Filter By-Pass

The TRANS-DAPT Filter By-Pass adapter (SKU TRA1013) is an oil filter bypass solution engineered for engines requiring auxiliary oil circulation and pressure relief. This aluminum adapter is essential for high-performance and modified engines that benefit from independent oil filtration circuits, allowing unfiltered oil to bypass the main filter element under specific pressure conditions. Whether you're building a street performance engine, restoring a classic vehicle, or maintaining fleet equipment, a bypass adapter protects against filter clogging while preserving oil flow to critical engine components.

Constructed from durable aluminum, this bypass adapter features a 3/4-16 inch center thread connection point with dual 1/2 inch NPT female ports for inlet and outlet lines. The threaded design enables secure mounting on engine blocks or filter head assemblies, while the NPT ports accept standard hydraulic hose fittings or rigid tubing commonly found in motorsport and industrial applications. The compact footprint—measuring 4.8 x 3.3 x 5.15 inches and weighing just 0.65 lbs—integrates cleanly into engine bays without consuming excessive space, making it ideal for tight installations on various engine platforms.

This bypass adapter suits engine builders, performance enthusiasts, and technicians working on systems where oil pressure regulation and multi-circuit filtration are priorities. Installation typically involves mounting the adapter to a suitable engine location and connecting inlet and outlet lines to the oil circulation system—no special tools required beyond standard wrenches and fittings. Verify threaded port compatibility with your existing oil lines and engine block specifications before ordering to ensure proper fit and function in your application.