MRC4004 Freshwater Cooling Kit HALF SYSTEM 4 Cylinder Kit Merc & OMC, Off-Engine Half System means the block only is cooled. A full system means the manifolds are cooled as well.

MRC4006 Freshwater Cooling Kit HALF SYSTEM 6 Cylinder Kit Merc & OMC, Off-Engine Half System means the block only is cooled. A full system means the manifolds are cooled as well.

MRC4008 GM Front Mercruiser 454 -- 7.4L V Half System means the block only is cooled. A full system means the manifolds are cooled as well.

1. Econo-Kool is the most economical Heat Exchanger Kit on the market today. 2. Econo-Kool kits are specially designed for the “do it yourself” installer. 3. Order Part No. MRC4068F for small block engines to 350 C.I.D. Order Part No. MRC4008F for big block engines 500 C.I.D. Block & Manifold cooling for Chev engines; inboard, V-Drive, and stern drive. Especially designed to take advantage of low capacity raw water pumps used on stern drive engines. Small block engines use a heat exchanger that has a 4-inch diameter and is 25 inches long, four pass. Big block engines use a heat exchanger that has a 5-inch diameter and is 25 inches long, four pass. Installer must supply hose and blank gaskets. In some installations manifold fittings (pipe thread to hose) may be required. If you question the ability of your exhaust manifold to adapt to fresh water cooling, call our manufacturing facility for recommendations. The Heat Exchanger is designed to mount off the engine on an engine stringer across the front of the engine, or alongside of the engine. MRC4008F GM Front Mercruiser 454 -- 7.4L V Half System means the block only is cooled. A full system means the manifolds are cooled as well.

1. Econo-Kool is the most economical Heat Exchanger Kit on the market today. 2. Econo-Kool kits are specially designed for the “do it yourself” installer who supplies only the hose and hose clamps. 3. Order Part No.MRC4068 for small block engines to 360 C.I.D. Order Part No. MRC4008 for big block engines to 500 C.I.D. Purchasers should state make (Chev, Chrysler, Ford) and C.I.D. of engine to ensure correct size. Exhaust manifolds remain on raw water system. V6-V8 engines 262-305-360 CID, both Sterndrive (I/O) and inboard. Especially designed to take advantage of the low capacity raw water pumps used on sterndrive engines. This Econo-Kool system can be installed onto engines with high mounted alternators and/or v-drives. MRC4068 Small Block Engines to 360 C.I.D. This kit does not contain hoses and clamps. It is a hardware kit. There are two known problems with installing EconoKool V-6 & V-8 kits (#4068/4068F): 1. OMC V-6 & V-8 with top mounted alternator 2. Volvo V-6 & V-8 with fuel line connection to carburetor pointing forward over thermostat housing. These models do not allow our thermostat housing to be bolted to the intake manifold. Please ask your customer for this information when they order, and if they have one of these setups, call us before ordering as we have several alternative options. Half System means the block only is cooled. A full system means the manifolds are cooled as well.

1. Econo-Kool is the most economical Heat Exchanger Kit on the market today. 2. Econo-Kool kits are specially designed for the “do it yourself” installer. 3. Order Part No. MRC4068F for small block engines to 350 C.I.D. Order Part No. MRC4008F for big block engines 500 C.I.D. Block & Manifold cooling for Chev engines; inboard, V-Drive, and stern drive. Especially designed to take advantage of low capacity raw water pumps used on stern drive engines. Small block engines use a heat exchanger that has a 4-inch diameter and is 25 inches long, four pass. Big block engines use a heat exchanger that has a 5-inch diameter and is 25 inches long, four pass. Installer must supply hose and blank gaskets. In some installations manifold fittings (pipe thread to hose) may be required. If you question the ability of your exhaust manifold to adapt to fresh water cooling, call our manufacturing facility for recommendations. The Heat Exchanger is designed to mount off the engine on an engine stringer across the front of the engine, or alongside of the engine. MRC4068F Small Block Engines to 360-500 C.I.D.. This kit does not contain hoses and clamps. It is a hardware kit. There are two known problems with installing EconoKool V-6 & V-8 kits (#4068/4068F): 1. OMC V-6 & V-8 with top mounted alternator 2. Volvo V-6 & V-8 with fuel line connection to carburetor pointing forward over thermostat housing. These models do not allow our thermostat housing to be bolted to the intake manifold. Please ask your customer for this information when they order, and if they have one of these setups, call us before ordering as we have several alternative options. Half System means the block only is cooled. A full system means the manifolds are cooled as well.

