Sparex source: https://us.sparex.com/muffler-pipe-68302.html Product: Muffler Pipe - Sparex S.68302 SKU: S.68302 Listing note: Extension Pipe - Horizontal, Replaces: 311050, Fits: 801, (4000 -65), Except Select-O-Speed Transmission Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.