• Anodes
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    • Kits
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    • Yamaha
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• Bellows
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    • Alpha
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  • OMC Cobra
  • Volvo
    • 100
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• Bilge Pumps
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• Clamps
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• Control Boxes
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    • KE-7+
    • Smart Actuator II
  • Mechanical
    • Binnacle Mount
      • CH44xx
      • CH52xx
      • CH53xx
      • CH75xx
      • CH76xx
      • CH78xx
      • Mercury
    • Side Mount
      • CH175x
      • CH2300P Ski/Jet
      • CH2500 MJB
      • CH29xx MV-3
      • Mercury Box
      • Merc Consealed
• Control Cables
  • Shift Cables
    • 33C Cables
    • 43C Cables
    • 64C Cables
    • Mercury Gen I
    • Mercury Gen II
    • OMC Post 1979
    • OMC Pre 1979
    • Volvo
    • Yamaha
  • Steering Cables
    • Cables
      • SSC124 (Rack)
      • SSC130 (Rack)
      • SSC134 (Rack)
      • SSC52 (Rotary)
      • SSC61 (Rotary)
    • Systems
      • NFB (Rotary)
      • SafeT (Rotary)
      • The Rack (Rack)
  • Utility Cables
• Coolant
  • Engine
  • Non-Toxic
• Cooling Systems
  • Electric Circ. Pumps
  • Engine Flushers
  • Heat Exchangers
    • Exchanger Kits
      • Mercruiser
      • OMC
      • Volvo
    • Exchanger Parts
    • Exchangers
  • Impeller Kits
    • Johnson Pumps
    • Mercury
    • OMC
    • Sherwood
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    • Westerbeke
  • Mechanical Circ. Pumps
  • Oil Coolers
  • Raw Water Pumps
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    • Mercruiser
    • Sherwood
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    • Yanmar
• Electrical
  • Battery Connections
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  • Fuse Holders
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• Engine Mounts
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    • 1" Stud
    • 3/4" Stud
  • Compression Mounts
  • Double Acting
  • Hino Style
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  • Rectangular Shear
    • 12mm Stud
    • 3/4" Stud
    • 5/8" Stud
  • Yanmar Style
• Fuel System
  • Additives
  • Carburetor Lines
  • Filters (Diesel)
    • Filter Assemblies
    • Racor Elements
    • Racor Spin-On
  • Filters (Gas)
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    • Complete Assemblies
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  • Hose Assemblies
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• Gas Shocks
  • Parts
  • Stainless
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• Gauges
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• Greases
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  • Various
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• Hose
  • Bilgeflex
  • Ducting Hose
  • Exhaust (No Wire)
  • Exhaust (With Wire)
  • Fuel (Inboard)
  • Fuel (Outboard)
  • Fuel (Specialty)
  • Heater Hose
  • Multiflex
  • PVC (Clear)
  • PVC (Red Tracer)
  • Sanitation
  • Split Conduit
• Hydraulic Steering
  • Accessories
    • Fittings
    • Seal Kits (Cylinders)
    • Seal Kits (Helms)
  • Baystar Kits
  • Cylinders (Inboard)
  • Cylinders (Sterndrive)
  • Cylinders (Outboard)
  • Helms
  • Hoses
    • Bulkhead
    • Standard
  • Hydraulic Steering Oil
• Ignition System
  • Cap & Rotor Kits
  • Caps
  • Inboard Coils
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  • Kill Switches
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  • Wiresets
• Manuals
  • Chrysler
  • Force
  • Honda
  • Mariner
  • Mercruiser
  • Mercury
  • Nissan/Tohatsu
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• Oil System
  • Extraction Pumps
  • Filters
  • Pressure Senders
• Oils
  • 2-Stroke Outboard Oil
    • Injected / DFI
    • Standard TCW3
    • Synthetic (XD100)
  • 4-Stroke Inboard Oil
    • 25W40
    • Blend 25W40
    • Synthetic 10W30
    • Synthetic 20W40
    • Synthetic SAE30
  • 4-Stroke Outboard Oil
    • 10W30
    • Blend 10W40 (Suzuki)
    • Blend 25W50 (Verado)
    • Synthetic 10W30
    • Synthetic 25W40
  • Diesel Engine Oil
  • Gearlube
    • Lube
      • Standard
      • Syn. Blend
      • Synthetic (Volvo)
      • Type-C
    • Pump and Fittings
  • Hydraulic Steering
  • Power Trim/Steering
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• Paint
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• Pipe Fittings
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• Propellers
  • Force
    • 20 - 60
    • 25
    • 3.5 - 8
    • 40 - 75
    • 75 - 150
    • 85 - 150 Pre 1995
    • 9.9 - 15
  • Honda
    • 115D, 135 - 225
    • 25 - 30
    • 35 - 60
    • 60BF, 75-130
    • 7.5 - 10 (Pin)
    • 9.9 - 20
  • Mercruiser
    • Alpha 1
    • Bravo 2
    • Bravo 3
  • Mercury
    • 135 - 350
    • 15 - 25
    • 15/20, 9.9BF
    • 2.5 - 3.5
    • 25 - 30 4-Stroke
    • 25 - 30
    • 25BF, 30 - 70
    • 4 - 6
    • 40-60BF, 70-140
    • 6 - 15
    • 7.5 / 9.8
    • 8
    • 8 / 9.9
    • 9.9 - 25
  • Nissan/Tohatsu
    • 2.5 - 3.5
    • 25 - 30 4Stk
    • 35 - 50
    • 4 - 6
    • 50 - 70
    • 70 - 140
    • 8 - 9.9 4Stk
    • 9.9 - 20
  • OMC Cobra
    • Cobra / Model 400
    • Cobra / King Cobra
  • Suzuki
    • 150 - 300
    • 25 - 30
    • 35 - 65
    • 60/70 4Stk, 75 - 140
    • 70 - 140 4Stk
    • 8 - 15
  • Volvo
    • 200 - 290 / SP
    • DPS
    • IPS
    • SX
  • Wrenches
  • Yamaha
    • 15 - 28 (Pin)
    • 150 - 300
    • 20 - 30
    • 40 - 60
    • 50 - 130
    • 6 - 9.9
    • 8
    • 9.9 - 20
• Shaft Couplings
  • Flexible Shaft Couplings
  • Steel Shaft Couplings
• Shop Supplies
  • Adhesives
  • Anti-Seize
  • Bearing Mounting
  • Cleaners
  • Dielectric Grease
  • Gasket Maker
  • Lubricants
  • Repairs
  • Thread Locker
  • Thread Sealant
• Shop Tools
  • Compression Testers
  • Filter Wrenches
  • Fuel System Tools
  • Gear Lube Pumps
  • Lifting Tools
  • Multimeters
  • Oil Extraction Pumps
  • Pullers
  • Spark Testers
  • Timing Tools
• Specials
  • Clearance
  • Monthly Deals
• Trailers
  • Bearings
  • Drive Clips
• Transmissions
  • Complete
    • Borg Warner
    • PRM
    • ZF
  • Damper Plates
  • Parts and Kits
    • Velvet 71 / 72
    • ZF10 / HBW100
    • ZF15 / HBW150
    • ZF15V / HBW150V
    • ZF25 / HBW 250
    • ZF45 / HBW 450
    • ZF5 / HBW50
    • ZF63 / HBW 630A
• Trim Tabs
  • Kits
  • Parts
  • Planes
• Washdown Pumps
  • Kits
  • Pumps

