Cat engine parts work as a system to deliver reliable performance and long life. Engine parts must endure incredible stresses and extreme temperatures - so Caterpillar continually improves its design and manufacturing processes to ensure Cat engine components work hard as a complete system and can be remanufactured for a second life. In fact, test after test identifies critical differences between Cat engine parts and competitive parts - differences that allow Cat engine components to improve engine performance, increase machine productivity, and reduce your owning and operating costs. Terra Cat can provide you with heads, valves, gaskets, liners, rings, pistons, bearings, crankshafts and fuel injectors, as individual piece parts or in kit form. We offer engine parts that are designed by Caterpillar engineers to work and wear as a whole system, to deliver the productivity and efficiency you expect from your Cat® equipment.