The 370-1940 CA3701940 Cylinder Seal Kit is a high-quality aftermarket part designed specifically for Caterpillar excavators such as the E365B, 374D, 385C, and 390F. Made in China, this seal kit includes all necessary components to ensure a secure seal for your heavy equipment. Caterpillar owners can trust in this aftermarket product to keep their machinery running smoothly and efficiently.