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Return to Parts List Category : D- Big Block (Low Deck) : Pulley Kits & Accy MPP 40545 383-400 DELUXE STYLE SERPENTINE BELT KIT $855.99 CHRYSLER Big Block 383-400 C.I. Kit # Drives Alternator A/C Water Pump Saginaw Keyway P/S Pump Saginaw Press Fit P/S Pump Alternator Belt Size P/S & A/C Belt Size 40545 yes yes yes - yes 42.5” - Tired of losing accessory drive belts? March Performance is very “trick” looking 1” wide serpentine belt drive system that simply swaps out with your old low performance v-belt pulleys. Not only will they eliminate belt throwing, March high water flow ratio pulleys improve cooling.  Matching “high performance” brackets with stainless steel tensioning rods for perfect belt tensioning.These high performance pulleys and brackets are precision CNC machined from solid billet 6061-T6 aluminum, polished and then clear powder coated for a “no polishing” maintenance-free finish.  Kit Includes: Alternator bracket and tensioning rod Crank pulley, water pump pulley and nose cover Alternator pulley with nose cover Power steering kit includes bracket, tensioning rod and pulley Air conditioning kit includes A/C bracket, tensioner and nose cover NOTE: Big Block Mopar brackets kits require that your engine have a thermostat housing in which the bolt holes run parallel to the radiator.