The ATC 7030 Piston Ring Compressor is a precision clam-shell style installation tool designed specifically for use with the Caterpillar 3306 engine family (4.75″ bore). Built in the USA and engineered to the exacting specifications of the original OEM tool number PT-7030, this compressor ensures safe and effective piston installation while protecting ring gaps, bore finishes, and liner or sleeve surfaces.
In heavy-duty rebuild environments, piston and ring installation require tools that maintain alignment, avoid ring damage, and promote first-pass success. The ATC 7030 delivers this by providing consistent compression of piston rings and guiding pistons into the cylinder bore smoothly. Ideal for engine rebuilders, remanufacturers, and fleet service operations working with Cat 3306 blocks, this tool helps reduce downtime, minimize damage risk, and maintain high-quality rebuild standards.
Key Features & Benefits
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Made in the USA for professional heavy-duty engine service.
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Compatible with Caterpillar 3306 4.75″ bore piston applications, replicating OEM PT-7030 dimensions and fit.
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Clam-shell design allows effective ring compression and safe piston insertion without ring breakage or bore scoring.
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Built for repeated shop use with heavy-duty materials and robust construction, helping to maintain quality and reliability in rebuild workflows.
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Supports fleet maintenance and remanufacturing operations by promoting accuracy, repeatability, and rebuild integrity when installing pistons and rings in Cat 3306 blocks.