Bottom Entry Billet Engine Oil Block Adapter - SBC & Gen 4 BBC 

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.