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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.

Quick ShopTop OEMFitmentSystemsServiceFAQFlame ArrestorsFuel Hose

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Inspect hosesLook for cracking, swelling, stiffness, chafe, loose clamps, and outdated fuel line ratings.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.

Shop Fuel & Air SystemsFuel FiltersFuel Hose

Filters

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Mercury MerCruiser Fuel Filter Kit - 8M0149607

$0.00 - $0.00
$0.00
$20.20
$20.20 - $20.20
$20.20
Only 4 left!

Mercury MerCruiser / Quicksilver Fuel Filter Kit – 8M0149607 Maintain clean fuel delivery and protect your engine with the genuine Mercury Marine /...

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$0.00 - $0.00
$0.00
$20.20
$20.20 - $20.20
$20.20

PCM Stainless Steel Fuel Line – Obsolete Stock | 21045

$48.22 - $48.22
$48.22
$48.22
$48.22 - $48.22
$48.22
Only 1 left!

PCM Stainless Steel Fuel Line — Part #21045 | Obsolete Stock This is a genuine PCM stainless steel fuel line for Pleasurecraft Marine inboard engin...

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$48.22 - $48.22
$48.22
$48.22
$48.22 - $48.22
$48.22
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PCM Stainless Steel Fuel Line – Obsolete Stock | 98113

$68.44
$68.44 - $68.44
$68.44
$58.44
$58.44 - $58.44
$58.44
Only 1 left!

PCM Stainless Steel Fuel Line – Obsolete Stock | 98113A genuine PCM stainless steel fuel line for inboard engine fuel systems. This part (98113) ha...

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$68.44
$68.44 - $68.44
$68.44
$58.44
$58.44 - $58.44
$58.44
Save 15% Save %

PCM Fuel Line – Obsolete Stock | 98114

$0.00 - $0.00
$0.00
$56.22
$56.22 - $56.22
$56.22
Only 1 left!

PCM Fuel Line – Obsolete Stock | 98114A genuine PCM fuel line for inboard engine fuel systems. This part (98114) has been discontinued by the manuf...

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$0.00 - $0.00
$0.00
$56.22
$56.22 - $56.22
$56.22

PCM High Pressure Fuel Pump – FCC | RA080025A

$0.00 - $0.00
$0.00
$292.14
$292.14 - $292.14
$292.14
Only 1 left!

PCM High Pressure Fuel Pump – FCC | RA080025ARestore consistent fuel pressure and reliable engine performance with a genuine OEM-specification high...

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$0.00 - $0.00
$0.00
$292.14
$292.14 - $292.14
$292.14

Mercury Gen III Cool Fuel Filter Disc | 35-892665 / 8M0204703

$10.00 - $10.00
$10.00
$10.00 - $10.00
$10.00
Only 1 left!

Mercury Gen III Cool Fuel Filter Disc — 35-892665 / 8M0204703Keep your Mercury or MerCruiser fuel system clean and protected with this OEM replacem...

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$10.00 - $10.00
$10.00
$10.00 - $10.00
$10.00

Scepter Yamaha Female Fuel Connector – 5/16" SCE-05813

$9.70 - $9.70
$9.70
$9.70
$9.70 - $9.70
$9.70
Only 2 left!

A direct-fit female fuel connector for Yamaha outboard engines. This Scepter connector mates with the standard Yamaha-style male fitting on your en...

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$9.70 - $9.70
$9.70
$9.70
$9.70 - $9.70
$9.70

Fuel Element with Bail Handle - PF986

$0.00 - $0.00
$0.00
$46.84
$46.84 - $46.84
$46.84
Only 3 left!

The Baldwin PF986 Fuel Filter Element is a cartridge-style diesel fuel filter designed for compatible marine, industrial, and equipment fuel filter...

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$0.00 - $0.00
$0.00
$46.84
$46.84 - $46.84
$46.84

Caterpillar 5I-7951 Advanced Efficiency Secondary Fuel Filter

$0.00 - $0.00
$0.00
$79.99
$79.99 - $79.99
$79.99
Only 2 left!

