Thanks for your question Benny, and we apologize for the delayed response.
No, this Cast Iron Fan Motor is not comparable for your SP48-12 model. You'll want Beverage Air part #501-087B. We do not currently stock this part, but we special order for customers on a daily basis. Please give a member of our Tundra Restaurant Supply team a call at 1-888-388-6372, and we'll be happy to get you the part you need.