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Mercruiser Fuel System


Parts Selection Guide

Find the parts you need

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      • MPI Products USCG Type A Marine Fuel Hose
        Starting At: $3.46

        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, diesel and alcohol-enhanced fuels...

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      • Marine Products Fuel Fill Hose 1 1/2"
        Starting At: $13.62

        Sierra Shields Fuel Fill Hose 1-1/2" Fuel Fill - Gas Or Diesel For Pleasure Boats Only Resists gasoline/alcohol blends. Compounded for low permeation. Reinforced with wire helic imbedded between plies of HD synthetic cord Abrasion...

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      • Marine Products Fuel Vent Hose 5/8"
        Starting At: $5.03

        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...

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      • List Price: $10.44
        Now: $7.93

        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...

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      • T-H Marine Stainless Steel Hose Clamp
        List Price: $5.09
        Starting At: $4.43

        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.

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      • Mercury 35-802893T Water Separating Fuel Filter
        List Price: $11.99
        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...

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      • List Price: $10.44
        Now: $7.93

        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...

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      • Moeller Marine Fuel Hose Barb, Brass
        List Price: $4.05
        Starting At: $3.24

        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

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      • Sierra 18-7098-1 Carburetor Kit Replaces 3302-804844002
        List Price: $70.09
        Now: $49.06

        Sierra Carburetor Kit ( 2 bbl ) for MerCarbs For 2 bbl Mercruiser Mercarb carburetors with hooked accelerator pumps. Applications: MCM 140/3.0L/3.0LX(4 cyl.) SN.6229718 and Above MCM 165/170/3.7L(4 cyl) SN.6916779 & Above MCM 205(262 CID) SN...

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      • Sierra 18-7746 Carburetor Kit Replaces 823427A1
        List Price: $26.45
        Now: $18.51

        Sierra 18-7746 Carburetor rebuild kit for 2 barrel Rochester carburetors, Model R2/2GC Sierra high-quality carburetor kits are designed to meet OEM specifications. Sierra Carburetor Kits utilize superior corrosion resistant materials and unmatched...

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      • Sierra 18-7919 Fuel Water Separator Filter Replaces 35-809097
        List Price: $28.19
        Starting At: $19.74

        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...

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      • Sierra 18-7977 Fuel Filter Replaces 35-8M0093688
        List Price: $54.36
        Now: $38.05

        Mercruiser Gen 3 Fuel Filter by Sierra Replaces: Mercruiser 35-866171A01, 35-8M0093688 Mallory 9-37827   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...

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      • Sierra 18-7721 Fuel Filter Replaces 35-864572
        List Price: $49.86
        Now: $34.90

        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...

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      • Mercury Mercruiser Marine Fuel Pump Filter Kit 35-8M0046752
        List Price: $8.65
        Starting At: $7.21

        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...

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      • Mercury Mercruiser Gen III Fuel Cooler Marine Fuel Filter
        List Price: $63.99
        Starting At: $53.49

        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...

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      • Sierra 18-7283 Fuel Pump Replaces 8M0058164
        List Price: $141.90
        Starting At: $99.33

        Fuel Pump for Mercruiser, OMC Mounting Gasket Included. For GM V-8 Engines. Flange ID: M60600 Replaces: Mercruiser 861678A1,97401A2,97401A2A8, 97401, 8M0058164 OMC 509404 Mallory 9-35423 GLM 77113 Pro Marine 18-7283 Redline RL7283  

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      • 18-7784
        List Price: $10.30
        Starting At: $7.21

        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...

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      • Sierra 18-7202 Carburetor Float Replaces 1397-5837
        List Price: $17.87
        Starting At: $12.51

        Sierra 18-7202 Carburetor Float for Mercruiser, Volvo Sierra high-quality Carburetor Float for MerCarb 2 BBL. Alcohol resistant. Interchangeable with: GLM 77230 Mallory 9-36903 Mercruiser Stern...

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      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.