Mercruiser Closed Cooling Kits

Closed cooling kits can be complicated to look up!
Please let us help you! Contact us at (866) 278-4466 or via email sales@marinepartssupply.com

MC300 $0.00 Special Order 78-83 120/140 MCM/FUL

310301 $1279.47 Special Order 3.0 MERC REMOTE MT

MC302 $0.00 Subs Available 4.3-5.7 FRT MT B/O

MC303 $0.00 Special Order 4.3-5.0 CHEV MERC

MC304 $0.00 Special Order 5.7 C/R Rear Mnt

MC305 $0.00 Special Order 898/228 B/M R DUMP

MC306 $0.00 Special Order 188/233 B/M

MC307 $0.00 Special Order 165 B/M

MC309 $0.00 Special Order R/DUMP 330/454-1981 B/M

MC310 $0.00 Special Order 82-91 C/R 330/454 FUL

MC311 $0.00 Special Order San Juan cooling 7.4MCM

MC312 $0.00 Subs Available 4 INCH H/EX 470 SEA KAMP

MC313 $0.00 Special Order 4.3 5.7 ALPHA BRAVO V BEL HEAT EXCHANGER KIT

MC314 $0.00 Subs Available FWC KIT 4.3-5.7 A/B FULL

MC315 $0.00 Special Order 5.7 EFI BLOCK ONLY

MC317 $0.00 Special Order 350MPI B/O V BELTS

MC319 $0.00 Special Order V6 SERB BELTS A/B B/O

MC320 $0.00 Subs Available 5.7 SERP/BELTS A/B B/ PORT SIDE ALT

MC321 $0.00 Subs Available 4.3 5.0 5.7 FULL SYST PORT SIDE ALT

MC322 $0.00 Special Order 4.3/5.0/5.7 FULL PORT SIDE ALT

MC323 $0.00 Special Order 7.4 EFI V/BELT B/O 1997

MC324 $0.00 Special Order 7.4 MPI B/M 1997 UP

MC326 $0.00 Special Order 5.7 MPI B/M

MC327 $0.00 Special Order 3.0 BLOCK MNT B/O 1997 1997-1999

MC329 $0.00 Special Order 7.4 SERP B/O MPI 1998

MC330 $0.00 Special Order 7.4SERP FULL SEE NOTE

MC331 $0.00 Subs Available 5.7-5.0-4.3EFI 2000 MOD STBD SIDE ALT

MC332 $0.00 Special Order 4.3-5.0-5.7 EFI 2000 B/M STBD SIDE ALT

MC333 $0.00 Special Order 3.0L 2000 MODEL 2000-2004

MC334 $0.00 Special Order 7.4 REAR MOUNT

MC335 $0.00 Special Order 7.4 V Drive

MC336 $0.00 Subs Available 4.3 5.7 6.2 DRY JOINT BLOCK ONLY

MC337 $0.00 Special Order 5.0 5.7 350 MAGMPI NO D/J

MC338 $0.00 Special Order 5.0 5.7 2003 CARB MERC

MC339 $0.00 Special Order 2002-2003 4.3 5.0 5.7 CARB A/B FULL SYSTEM

MC340 $0.00 Subs Available 4.3 5.7 CARB DRY JOINT BLOCK ONLY

MC341 $0.00 Special Order 4.3 5.7 CARB DRY JOINT BLOCK AND MANIFOLDS

MC342 $1655.95 Special Order 2005-2017 3.0 TKS FWC

MC344 $0.00 Special Order Closed Cooling Kit