Side Entry Billet Remote Cooler Sandwich Adapter - Generation 4 BBC 

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.