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Fuel & Air Systems

Marine Fuel & Air Systems

Fuel Pumps, Filters, Lines, Fittings & Air Intake Parts

Shop marine fuel pumps, fuel filters, water separators, fuel hoses, tanks, fittings, carburetor parts, fuel injection components, flame arrestors, air filters, and intake hardware for reliable engine performance.

Shop Fuel & Air Systems Fuel/Water Separators Fuel Pumps
Fitment Check

Match engine make, model, serial range, fuel type, hose rating, filter thread, flow direction, pressure, and mounting style before ordering.

Ask Parts Desk

Fuel systems are safety-critical. Confirm USCG/EPA hose ratings, ignition protection, leak-free fittings, ventilation, filter micron rating, and manufacturer service procedures before installation.

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Fitment

Start With Engine, Fuel Type, and Part Number

Fuel and air parts can vary by engine family, serial range, pressure, fitting size, flow direction, fuel type, and emissions setup. Use the existing part number or engine data plate whenever possible.

Gasoline FuelDiesel FuelFuel Connectors

Safety

Fuel Leaks Are Not Guesswork

Replace cracked hoses, leaking fittings, loose clamps, contaminated filters, damaged flame arrestors, and suspect fuel pumps promptly. Use parts rated for marine fuel service.

After any fuel-system work, inspect for leaks, fumes, chafe, clamp security, and proper ventilation before starting the engine.

PMP

Fuel Delivery

Pumps, hoses, fittings, tanks, caps, vents, regulators, and connectors move fuel safely from tank to engine.

FIL

Filtration

Fuel filters and water separators protect pumps, injectors, carburetors, and engines from water and debris.

AIR

Air Intake

Air filters, flame arrestors, breathers, silencers, intake gaskets, and manifolds help the engine breathe properly.

Service

Fuel System Maintenance Prevents Hard Starts

Contaminated fuel, restricted filters, aging hoses, weak pumps, clogged vents, and dirty flame arrestors can cause hard starting, stalling, poor acceleration, and unsafe fuel leaks.

Change filtersReplace filters and water-separator elements on schedule or after contamination.
Inspect hosesLook for cracking, swelling, stiffness, chafe, loose clamps, and outdated fuel line ratings.
Check airflowClean or replace air filters and inspect flame arrestors for damage or oil contamination.
Verify fittingsConfirm threads, seals, clamps, connectors, and routing are correct and leak-free.

FAQ

Fuel & Air System Questions

How often should marine fuel filters be replaced?

Follow the engine manual, but many boaters replace fuel filters at least annually or when contamination, water, hard starting, or performance problems appear.

What does a fuel/water separator do?

A fuel/water separator helps remove water and debris from fuel before it reaches the engine, reducing risk of corrosion, poor running, injector issues, and carburetor problems.

Can I use automotive fuel hose on a boat?

No. Use marine-rated fuel hose that meets the correct fuel, permeation, fire, and installation requirements for the application.

What is a flame arrestor?

A flame arrestor is an intake safety device on gasoline inboard engines that helps prevent flame from escaping the intake in a backfire event while allowing airflow.

Ready to Service Fuel & Air?

Shop Marine Fuel Pumps, Filters, Lines, Fittings & Intake Parts

Search by engine brand, part number, fuel type, filter style, hose rating, fitting size, carburetor part, injector component, or flame arrestor.

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Filters

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Mercury MerCruiser Fuel Filter - 8M0122423

$78.07 - $78.07
$78.07
$78.07
$78.07 - $78.07
$78.07
Out of stock

Mercury MerCruiser / Quicksilver Fuel Filter – 8M0122423 Maintain clean fuel delivery and protect your engine with the genuine Mercury Marine / Qui...

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$78.07 - $78.07
$78.07
$78.07
$78.07 - $78.07
$78.07
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PCM Electric Low-Pressure Fuel Pump Assembly – FCC | RA080018B

$0.00 - $0.00
$0.00
$480.88
$480.88 - $480.88
$480.88
Out of stock

PCM Electric Low-Pressure Fuel Pump Assembly – FCC | RA080018BKeep fuel moving reliably from tank to engine with this OEM-specification low-pressur...

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$0.00 - $0.00
$0.00
$480.88
$480.88 - $480.88
$480.88
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PCM Modular Returnless Fuel System – 5.0/5.7L Closed Cooling | RA080034A

$0.00 - $0.00
$0.00
$2,353.11
$2,353.11 - $2,353.11
$2,353.11
Out of stock

PCM Modular Returnless Fuel System – 5.0/5.7L Closed Cooling | RA080034AA complete modular returnless fuel system assembly for PCM 5.0L and 5.7L cl...

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$0.00 - $0.00
$0.00
$2,353.11
$2,353.11 - $2,353.11
$2,353.11
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Mercury MerCruiser MPI Idle Air Control Valve 862998

$293.15 - $293.15
$293.15
$293.15
$293.15 - $293.15
$293.15
Out of stock

Mercury MerCruiser Quicksilver 862998 is a genuine OEM idle air control valve for select fuel-injected MerCruiser MPI engines. Current Mercury deal...

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$293.15 - $293.15
$293.15
$293.15
$293.15 - $293.15
$293.15
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Mercury MerCruiser Carburetor Adaptor Kit 807726A2

$121.52 - $121.52
$121.52
$121.52 - $121.52
$121.52
Out of stock

Restore proper carburetor fitment on your MerCruiser carbureted engine with the Mercury MerCruiser Carburetor Adaptor Kit 807726A2 — a genuine OEM ...

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$121.52 - $121.52
$121.52
$121.52 - $121.52
$121.52
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Yanmar OEM Fuel Filter Element 8LV Series 119798-55110

$241.88 - $241.88
$241.88
$241.88
$241.88 - $241.88
$241.88
Out of stock

The Yanmar 119798-55110 is a genuine OEM fuel filter element for select 8LV series marine diesel engines. Current parts references identify it as E...

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$241.88 - $241.88
$241.88
$241.88
$241.88 - $241.88
$241.88
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Mercury MerCruiser Fuel Filter - 8M0093688

$93.62 - $93.62
$93.62
$93.62
$93.62 - $93.62
$93.62
Out of stock

Mercury MerCruiser / Quicksilver Fuel Filter – 8M0093688 Maintain clean fuel delivery and protect your engine with the genuine Mercury Marine / Qui...

View full details
$93.62 - $93.62
$93.62
$93.62
$93.62 - $93.62
$93.62
Sold out