This is a A-PBK580 Planetary Brake Kit PN: PBK580Main Description As Following : A-PBK580 Planetary Brake Kit P.N: PBK580 Includes: (7) A-R48236 (4) A-R48235 (11) A-RE17162 (1) A-R77671 (3) A-R57345 (4) A-AR94516 (10) Piston Seals Found in Section & Models : Transmission & Rear Axle > Trans Related Parts, John Deere TRACTOR: 4440 (SN 027784->) Associated Items : New Also A-JD-O-OMR65461, A-JD-S-TM1182, A-SMJD202 And : Includes: (7) A-R48236 (4) A-R48235 (11) A-RE17162 (1) A-R77671 (3) A-R57345 (4) A-AR94516 (10) Piston Seals