Omix has all the parts and components you need to keep you Jeep's A/C and heater system functioning at its very best. With quality you can trust from a company that lives and breathes Jeep. This replacement 3-speed heater blower motor fits 78-83 CJ5, 78-86 CJ7, 81-86 CJ8 Scrambler and 87-90 Wrangler YJ models with 3.15-inch diameter hole in the firewall. Motor mounting plate measures 6.75-inches diameter while the housing measures 3.125-inches diameter. For firewall to blower motor seal, use 17908.02. Replaces OE 4761520