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    • COOLING SYSTEM COMPONENTS

    An inboard engine cooling system works by keeping your boat's engine from overheating. It also ensures that it's operating at its best and at peak efficiency. Because of this, it's important to keep your inboard motor cooling system maintained and updated. After all, it's the lifeblood of your boat's engine. At Discount Inboard Marine, we carry a wide selection of inboard cooling system parts and accessories. You'll find everything from impellers and raw water pumps to gaskets and circulation pumps. Shop Discount Inboard Marine today to keep your inboard engine cooling system running right.

    • T-STAT KIT, 142 MERC CARB
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      T-STAT KIT, 142 MERC CARB

      1981 Up Standard Cooling with cast iron housing (Not for EFI engines)5.7L GM IB, Beg #B522506 End #B525981.5.7 GM Ski, Beg #A338553 End #B514626.Mercruiser T-stat # 59137   Make sure to use the Mercruiser style thermostat and not an automotive...
      $45.05
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    • CIRC PUMP SB GM 350, 305, 5.7 CIRC PUMP SB GM 350, 305, 5.7
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      CIRC PUMP SB GM 350, 305, 5.7

      Includes gaskets (Not for LT1 Engines) Bi rotational LH or RH GM engines Fit PCM or Indmar, Indmar PT # 55-1045. Bi-Rotational Circulating Pump This pump is centrally located on the front of the engine. Its most common problems are bearing or...
      $137.88
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    • ENGINE CIRCULATING PUMP - FORD ENGINE CIRCULATING PUMP - FORD
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      ENGINE CIRCULATING PUMP - FORD

      Includes internal/external gaskets and backing plate, bi-rotational water pump fits 302 AND 351 Ford PCM AND Indmar engines (left OR right hand). This pump has 2 mounting holes that are normally not used, the block off plate eliminates any leaks...
      $148.88
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    • THERMOSTAT HSG KIT, NMR GM THERMOSTAT HSG KIT, NMR GM
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      THERMOSTAT HSG KIT, NMR GM

      New style GM housing (3 bolt). 1998 and up MPI (exception being some TBI used old triangular style housing thru 2002). Bin Number (ISBN): 30712              Base gasket sold separately (click...
      $220.99
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    • THERMOSTAT W/G 160 DEGREE PCM FORD & GM
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      THERMOSTAT W/G 160 DEGREE PCM FORD & GM

      Thermostat Kit 160 Degree PCM Ford and GM (after 1998 for GM) Includes both Catalyst and Non Cat 5.7 gaskets RAW WATER COOLED WITH GASKETS For Ford and GM EFI engines. The 160-degree Thermostat is recommended for Ford fuel injected engines. THERMOSTATS...
      $46.53
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    • Sherwood Raw Water Pump Crank Driven RA057026 Sherwood Raw Water Pump Crank Driven RA057026
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      Sherwood Raw Water Pump Crank Driven RA057026

      PCM/SEAMAXX (P-105) Late 90's Up To 2004 not for 8.1L (will work for 8.2L). This premium high-performance pump replaces the standard GM, Indmar, and Johnson Pump providing double bearings and double lip seals for years of trouble-free service and optimal...
      $527.83
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    • RAW WATER PUMP/BELT DRIVEN 02/03 RAW WATER PUMP/BELT DRIVEN 02/03
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      RAW WATER PUMP/BELT DRIVEN 02/03

      PCM 5.0L & 5.7L FROM 2002-2003 THAT HAVE A BELT DRIVEN PUMP. NOT FOR 6.0L OR ENGINES WITH THE CRANK DRIVEN PUMP. USES ITEM #0713 IMPELLER. ALSO USES SEAL AND SEAT ITEM #32911. OEM SHERWOOD WAS P1012, THEN P1014 AND NOW P1015.   Bin Number...
      $925.75
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    • KIT, MAJOR REPAIR FORD G-21 R/W PUMP
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      KIT, MAJOR REPAIR FORD G-21 R/W PUMP

      Fits PCM Ford G-21 Sherwood Pump. This major repair kit includes Front bearing housing with bearings, seal/seat, and pressed on pulley. Does NOT include wear plate gasket CLICK HERE or impeller O-ring CLICK HERE. If your pump is from the 70's or early...
      $395.75
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    • R/W PUMP SEAL-SHERWOOD GM
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      R/W PUMP SEAL-SHERWOOD GM

      Crank Driven Pump PCM GM Sherwood P105, also fits Sherwood P151 pumps. Is your Sherwood pump leaking? Replace your Seal today. WILL NOT FIT INDMAR JOHNSON PUMPS, USE PT# 68-5004K       68-5004K       Bin Number...
      $16.85
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    • GSKT WATER/PUMP TO BLOCK 305/350
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      GSKT WATER/PUMP TO BLOCK 305/350

      GSKT WATER/PUMP TO BLOCK 305/350 Sold Individually.  Marine gaskets are highly recommended over standard automotive gaskets for top efficiency, safety and performance! Minor wear, warpage and corrosion are a fact of life on marine engine surfaces...
      $7.44
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