Durable to use and built to last. Caterpillar Diesel Tools for sale | Apex Tool Company International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Aazon.co: 7040 Diesel Piston Ring Copressor 5.4 Bore Tool for Alternative To PT-7040 5394454 7040 Tool For Cummins ISX, Caterpillar 3400, And C-15 5.4" Bore Same As PT-7040 (Black Piston Ring Compressor Surface with bright red paint coated can prevent the tool from corrosion and rust. Aazon.co: Caoo 7040 Diesel Piston Ring Copressor Tool 5.4 Bore For... Fits Cummins ISX QSX 15 and Caterpillar 3400, 3406, 3408, C15 engines like a glove Superior Material Premium grade high quality Cast Steel with high rigidity, solid and sturdy. Upgrade Design Removing and installing the piston ring with ease and quick on Cummins ISX/QSX 15, Caterpillar 3400 and C15 5., 4 bore.