Sparex source: https://us.sparex.com/sparex-four-bolt-flanged-unit-ucf207-20-18544.html Product: Sparex Four-bolt Flanged Unit (ucf207-20) - Sparex S.18544 SKU: S.18544 Listing note: ID: 1-1/4'' Detail enrichment pending: OEM cross references, fitment, catalog pages, and full specifications.