Description

The Cummins Bottom Gasket Set C4089173 is a complete lower-engine sealing solution engineered to restore factory sealing integrity during bottom-end service and engine rebuilds. Manufactured to OEM specifications, this gasket set includes both front and rear crankshaft seals , ensuring leak-free operation and long-term durability in Cummins diesel engines . Bottom gasket sets are critical for sealing oil passages, crankcase interfaces, and rotating assemblies at the lower engine. The front and rear crank seals included in this kit are precision-molded from oil- and heat-resistant materials to withstand continuous rotation, vibration, and thermal cycling. Proper sealing at the crankshaft prevents oil leaks that can lead to contamination, belt damage, clutch issues, or loss of oil pressure. The C4089173 bottom gasket set is commonly installed during oil pan removal, crankshaft service, rear main seal replacement, in-frame overhauls, and complete engine rebuilds . Using a matched bottom gasket kit helps ensure consistent sealing across all lower-engine interfaces, reducing downtime and preventing repeat leaks. Trusted by diesel technicians, fleet maintenance teams, and professional engine builders, this set delivers OEM-level fitment and dependable performance in demanding operating conditions. Included Components Front Crankshaft Seal Rear Crankshaft Seal Lower-engine gaskets and seals