same day shipping clock icon
free shipping box icon
price tag icon

Mercruiser Fuel System

7443
guidebook

Parts Selection Guide

Find the parts you need

Clear
  • 1) Engine Manufacturer:
  • 2) Part Type:
  • 3) Select Model:

Prop Selection Guide

Find the right prop for your boat

Clear
  • Engine Manufacturer:
  • Engine Horsepower:
  • Engine Model:
  • Engine Year:
  • Prop Pitch:
      • MPI Products USCG Type A Marine Fuel Hose
        List Price:
        Starting At: $3.49

        MPI Fuel Hose USCG Type A This premium quality fire-retardant fuel hose meets or exceeds all requirements of new ISO 7840 and SAE J5127 standards required by USCG, ABYC and NMMA. Inner tube material provides extraordinary resistance to gasoline,...

        Choose Options
      • Marine Products Fuel Vent Hose 5/8"
        Starting At: $4.99

        Marine Products Fuel Vent Hose 5/8" Fuel Vent Lines - Gasoline up to 85% ethanol blended fuel, diesel fuel Meets USCG Type A2 Requirements For Pleasure Boats Resists gasoline/alcohol blended fuel Fire resistant Weather/UV resistant NBR/PVC...

        Add to Cart
      • List Price: $10.49
        Starting At: $7.99

        Sierra 18-7845 Fuel Separating Fuel Filter for Sterndrive and Inboard Engines Sierra canister fuel filters are designed to be an exact fit and performance replacement to your current OEM canister filter. These filters are tested to meet ISO, SAE, and...

        Add to Cart
      • Mercury 35-802893T Water Separating Fuel Filter
        List Price: $11.92
        Starting At: $9.93

        Mercury 35-802893T Water Separating Fuel Filter OEM Fuel Filter fits all Mercury, Mariner and Force outboards equipped with externally mounted water separating fuel filter bases and all MerCruiser 4.3 Generation II engines (except 1992 MerCruiser 4.3 L...

        Add to Cart
      • T-H Marine Stainless Steel Hose Clamp
        List Price: $5.09
        Starting At: $4.49

        T-H Marine Stainless Steel Hose Clamps T-H Marine stainless steel hose clamps are completely made with 300 series stainless components, including the tightening screw. Standard worm gear construction. Packaged in pairs.

        Choose Options
      • List Price: $10.49
        Starting At: $7.99

        Sierra 18-7844 Water Separating Fuel Filter for Sterndrives and Outboards Sierra fuel water separators remove over 99.8% of emulsified water from your gasoline. Sierra's 10 micron filters are over 90% efficient at removing particles as small as 10...

        Add to Cart
      • Moeller Marine Fuel Hose Barb, Brass
        List Price: $4.05
        Starting At: $3.49

        Moeller Marine Fuel Hose Barb Features: High quality brass hose barbs Male Thread For permanent fuel tanks 1/4" NPT X 1/4" Barb 15 CAL

        Choose Options
      • Sierra 18-7919 Fuel Water Separator Filter Replaces 35-809097
        List Price: $28.49
        Starting At: $19.99

        Sierra 18-7919 10 Micron Fuel Water Separator Replacement Filter - Racor Style For styles with a spin on drain bowls. Spin On Replacement. Sierra 10 Micron Filters are over 90% effective at removing engine damaging 10-micron and larger particles...

        Add to Cart
      • Sierra 18-7977 Fuel Filter Replaces 35-8M0093688
        List Price: $54.49
        Starting At: $37.99

        Sierra 18-7977 Mercruiser Fuel Filter Sierra replacement fuel filters are manufactured to meet or exceed OEM requirements. Fits: 2004 & Newer MCM/MIE engine with Gen III fuel cooler Micron Rating: 20 Interchangeable...

        Add to Cart
      • Sierra 18-7721 Fuel Filter Replaces 35-864572
        List Price: $49.99
        Starting At: $34.99

        Sierra 18-7721 Mercruiser Fuel Filter Replaces 35-864572 Sierra replacement fuel filters are designed to meet OEM specifications. All Sierra Fuel Filters not only protect your engine, but are also over 90% efficient at removing engine damaging 10-micron...

        Add to Cart
      • Mercury Mercruiser Marine Fuel Pump Filter Kit 35-8M0046752
        List Price: $9.80
        Starting At: $7.50

        Fuel Pump Filter Kit , Mercury - Mercruiser 35-8M0046752 Fuel Filter, spring and gaskets for the filter bowl Fits MCM 120/2.5L, 140/3.0L/LX, 3.7L, 3.8L & 4.3L...

        Add to Cart
      • Mercury Mercruiser Gen III Fuel Cooler Marine Fuel Filter
        List Price: $86.99
        Starting At: $60.99

        Gen III Fuel Cooler Fuel Filter, Mercury - Mercruiser 35-8M0093688 Fits: 350 Mag MPI Alpha/Bravo, 350 Mag MPI Horizon Alpha/Bravo, 350 Mag MPI Horizon MIE 350 Mag MPI MIE, 496 MAG, 496 MAG H.O., 5.0 MPI Alpha/Bravo 8.1L Inboard, 8.1L Inboard H...