The Caterpillar 5I-7951 Advanced Efficiency Secondary Fuel Filter is a heavy-duty spin-on fuel filter designed for compatible Caterpillar diesel en...

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$0.00 - $0.00
$0.00
$79.99
$79.99 - $79.99
$79.99

Parker Racor 500 Turbine Series Replacement Filter Element — 2010PM-OR 30 Micron

$22.80 - $22.80
$22.80
$22.80
$22.80 - $22.80
$22.80
in stock

The Racor 2010PM-OR is a genuine replacement cartridge filter element for Racor 500 Turbine Series fuel filter and water separator housings. This 3...

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$22.80 - $22.80
$22.80
$22.80
$22.80 - $22.80
$22.80

Parker Racor Turbine Series Replacement Filter Element — 2040V30 30 Micron

$23.40 - $23.40
$23.40
$23.40
$23.40 - $23.40
$23.40
Only 2 left!

Racor 30-Micron Turbine Series Replacement Filter Element (RAC-2040V30) Keep your marine fuel system running clean with the Racor 2040V30 replaceme...

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$23.40 - $23.40
$23.40
$23.40
$23.40 - $23.40
$23.40

Parker Racor Marine Fuel Filter Water Separator — 230RMAM

$0.00 - $0.00
$0.00
$580.69
$580.69 - $580.69
$580.69
Only 1 left!

The Parker Racor 230RMAM Marine Fuel Filter Water Separator is a compact diesel fuel filtration assembly designed for compatible marine propulsion ...

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$0.00 - $0.00
$0.00
$580.69
$580.69 - $580.69
$580.69

West Marine Fuel/Water Separating Filter — 1778 | Sierra 18-7789

$17.82 - $17.82
$17.82
$17.82
$17.82 - $17.82
$17.82
Only 1 left!

The West Marine 1778 Fuel Water Separating Filter is a marine spin-on replacement filter element designed for compatible gasoline fuel/water separa...

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$17.82 - $17.82
$17.82
$17.82
$17.82 - $17.82
$17.82

Sierra Marine Fuel/Water Separating Filter — 18-7845 Long 21 Micron

$22.21 - $22.21
$22.21
$22.21
$22.21 - $22.21
$22.21
in stock

The Sierra 18-7845 is a marine fuel/water separating spin-on filter designed for gasoline applications and built to help protect the fuel system fr...

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$22.21 - $22.21
$22.21
$22.21
$22.21 - $22.21
$22.21

Sierra Marine Fuel/Water Separating Filter — 18-7846

$23.18 - $23.18
$23.18
$23.18
$23.18 - $23.18
$23.18
Only 2 left!

The Sierra Marine 18-7846 Fuel Water Separating Filter, also cross-referenced as Aqua Power AP-6040, is a marine spin-on replacement filter designe...

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$23.18 - $23.18
$23.18
$23.18
$23.18 - $23.18
$23.18

Aqua Power Fuel/Water Separating Filter — AP-6012

$89.23 - $89.23
$89.23
$89.23
$89.23 - $89.23
$89.23
Only 3 left!

The Sierra / Aqua Power AP-6012 Fuel Water Separating Filter, commonly cross-referenced with Sierra Marine 18-7846, is a heavy-duty marine replacem...

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$89.23 - $89.23
$89.23
$89.23
$89.23 - $89.23
$89.23

Sierra Marine - Fuel Water Separator Filter - 18-7862

$0.00 - $0.00
$0.00
$23.46
$23.46 - $23.46
$23.46
in stock

The AP-1647 Fuel Water Separator Filter Element is a marine replacement filter element commonly cross-referenced with Sierra Marine 18-7862. It is ...

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$0.00 - $0.00
$0.00
$23.46
$23.46 - $23.46
$23.46

Mercury Outboard Under-Cowl Fuel Filter Kit - 35-87946Q04

$0.00 - $0.00
$0.00
$21.15
$21.15 - $21.15
$21.15
Only 1 left!

The Mercury Quicksilver 35-87946Q04 is a genuine Mercury Marine OEM under-cowl fuel filter kit used on select Mercury and Mariner outboards. This f...

