Filter Adapter GM LT Spin-on Type

The Filter Adapter GM LT Spin-on Type is a precision bypass oil filter adapter engineered for General Motors LT-series engines, designed to integrate modern filtration systems into classic and performance platforms. Built for serious engine builders, restoration shops, and performance enthusiasts who demand reliable oil circulation management, this adapter serves as the critical link between your engine block and high-flow or custom filtration setups. Whether upgrading an LS or LT powertrain with advanced cooling or maintaining optimal oil cleanliness under extreme duty cycles, this component is essential for long-term engine reliability.

Manufactured by MOROSO and constructed from clear anodized aluminum, the Filter Adapter GM LT Spin-on Type features a 22 mm x 1.50 filter thread for universal spin-on cartridge compatibility, a 10 AN female inlet port for high-flow plumbing, and a 1/4 inch NPT female port for auxiliary gauge or line connections. The bypass design ensures continuous oil delivery even during filter saturation, preventing catastrophic engine starvation—a critical safety feature in high-performance or off-road applications where filter clogging risk is elevated. The compact 4.35 x 4.35 x 6.6 inch footprint and 1.5 lb weight allow flexible engine bay routing without compromise to cooling or access.

This adapter is ideal for LT-series platform swaps, restomod projects, marine and aviation conversions, and any application requiring custom oil management. Installation requires basic mechanical skill and compatible AN and NPT fittings; ensure your filtration lines and gauge ports match the stated thread sizes for leak-free operation. Verify engine block boss location and clearance before purchase to confirm fit within your specific build envelope.