Fel-Pro BS40673 is a 1-piece rear main seal gasket for 2001-2007 Chevy and GMC vehicles with the 8.1L V8, including 496cid heavy-duty truck applications. It replaces the rear crankshaft sealing gasket to help control oil leakage at a repair point that often sees imperfect sealing surfaces, making it a practical choice for stock rebuilds and street-driven service work.

Fel-Pro BS40673 Features:

• 1-piece style rear main seal gasket is built as an OEM-style replacement for engine crankshaft seal service.
• PTFE and rubber construction supports a dependable seal in the repair environment.
• Application-specific design is validated for fit, form, and function on the listed 8.1L V8 applications.
• Meets or exceeds original equipment specifications for a proper replacement fit.
• Intended for stock rebuilds and street-driven vehicles, not high-performance or race applications.

Includes:

• 1-piece rear main seal gasket

Fits select 8.1L V8 Chevy and GMC platforms such as Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, Sierra 3500, Suburban 2500, Yukon XL 2500, Avalanche 2500, Express 3500, Savana 3500, C3500HD, Kodiak C4500 through C7500, and Topkick C5500 through C7500. Some listings identify the engine as 496cid.