MICHIGAN 77 MPG1-12 Plastigage Green .001in-.003in Bearing Clearance Gauge

The MICHIGAN 77 MPG1-12 Plastigage is a precision bearing clearance measurement tool designed for accurate oil clearance checking in engine assembly and rebuilding. This green-coded Plastigage measures clearances ranging from .001 inch to .003 inch (.025mm to .076mm), making it ideal for checking crankshaft bearings, connecting rod bearings, camshaft bearings, and other critical engine tolerances.

Key Features:

• Precision measurement range: .001" to .003" (.025mm to .076mm)
• Green color coding for easy identification of measurement range
• Simple to use - no special tools or equipment required
• Crush-and-measure design provides accurate clearance readings
• Essential tool for professional engine builders and mechanics
• Individually packaged strips for clean, contamination-free measurement

To use, simply place a strip of Plastigage across the bearing surface, install the cap to specified torque, remove the cap, and compare the flattened Plastigage width against the included gauge scale printed on the envelope. The width of the crushed material directly corresponds to the bearing clearance. This tried-and-true method has been the industry standard for precision bearing clearance measurement for decades, trusted by professional engine builders and automotive technicians worldwide.