L5P/L5D Boost Leak Tester Plate

SRF L5P Duramax Boost Leak Tester Plate

Take the guesswork out of tracking down boost leaks with the Square Root Fabrication L5P Boost Leak Tester Plate. Designed for the 2017–2026 6.6L L5P Duramax, this plate provides a simple way to pressurize the intake/charge-air system so you can locate leaks before they cost you boost, power, or consistency.

Machined from billet aluminum, the tester features an O-ring sealing surface for a reliable seal and a built-in air fitting for connecting your regulated shop-air supply. Simply install the plate, introduce controlled air pressure, and check the charge pipes, boots, intercooler, fittings, and connections for leaks.

Features:

• Fits 6.6L L5P Duramax applications
• CNC-machined billet aluminum construction
• O-ring sealed design
• Integrated air-pressure fitting
• Helps locate hard-to-find boost and charge-air leaks
• Reusable shop diagnostic tool
• Made by Square Root Fabrication

Perfect for: performance shops, diesel technicians, racers, and L5P owners troubleshooting low boost, boost-pressure loss, excessive smoke, or inconsistent performance.

Important: Always use a regulated air supply and start at low pressure. Do not exceed the safe pressure rating of the intake/charge-air components being tested.