Complete pump assembly for Jabsco 29090 and 29120 toilets. This pump assembly will convert your old style 29090 and 29120 toilet to the new Twist n Lock style toilet. The Twist 'n' Lock action handle guards against syphonic flooding and waste backflow. With one easy 90° turn of the handle, the lock is applied. Turning the handle back to the natural operating position opens the lock again. Base and Bowl not included.