Oil Pan Gasket Set - BBC Gen-4 Notched Side Rail

The MAHLE ORIGINAL/CLEVITE Oil Pan Gasket Set for BBC Gen-4 Notched Side Rail (part number OS32512) is a precision engine seal designed for big-block Chevy applications requiring OEM-level reliability. This multi-piece gasket kit combines steel-core construction with PTFE coating to deliver a durable, low-leak seal across extended service intervals. The notched side rail geometry accommodates Gen-4 block variations while the trimmed design ensures proper fitment without interference.

Built to 0.08-inch thickness, this gasket set meets the pressure and temperature demands of high-output big-block engines. The PTFE-coated fiber facing resists oil degradation and thermal cycling, critical for engines running hard under sustained load. The steel-core composition provides structural integrity to prevent blow-out even under high manifold pressure. Multi-piece design allows technicians to replace individual sections without unnecessary component removal, reducing labor time during gasket service jobs.

This kit addresses the common challenge of oil pan sealing in Gen-4 BBC applications where side rail geometry changed significantly from earlier generations. The notched profile accommodates the revised block casting while maintaining full surface contact. Technicians working on big-block restorations, performance builds, and routine maintenance rely on OEM-equivalent gaskets like this to avoid comebacks and oil seepage that can compromise engine bay cleanliness and component longevity.

MAHLE ORIGINAL gaskets are manufactured to strict OEM specifications and represent the engineering standard against which aftermarket competitors are measured. Choosing genuine specification gaskets eliminates guesswork during engine assembly and repair, ensuring compatibility with original equipment geometry and performance parameters.