MRC4800 3.0 L, 4 Cylinder, Chev Half System means the block only is cooled. A full system means the manifolds are cooled as well.

MRC4802 Freshwater Cooling Kit HALF SYSTEM Block Only Merc Chevy Based V8 Engines 305 – 350 C.I.D. Stern Drives from 1986-1995 Half System means the block only is cooled. A full system means the manifolds are cooled as well.

MRC4804 Half System Block Only Mercruiser Chevy (Big Block) 7.4 L V-Belt Only; No Serpentine Belt; Stern Drives 1986-97 This kit is designed for Mercruiser Chevy Based 454 C.I.D. stern drives from 1986 thru 1995. Especially designed for stern drive engines. Heat exchanger has high efficiency four pass design.

MRC4806 Freshwater Cooling Kit HALF SYSTEM Block Only Merc Chevy Based V8 Engines 305-350 C.I.D. Stern Drive Serpentine Belt 1997-2001 Carbureted; *2001 need photo of engine This freshwater block cooling kit is designed for Mercruiser Chevy Based V6 - V8 engines 262 - 305 - 350 C.I.D. stern drives from 1997 thru 2001. Especially designed to take advantage of the low capacity raw water stern drive pumps used on stern drive engines. Heat exchanger has high efficiency four pass design. Half System means the block only is cooled. A full system means the manifolds are cooled as well.

MRC4808 Freshwater Cooling Kit HALF SYSTEM Block Only Merc 4.3, 5.0, 5.7 L Carbureted Engines, Serpentine Belt; Stern Drive, 2002 – 2010 Half System means the block only is cooled. A full system means the manifolds are cooled as well.

MRC4810 Freshwater Cooling Kit HALF SYSTEM 6 Cylinder Kit Merc & OMC, Off-Engine Half System means the block only is cooled. A full system means the manifolds are cooled as well.

MRC4821 Freshwater Cooling Kit FULL SYSTEM Full System Merc Chevy Based V8 Engines 305-350 C.I.D Stern Drives from 1986-1995 This full freshwater cooling system is designed for Mercruiser Chevy based V6 - V8 engines 262-305-350 C.I.D. stern drives from 1986 thru 1995. Especially designed to take advantage of the low capacity raw water stern drive engines. Heat exchanger has high efficiency four pass design. Half System means the block only is cooled. A full system means the manifolds are cooled as well.

MRC4823 GM Front Mercruiser 454 -- 7.4L V Belt only -- Big Block full system No Serpentine Belt 1896 thru 1997 This full freshwater block cooling kit is designed for Mercruiser Chevy Based V8 engines 454 C.I.D. stern drives from 1986 thru 1995.. Especially designed for stern drive engines. Heat exchanger has high efficiency four pass design. Half System means the block only is cooled. A full system means the manifolds are cooled as well.

MRC4825 GM Front Mercruiser 262, 305, 350 4.3, 5.0, 5.7 Small Block full system Serpentine Belt 1997-2001; *2001 need photo of engine This full freshwater cooling system is designed for Mercruiser Chevy based V6 - V8 engines 262-305-350 C.I.D. stern drives from 1997 thru 2001. Especially designed to take advantage of the low capacity raw water stern drive engines. Heat exchanger has high efficiency four pass design. Half System means the block only is cooled. A full system means the manifolds are cooled as well.