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$0.00 - $0.00
$0.00
$21.15
$21.15 - $21.15
$21.15

Mercury MerCruiser 3.0L Fuel Pump Gasket - 27-8M0108647

$0.00 - $0.00
$0.00
$5.84
$5.84 - $5.84
$5.84
Only 1 left!

The Mercury MerCruiser Quicksilver 27-8M0108647 is a genuine Mercury Marine OEM fuel pump gasket used on select MerCruiser gasoline engines where t...

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$0.00 - $0.00
$0.00
$5.84
$5.84 - $5.84
$5.84

Mercury MerCruiser 2BBL Carburetor Base Mounting Gasket - 27-8079821

$0.00 - $0.00
$0.00
$7.79
$7.79 - $7.79
$7.79
in stock

The Mercury MerCruiser Quicksilver 27-8079821 is a genuine Mercury Marine OEM carburetor base mounting gasket used on select MerCruiser carbureted ...

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$0.00 - $0.00
$0.00
$7.79
$7.79 - $7.79
$7.79

Mercury MerCruiser Fuel Cooler Quad Ring Seal - 26-8M0214975

$0.00 - $0.00
$0.00
$3.21
$3.21 - $3.21
$3.21
in stock

The Mercury MerCruiser Quicksilver 26-8M0214975 is a genuine Mercury Marine OEM fuel cooler quad ring seal used in select Mercury and MerCruiser fu...

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$0.00 - $0.00
$0.00
$3.21
$3.21 - $3.21
$3.21

Mercury MerCruiser Fuel Pump Mounting Plate Gasket - 27-42457

$0.00 - $0.00
$0.00
$32.79
$32.79 - $32.79
$32.79
Only 1 left!

The Mercury MerCruiser Quicksilver 27-42457 is a genuine Mercury Marine OEM fuel pump mounting plate gasket used on select GM-based MerCruiser V6 s...

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$0.00 - $0.00
$0.00
$32.79
$32.79 - $32.79
$32.79

Mercury - Fuel Pump Gasket - 27-34213

$0.00 - $0.00
$0.00
$10.43
$10.43 - $10.43
$10.43
Only 5 left!

The Mercury Quicksilver Fuel Pump Gasket 27-34213 is an OEM-style mounting gasket used between the mechanical fuel pump and engine block on compati...

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$0.00 - $0.00
$0.00
$10.43
$10.43 - $10.43
$10.43

Mercury - Fuel Line Connector - 22-33821

$0.00 - $0.00
$0.00
$14.54
$14.54 - $14.54
$14.54
Only 4 left!

The Mercury Quicksilver Fuel Line Connector 22-33821 is an OEM brass fuel-system adapter fitting used on select Mercury and MerCruiser fuel deliver...

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$0.00 - $0.00
$0.00
$14.54
$14.54 - $14.54
$14.54

Mercury - Brass Tee Fitting - 286241

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$0.00
$22.64
$22.64 - $22.64
$22.64
Only 1 left!

The Mercury MerCruiser Quicksilver Brass Tee Fitting 22-286241 is a genuine OEM-style 3-way brass intersection fitting used in select Mercury outbo...

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$0.00 - $0.00
$0.00
$22.64
$22.64 - $22.64
$22.64

Yanmar Fuel Feed Pump Assembly 129158-52101 - Special Order

$0.00 - $0.00
$0.00
$280.30
$280.30 - $280.30
$280.30

The Yanmar 129158-52101 Fuel Feed Pump Assembly is a diesel fuel supply/lift pump used on compatible Yanmar marine and industrial diesel engines. I...

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$0.00 - $0.00
$0.00
$280.30
$280.30 - $280.30
$280.30

Cummins Fuel System Filter Kit CUMFS1009

$0.00 - $0.00
$0.00
$89.58
$89.58 - $89.58
$89.58
Only 2 left!

The Cummins CUMFS1009 Fuel System Filter Kit is intended for servicing the fuel filtration system on compatible Cummins diesel engine applications....

