OEM-spec Part No. 4898301 Oil Suction Connection Gasket is purpose-built for Cummins 4B, 6B and QSB5.9 series diesel engines. Manufactured from high-quality, oil-resistant composite material with precision-cut bolt holes and sealing edges, it delivers exceptional compression resistance and leak-proof performance, ensuring a reliable seal between the oil suction pipe and engine block, preventing oil leaks and maintaining consistent lubrication.