The Dana Spicer 2021013-1 or 20210131 is an axle shaft oil seal designed for the Dana 35 AdvanTEK axle as used in the Jeep JL platform. This seal keeps axle lubricant contained at the shaft exit point, helping prevent contamination of brake and wheel-end components. Sold by Pro Gear and Transmission as a genuine Spicer component. Call us to confirm proper fit for your specific axle configuration before ordering.Interchanges:SB2021013-1FeaturesGenuine Dana Spicer axle shaft oil sealPart number 2021013-1 or 20210131Designed for Dana 35 AdvanTEK axle – Jeep JL applicationSold individually (each)Sold by Pro Gear and TransmissionTech SpecsPart Number: 2021013-1 or 20210131Application: Dana 35 AdvanTEK Axle – Jeep JLType: Axle Shaft Oil SealUPC: 00023913742256