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- in. 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

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