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$0.00 - $0.00
$0.00
$89.58
$89.58 - $89.58
$89.58

Cummins Propane Solenoid Valve A121R

$0.00 - $0.00
$0.00
$38.64
$38.64 - $38.64
$38.64
Only 1 left!

The Cummins A121R Propane Solenoid Valve is a replacement fuel shutoff/control solenoid valve for compatible Cummins Onan propane generator fuel sy...

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$0.00 - $0.00
$0.00
$38.64
$38.64 - $38.64
$38.64

Volvo Penta Injector 22625707 - Special Order

$641.00 - $641.00
$641.00
$641.00
$641.00 - $641.00
$641.00

The Volvo Penta Injector 22625707 is a genuine common-rail fuel injector used in select Volvo Penta D8 fuel-system applications. Volvo Penta parts ...

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$641.00 - $641.00
$641.00
$641.00
$641.00 - $641.00
$641.00

Volvo Penta Hose 22494348 - Special Order

$824.00 - $824.00
$824.00
$824.00
$824.00 - $824.00
$824.00

The Volvo Penta Hose 22494348 is a genuine Volvo Penta red SCR / DEF / urea-system hose used in aftertreatment hose installations. Parts-book data ...

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$824.00 - $824.00
$824.00
$824.00
$824.00 - $824.00
$824.00

Volvo Penta Pump Element 3829555 - Special Order

$2,190.00 - $2,190.00
$2,190.00
$2,190.00
$2,190.00 - $2,190.00
$2,190.00

The Volvo Penta Pump Element 3829555 is a precision diesel fuel-injection pump element used inside Volvo Penta fuel injection pump assemblies that ...

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$2,190.00 - $2,190.00
$2,190.00
$2,190.00
$2,190.00 - $2,190.00
$2,190.00

Volvo Penta Pump Element 3829572 - Special Order

$1,220.00 - $1,220.00
$1,220.00
$1,220.00
$1,220.00 - $1,220.00
$1,220.00

The Volvo Penta Pump Element 3829572 is a precision fuel-injection pump element used inside the injection pump assembly on Volvo Penta TAD1031G eng...

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$1,220.00 - $1,220.00
$1,220.00
$1,220.00
$1,220.00 - $1,220.00
$1,220.00

Volvo Penta Injection Pump 3830103 - Special Order

$12,840.00 - $12,840.00
$12,840.00
$12,840.00
$12,840.00 - $12,840.00
$12,840.00

The Volvo Penta Injection Pump 3830103 is a diesel fuel injection pump used in the TAMD63L-A fuel system under the Fuel Injection Pump and Fuel Fil...

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$12,840.00 - $12,840.00
$12,840.00
$12,840.00
$12,840.00 - $12,840.00
$12,840.00

Volvo Penta Injection Pump 3831040 - Special Order

$13,910.00 - $13,910.00
$13,910.00
$13,910.00
$13,910.00 - $13,910.00
$13,910.00

The Volvo Penta Injection Pump 3831040 is a genuine Volvo Penta diesel fuel injection pump reference for TAMD122A marine diesel applications. Curre...

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$13,910.00 - $13,910.00
$13,910.00
$13,910.00
$13,910.00 - $13,910.00
$13,910.00

Volvo Penta Injection Pump 3834308 - Special Order

$24,434.23 - $24,434.23
$24,434.23
$24,434.23
$24,434.23 - $24,434.23
$24,434.23

The Volvo Penta Injection Pump 3834308 is a genuine Volvo Penta diesel fuel injection pump reference for engines whose fuel-system parts diagram ca...

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$24,434.23 - $24,434.23
$24,434.23
$24,434.23
$24,434.23 - $24,434.23
$24,434.23

Volvo Penta Injection Pump 3836145 - Special Order

$26,519.08 - $26,519.08
$26,519.08
$26,519.08
$26,519.08 - $26,519.08
$26,519.08

The Volvo Penta Injection Pump 3836145 is a genuine Volvo Penta diesel fuel injection pump used in select heavy-duty TAMD marine diesel application...

