Sealed Power SPG-1 Plastigage is a must-have tool for engine builders, mechanics, and DIY enthusiasts needing precise bearing clearance measurements. This green-coded plastigage strip measures clearances from 0.001 to 0.003 inches, providing a fast, accurate, and affordable way to check main and rod bearing clearances during engine assembly, rebuilds, or inspections. Simply lay the strip across the bearing journal, torque the cap, remove, and compare the flattened width to the scale on the package—no special tools required. Made with innovative, high-quality plastic materials and ISO/QS-certified manufacturing, it delivers reliable results every time to help avoid costly engine issues.

Features & Benefits

• Accurate clearance measurement range of 0.001" to 0.003" with green-coded strip for easy identification
• Quick, precise method to check main and rod bearing clearances before final assembly
• Flattens evenly for consistent, reliable readings using leading-edge plastic material
• 12-inch length for convenient handling and multiple uses per strip
• Innovative design manufactured to ISO and QS certification standards for superior quality
• Ideal for engine rebuilds, performance upgrades, and professional or home garage use
• Sold as single strip in protective calibrated envelope