Engine parts must be able to operate under incredible stresses and extreme temperatures. Caterpillar^® engine parts are designed and manufactured to work hard as a complete system and be rebuilt for a second life. The care and precision that go into manufacturing may not be visible to the naked eye, yet, test after test identifies critical differences between Cat^® engine parts and competitive parts. Design and manufacturing techniques are continually improved to ensure you get state-of-the-art new and remanufactured parts every time.