RV Camper Furnace Blower Motor Kit for 233043 Suburban SF-42Q, SF-42FQ 2730 RPM. NBK Products Number 20563. Suburban Furnace Blower Motor Kit. 12V DC Motor 55W 2730 RPM. 2-5/8″ x 5/16″ x 1-7/8 shaft. 2 mounting bolts on short shaft side. 2 wire with female insulated terminals. Designed to fit specific manufactured Suburban furnace makes and models including 233043, SF-42Q, SF-42FQ, SFV-42Q, SFV-42FQ, 521232. Designed to fit specific manufactured Suburban furnace makes and models including 233043, SF-42Q/42FQ, SFV-42Q/42FQ, 521232. Check out my other items.