This tool is used for adjusting the clearance between the brake master cylinder piston and the brake booster push rod on the front of the power booster. This is a new in the box power brake booster depth gauge.
OEM 53-2683 Power Brake Booster 1999-2005 Volkswagen Jetta
Power Brake Booster Master Cylinder Push Rod Gauge Pin Adjustment Tool NEW N5G1
Power Brake Booster Master Cylinder Push Rod Length Gauge Tool Adjustment Pin
Power Brake Booster Master Cylinder Push Rod Length Gauge Adjustment Tool Pin
Power Brake Booster Master Cylinder Push Rod Gauge Length Pin Adjustment Tool