Caterpillar 1326881 Cylinder Liner PAI 361612CROSS REFERENCE: 132 6881 1326881 420 2631 4202631 473 9034 4739034 APPLICATION: Caterpillar 3406E C15 C16 C18 Multiple Use Application. BRAND: PAI 361612 Caterpillar 1326881 Cylinder Liner PAI 361612. Truck parts and diesel parts. Supports piston movement and maintains stable engine function. All components are proudly manufactured in the U. S. A. by PAI Industries Inc., an ISO9001 certified company with over 50 years of experience in the heavy duty