Sandwich Adapter For Oil Filter

The sandwich adapter for oil filter is a compact manifold solution designed for engine builders, performance shops, and DIY enthusiasts who need remote oil filtration or auxiliary oil system plumbing. This adapter threads directly onto a standard oil filter boss, allowing you to distribute oil flow to multiple destinations—whether for turbocharger feed lines, external coolers, or pressure gauges—without drilling into the block or head. Its compact footprint and aluminum construction make it ideal for tight engine bays where space is at a premium.

Engineered with a ¾-16 inch center thread, the sandwich adapter for oil filter accepts standard spin-on or cartridge filter housings at its core. Both the inlet and outlet ports are ¾-inch NPT female, providing flexibility in hose sizing and component selection. The natural aluminum body resists corrosion while remaining lightweight, and the dual-port design allows unrestricted oil flow while supporting multiple accessory feeds simultaneously. This configuration eliminates the need for secondary drilling or tapping, preserving engine integrity and reducing installation complexity.

This adapter benefits street cars, race engines, and custom builds that demand modern cooling or monitoring systems. Turbocharger owners frequently use sandwich adapters to route pressurized oil from the filter boss directly to turbo bearings without sacrificing lubrication flow to the rest of the engine. Installation requires only removal of the factory filter, threading the adapter onto the existing boss, and routing ¾-inch NPT hose to your chosen accessories. Verify engine block threading before ordering to ensure compatibility with your ¾-16 inch center thread specification.