Country of Origin: United States , Package Dimensions: 17., 018 cms (L) x 17., 018 cms (W) x 3., 81 cms (H) Front Crankshaft Seal Kit Caterpillar C10 /C12 /C13 application National Brand Engine Crankshaft Oil Seal Replacement Part Engine Crankshaft Seal Oil - Front 4.0L | Parts OEM Crankshaft Seal Replacement NATIONAL ENGINE CRANKSHAFT SEAL. Part #: 5723. Selected Option: NATIONAL ENGINE CRANKSHAFT SEAL. Add to list. $47.34. National® has built a reputation as one... Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles. National 711127 Engine Crankshaft Seal : Aazon.in National has built a reputation as one of the most respected names in the industry.