        Add to Cart
      • 18-7784
        List Price: $10.49
        Starting At: $7.49

        Sierra 18-7784 Fuel Filter for Mercruiser Fits: Mercruiser 2.5L/3.0L(Serial No. 6229718 & later) All MC224 CID (Serial No. 6218037 & later) All GM 262 CID (Serial No. A331455 & later) with Carter Fuel Pumps Interchangeable...

        Add to Cart
      • Sierra 18-7202 Carburetor Float Replaces 1397-5837
        List Price: $17.99
        Starting At: $12.99

        Sierra 18-7202 Carburetor Float for Mercruiser, Volvo Sierra high-quality Carburetor Float for MerCarb 2 BBL. Alcohol resistant. Sierra replacement engine parts are manufactured to meet or exceed OEM requirements. Interchangeable...

        Add to Cart
      • Sierra 18-7859 Fuel Filter Replaces 35-53336Q
        List Price: $4.99
        Starting At: $3.99

        Sierra 18-7859 Fuel Filter for Mercruiser, Volvo, OMC For most GM Inline 4 & 6 cycle, Ford & GM V-8's up to 400 HP and all Mercruiser 224 CID engines. Interchangeable with: GLM 24840 Johnson/Evinrude...

        Add to Cart
      • Sierra 18-7860 Fuel Filter Replaces 35-49088Q2
        List Price: $9.49
        Starting At: $6.99

        Sierra 18-7860 Fuel Pump Filter for Mercruiser, OMC High-quality engine parts are designed to meet OEM specifications. For Mercruiser, Mercury, Chris-Craft and OMC Inline 4 & 6 Cyl Engines with AC Fuel Pumps. Use with: 18-7278 Fuel...

        Add to Cart
      • Moeller Marine 3/8" I.D. Hose, Clip Style Fuel Line Assembly for Mercury Engines
        List Price: $67.99
        Starting At: $46.99

        Moeller Marine 3/8" I.D. Hose, Clip Style Fuel Line Assembly for Mercury Engines Assemblies use a compounded, tough & pliable UV-resistant hose. Includes fittings built to OEM specifications for replacement parts. Clip style fuel line...

        Add to Cart
      • Sierra 18-7097 Carburetor Kit Replaces 3302-804845
        List Price: $65.49
        Starting At: $45.99

        Sierra 18-7097 Carburetor Kit Sierra carburetor kit for 2 bbl Mercruiser Mercarb carburetors with straight accelerator pumps. Fits 1983-86 MCM 120, 140, 470, 185, 200 & 898 Eng. with older MerCarb 2 bbl Fits older MerCarb 2 bbl having the bottom...

        Add to Cart
      • Sierra 18-7852-2 Fuel Water Separator Filter W/Bonus Pack
        List Price: $47.99
        Starting At: $33.49

        21 Micron Fuel Water Separator Kit (1/4" Thread) for Carbureted Engines (Tall Filter)  w-Bonus Pack - Special Order est. 10 Days 21 MICRON FILTER KITS - FOR CARBURETED ENGINES Contains spare filter Contains: ...

        Add to Cart
      • Sierra 18-7947 Fuel Filter 10 Micron Replaces17670-ZW1-030GH
        List Price: $24.49
        Starting At: $16.99

        Sierra 18-7947 10 Micron Fuel Water Separator Filter - Racor Style Sierra 10-micron fuel water separator filters are over 90% effective at removing dirt and debris from your fuel system without starving the engine for fuel. Sierra high-quality fuel...

        Add to Cart

      Mercruiser Fuel Pump

      A Mercruiser Fuel Pump is a key component in a highly reliable outboard. These do not fail often, so, when diagnosing a fuel problem, be sure to inspect other system components before leveling blame on the fuel pump. Wholesale Marine recommends taking these steps in a process of elimination to determine if a fuel pump is malfunctioning.

      Troubleshooting a Mercruiser Fuel Pump

      1)    This might seem like a no-brainer, but it is often overlooked. Is there enough fuel in the tank?

      2)    Check the sump pump screen and tank vent for clogs.

      3)    Next, check spark plug compression. Follow owner’s manual instructions for this procedure. If the PSI is below recommended levels, replace the plug(s).

      4)    The pulse hose connects to the fuel pump and the intake manifold. Loosen the clamp that secures it while pulling the starter rope several times. If there is no fuel discharge, it could mean a bad fuel pump check valve or diaphragm.

      5)    Hook up a pressure gauge to the pulse hose where it exits the fuel pump. Crank the engine and take a gauge reading. Normal fuel pumps will exert 5 to 7 psi of pressure. Readings below this indicate a defective fuel pump check valve or diaphragm.

      6)    If the process of elimination points to a faulty Mercruiser Fuel Pump, replace the unit or buy a rebuild kit.

      Wholesale Marine stocks mechanical and electric fuel pumps and filters for your Mercruiser engine. We have the best selection, lowest price, and fast shipping for a $6.99 flat fee. Give us a call or try our user-friendly Parts Finder for help locating the correct parts for your motor.

      Wholesale Marine has other benefits our customers appreciate including our Captain’s Club Loyalty Rewards program, easy returns, and great customer service from boating enthusiasts like you. For questions or to place an order, call us from 9:00 AM until 6:00 PM, Monday through Friday at (877) 388-2628.