The Eaton Fuller Oil Muff, part number 8874921, is a genuine OEM manual transmission component. Oil muffs are internal transmission parts that direct or retain lubrication flow within the gearbox, helping maintain proper oil distribution across rotating components. This part falls under Eaton’s manual transmission gear category, making it applicable to Fuller-series transmissions that use this style of lubrication management. Call us to confirm proper fit for your specific transmission model before ordering.Interchanges:HF8874921FeaturesGenuine Eaton Fuller OEM partPart number 8874921Manual transmission lubrication componentSold individually (each)Sold by Pro Gear and TransmissionUsed in this Eaton Fuller modelFS-V8209A-RH