Achieve Perfect Calibration in 4 Simple Steps

Incorrect push rod length leads to spongy or dragging brakes. Our tool's clear "Master Cylinder" and "Brake Booster" markings guide you through a precise measuring process. Just slide the center pin to gauge the depth, lock it, and transfer the measurement to adjust the booster pin for an exact fit.

Smart Magnetic Design for Hands-Free Ease

Working in a cramped engine bay can be frustrating. The "Brake Booster" end of this tool features built-in magnetic cores that firmly attach to the metal booster surface. This holds the gauge steady, freeing up your hands for easier, more accurate adjustments.

Premium Materials Built for the Garage

Don't settle for flimsy plastic tools. The main body is constructed from high-quality aluminum alloy with a durable anodized finish, while the center push rod is made from solid 304 stainless steel. It's designed to resist rust, corrosion, and deformation for years of reliable service.

This tool is designed to be universal and will fit most brake boosters that have an adjustable push rod pin. It is compatible with a wide range of vehicle makes and models from the 1960s to modern era.

The magnetic cores embedded in the legs of the tool allow it to stick firmly to the metal surface of the brake booster or master cylinder flange. This keeps the tool in place so you don't have to hold it while you adjust the center pin.

Yes, the silver center pin slides up and down to take the measurement. Once you have the correct depth, you can lock it in place using the black knob in the center of the tool to preserve the reading.