years of trouble free service
Sold Each
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300-16872 Big Block Chevy Gen 4, 5 & 6 Front Seal- Sold Each
These excellent front timing
cover seals are designed to replace worn, deteriorated
original equipment seals and provide years of trouble free service
Sold Each
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620-52004 Stainless Steel Bolt Kits - B/B Chevy Gen 4/5 Timing Cover Bolt Kit
We offer a full selection of manifold bolt kits to fit most popular marine engines. These kits come complete with the correct num
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625-7704 Big Block Chevy Gen 5 & 6 Thermostatically Controlled Engine Block Adapter
Thermostatically Controlled Engine Block Adapter Gen 5/6 BBC
Maintaining proper engine oil temperature has become critical to the success or failure of today’s performance marine engines. Prolonged use of marine engines in conditions where oil cannot reach its optimum working temperatures will result in sludge formation and crankcase dilution which leads to excessive wear especially in the cylinder bores and bearing surfaces. A thermostat assembly combats this by permitting 90% of the engines oil to bypass the cooler during warm up. The balance of the oil flow is allowed to fl ow through the cooler maintaining constant pressure and preventing air pockets while eliminating cold oil shock. This reduces scuffing and premature wear and inhibits engine blow-by. As engine oil temperature reaches its optimum operating temperature moisture and impurities that often cause a milky condition are eliminated.
Until now oil temp was controlled either by some guess of components or by the professional engine builders through the use of some sort of external engine oil thermostat. While these external oil filter/ thermostats were very effective they were also very large and very bulk . Making them hard to mount and creating a maze of plumbing. The problem was the only available parts up until now couldn’t move the necessary oil fl ow to be mounted anywhere. else. But thanks to Hardin marine and their engineering staff they took to solving this decade long nuisance. Hardin Marine has developed this new thermostatically controlled engine block mounted product. With this unit all oil temperature is now controlled through a integral 212 degree oil thermostat. The large 3/4NPT oil inlets/outlets assure the maximum amount of oil can be fl owed through the unit. So no more maze of external plumbing, no more big bulky external mounted components just the standard (2) lines to the filter and the standard (2) lines to your cooler. Sometimes evolution comes in the form of the simplest of things but this is one that has been deeply sought after. Overall Height: 4-3/4"
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300-16876 Big Block Chevy Gen 5 & 6 1-piece Rear Main Seal- Sold Each
These excellent rear main seals are designed to replace worn, deteriorated
original equipment seals and provide years of trouble free service
Sold Each
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This Part has options, please click the button below to order.
420-9105 + Option(s) Big Block Chevy Gen 5/6 "XS" Series Offshore Oil Pan - (Pan, oil
pick-up & windage tray only)
The
"XS" Xtreme Series 4-5/8" stroker oil pans are competition tested
and race proven. They out perform all other pans available. Each pan
starts out jig formed and precision TIG welded, then an exclusive race proven
windage tray is added which prevents oil foaming and crankshaft windage, which
helps to build more horsepower. Next a high volume oil pump pick-up with a
support bracket is added. The entire pan is coated with a hardened
aerospace epoxy to resist stains and corrosion. Designed to clear most
front style engine mounts including MerCruiser. A simple comparison of
available marine oil pans clearly points out Hardin Marine oil pans are boat
lengths ahead of all other oil pans. Run what leading racers worldwide
already use - the Hardin Marine "XS" Xtreme Series offshore oil pan.
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This Part has options, please click the button below to order.
620-9105 + Option(s)
- Extra Large 10 qt. (8.9" Deep), 12 qt. (10" deep) pans and 14 qt (10.18" deep)
- Pan rear support spacers provided added clearance to mounting fasteners.
- 1/4" NPT threaded flexible dipstick provides a leak proof seal between dipstick and pan.
- Heavy duty pan rails are notched to allow 4-5/8" stroke rotating assemblies.
- "T" bottom style offers additional oil capacity storage for constant supply to the engine oil pickup.
- Zinc plated one-piece windage tray and crank scraper prevents oil foaming, building more power than other brands.
- Highly flexible dipstick allows accessibility around engine mounts and exhaust systems.
- Oil relief in kick out allows added room for long filters and sandwich adapters.
- Fully gusseted high-flow oil pick-up included.
- Includes mounting bolt kit.
- Welded for durability.
- 1/2"-20 drain plug.
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620-52007 Stainless Steel Bolt Kits - B/B Chevy Gen 5/6 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 o
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300-17937 Big Block Chevy Gen 6 O-ring Xtreme Marine Seal™ Valve Cover Gasket- Sold in Pairs
There is nothing more frustrating than a leaking valve cover seal, so don't settle for anything less than the best. That's why professional engine builders nationwide demand Xtreme Marine Seal valve cover gaskets. Produced from a blend of polymer and cork to provide a gasket that will last.
Sold in Pairs
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620-52003 Stainless Steel Bolt Kits - B/B Chevy Gen 6 Timing Cover Bolt Kit
We offer a full selection of manifold bolt kits to fit most popular marine engines. These kits come complete with the correct numbe
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300-17870 Big Block Chevy Gen 6 Timing Cover O-ring- Sold Each
These Hardin Marine Sea
timing/front cover gaskets are designed to exceed all original equipment
specifications. Each gasket is precision die-cut for a perfect fit
every time.
Sold Each
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421-205 Big Block Chevy Generation 5 Sea Pump Pulley (Needs Mandrel To Mount) All Hardin Marine sea pump pulleys for Gen 4 & 5 V-groove belts use a mandrel on the pump, then the pulley bolts to the mandrel. Some manufacturers sell you a press-on pulley, these usually work themselves off. Pulley has the diameter of 5.5".
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