Allison 4500RDSP, Transmission Assys, Component Number Description RSN NO REAR SUPPORT BRKT. 01-807 MAIN HOUSING HD/B500 02-629 W/O FILL TUBE, DIPSTICK, 05-601 MAIN SHAFT MODULE (WR) 08-797 1810 FLANGE, THREADED, W/DUST SHIELD 10-610 FRT SUPT & OIL PUMP (PTO) 14-1005 P1 PLANETARY MODULE 15-512 P2 PLANETARY MODULE (WR) 16-1739 4"SUMP,W/OLS 20-540 REAR RMT PROV 21-930 TC521 CONVERTER GROUP 25-546 ROTATING CLUTCH GROUP (PTO) 34-545 CONVERTER HSG MOD (PTO) 39-853 HD, REAR COVER, WR, NOT TACHO, 1BOLT, O/