625-7703 Big/Small Block Chevy Gen 4 Thermostatically Controlled Engine Block Adapter
Thermostatically Controlled Engine Block Adapter Gen 4 BBC / SBC
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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240-98-002
- Designed to fit 240-22-580 and 240-22-584 Oil Adapters.
- Kit Includes 4 O-Rings.
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625-7912
- Designed to fit 625-7916 Gen. 5/6 Oil Adapter.
- Kit Includes 3 O-Rings.
- Note: Picture is example of O-Rings, not actual product.
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625-1122 Replacement O-Ring used in Hardin Marine Oil Filter Adapters and other applications. Used in:
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625-7763 Replacement inlet fitting for Hardin thermostatic oil adapters, 625-7703, 625-7704.
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625-7914 Xtreme High Flow 3/4" NPT Side Inlet Oil Block Adapter - Side Inlet Gen 4
BBC & SBC
This Hardin Marine Designed engine oil adapter is the preferred choice of respected engine builders worldwide. Manufactured from 6061-T6 billet aluminum, these adapters provide large 3/4" NPT horizontal side inlets and outlets while providing easy access for leak-proof operation. The black hard anodized finish is attractive while providing corrosion protection.
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240-22-542 Side Entry Billet Remote Cooler Sandwich Adapter - Generation 4 Big Block Chevy
These unique adapters are used when a filter is desired to be used in a block
mounted fashion. This unit lowers the original filter location by
1-1/2" while providing 1/2" NPT inlets and outlets. The factory
oil bypass is eliminated in this situation.
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 6061-T6 billet aluminum and then beautifully anodized for
superior corrosion resistance in harsh environments. They are completely
O-ringed on the sealing surfaces to eliminate oil leaks, copper sealing washers
are NOT used under the mounting bolt heads.
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625-7918 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.
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240-22-580 Bottom Entry Billet Engine Oil Block Adapter - Small Block & Gen 4 Big Block Chevy includes Merlin Blocks
These machined billet aluminum bypass plates are needed when using a remote oil filter. O-rings are captured in the plate for a tight seal against the block surface, and are installed under bolt heads for leak-free performance. Drilled and tapped to accept 1/2" NPT fittings. Includes all mounting hardware.
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 6061-T6 billet aluminum and then beautifully anodized for superior corrosion resistance in harsh environments. They are completely O-ringed on the sealing surfaces to eliminate oil leaks, copper sealing washers are NOT used under the mounting bolt heads.
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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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625-7916 Xtreme High Flow 3/4" NPT Side Inlet Oil Block Adapter - Gen 5/6 BBC
This Hardin Marine designed engine oil adapter is the preferred
choice of the most respected engine builders worldwide. Manufactured from
6061-T6 billet aluminum, these adapters provide large 3/4" NPT horizontal
side inlets and outlets while providing easy access for leak-proof
operation. The black hard anodized finish is attractive while providing
corrosion protection.
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240-22-584 Bottom Entry Billet Engine Oil Block Adapter - Generation 5/6 Big Block Chevy
These machined billet aluminum bypass plates are needed when using a remote
oil filter. O-rings are captured in the plate for a tight seal against the
block surface, and are installed under bolt heads for leak-free
performance. Drilled and tapped to accept 1/2" NPT fittings.
Includes all mounting hardware.
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 6061-T6 billet aluminum and then beautifully anodized for
superior corrosion resistance in harsh environments. They are completely
O-ringed on the sealing surfaces to eliminate oil leaks, copper sealing washers
are NOT used under the mounting bolt heads.
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740-23688 GM LS Series Remote Oil Filter Adapter
- Replaces Moroso Spin-On oil filter adapter on Moroso #'s 20142, 20143 & 20151 oil pans, comes standard on Moroso # 20146 oil pan.
- Ideal when chasis restrictions don't allow the use of block mounted filter or when a larger external filter is desires.
- Billet aluminum construction
- -10 AN "In" and "Out" ports
- Includes mounting hardware and engine block sealing O-Rings
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240-22-632 GM LS Series Remote Oil Filter Adapter - 90 Degree
This billet aluminum adapter is designed to install under the pan rail of LS1 pans and provide inlet and outlet ports for installing lines to a remote oil filter. Adapter features o-ring seals between the pan and the adapter and 1-1/16" -12 AN oil inlet and outlet ports.
- 1/2 NPT Inlet and Outlet
- Ports are set at 90 Degrees
- Lightweight Billet Design
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625-4526 GM LS Series Remote Side Mount Oil Filter Adapter
Earl's billet side mount oil cooler adapters are the slick way to add an oil cooler to your GM LS or Gen-V LT engine. The slim design of these adapters clear most headers and other components and feature -10 AN male connections. These adapters are black anodized and use O-Ring seals for a leak free installation. Fits OEM & Holley Wet Sump oil pans only (Does not Fit Dry Sump Engines).
- Billet Aluminum w/ Black Anodized Finish
- Includes 0-Ring Seal & Hardware
- (2) 1/8” NPT Accessory Ports
- -10 AN Male Connections
- Available w/ 180 Degree Thermostat
- Add an Earl’s Oil Cooler and AN Plumbing to Complete the Installation
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240-22-460 Bottom Entry Billet Engine Oil Block Adapter - 460 Ford
These machined billet aluminum bypass plates are needed when using a remote
oil filter. O-rings are captured in the plate for a tight seal against the
block surface, and are installed under bolt heads for leak-free
performance. Drilled and tapped to accept 1/2" NPT fittings.
Includes all mounting hardware.
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 6061-T6 billet aluminum and then beautifully anodized for
superior corrosion resistance in harsh environments. They are completely
O-ringed on the sealing surfaces to eliminate oil leaks, copper sealing washers
are NOT used under the mounting bolt heads.
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625-7766 Replacement inlet fitting for Hardin thermostatic oil adapters 625-7703 and 625-7704.
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625-7911
- Designed to fit 625-7914 Gen. 4 Oil Adapter.
- Kit Includes 6 O-Rings.
- Note: Picture is example of O-Rings, not actual product.
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625-7706 This handy kit contains all the o-rings to rebuild Hardin Thermostatic oil adapters 625-7703 and 625-7704 .
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625-7768 Washer, Crush Oil Adapter, Gen 2
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