Response to Hi, Chawn this would be the proper replacement motor for your B129 but to determine the impeller you require then we would need to know the make and model of your pump. Could you send us a few photos showing a wide shot of your complete pump to include where the pipes come in and out of the pump? Also, could you supply some photos which show both your pump and filter as this would help us suggest a filter as well? You can simply reply back to this email with your photos.

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