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$26,519.08 - $26,519.08
$26,519.08
$26,519.08
$26,519.08 - $26,519.08
$26,519.08

Volvo Penta Fuel Filter Water Separator 6-Micron 3847644

$33.80 - $33.80
$33.80
$33.80
$33.80 - $33.80
$33.80
in stock

The Volvo Penta Fuel Filter 3847644 is a genuine OEM fuel filter / water separator for compatible Volvo Penta gasoline marine engines. It helps rem...

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$33.80 - $33.80
$33.80
$33.80
$33.80 - $33.80
$33.80

Volvo Penta MAP Sensor Inline Filter 38522249

$0.00 - $0.00
$0.00
$10.80
$10.80 - $10.80
$10.80
Only 1 left!

The Volvo Penta Filter 38522249 is a small inline filter used in Volvo Penta marine engine service applications. The Volvo reference is commonly sh...

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$0.00 - $0.00
$0.00
$10.80
$10.80 - $10.80
$10.80

Volvo Penta Fuel Filter Kit 876554

$87.00 - $87.00
$87.00
$87.00 - $87.00
$87.00
Only 3 left!

The Volvo Penta Fuel Filter Kit 876554 is a genuine Volvo Penta diesel fuel filter service kit used to help protect compatible Volvo Penta engines ...

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$87.00 - $87.00
$87.00
$87.00 - $87.00
$87.00

Mercury Fuel Pump Diaphragm 31503A1

$14.85 - $14.85
$14.85
$14.85 - $14.85
$14.85
Only 4 left!

Mercury MerCruiser Quicksilver 31503A1 is a genuine Mercury Marine fuel pump diaphragm used in select older Mercury outboard fuel pump assemblies. ...

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$14.85 - $14.85
$14.85
$14.85 - $14.85
$14.85

Mercury MerCruiser Carburetor Idle Mixture Screw Kit 811539

$0.00 - $0.00
$0.00
$13.59
$13.59 - $13.59
$13.59
Only 2 left!

Mercury MerCruiser 811539 is a genuine OEM idle mixture screw kit, and current Mercury dealer references show it superseded to 8M0154265. Current l...

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$0.00 - $0.00
$0.00
$13.59
$13.59 - $13.59
$13.59

Mercury MerCruiser Carburetor Spacer Quad Ring 806237

$14.54 - $14.54
$14.54
$14.54
$14.54 - $14.54
$14.54
Only 2 left!

Mercury MerCruiser Quicksilver 806237 is a genuine OEM quad ring used in MerCruiser carburetor and linkage assemblies. Current Mercury parts source...

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$14.54 - $14.54
$14.54
$14.54
$14.54 - $14.54
$14.54

Mercury MerCruiser 2-Barrel Carburetor Repair Kit 823427A1

$54.64 - $54.64
$54.64
$54.64
$54.64 - $54.64
$54.64
Only 1 left!

Mercury MerCruiser Quicksilver 823427A1 is a genuine OEM Rochester 2-barrel carburetor repair kit for older MerCruiser GM-based 4-cylinder and 6-cy...

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$54.64 - $54.64
$54.64
$54.64
$54.64 - $54.64
$54.64

Mercury FourStroke Carburetor Repair Kit 854256

$126.75 - $126.75
$126.75
$126.75
$126.75 - $126.75
$126.75
Only 2 left!

Mercury 854256 is a genuine OEM carburetor repair kit for select carbureted Mercury FourStroke outboards. Current Mercury catalog listings show 854...

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$126.75 - $126.75
$126.75
$126.75
$126.75 - $126.75
$126.75

Mercury MerCruiser Fuel Pressure Regulator Kit 861126A1

$295.06 - $295.06
$295.06
$295.06
$295.06 - $295.06
$295.06
Only 1 left!

Mercury MerCruiser Quicksilver 861126A1 is a genuine OEM fuel pressure regulator used on a range of MerCruiser MPI sterndrive and inboard engines. ...

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$295.06 - $295.06
$295.06
$295.06
$295.06 - $295.06
$295.06

Volvo Penta Idle Air Control Valve 3843751

$504.00 - $504.00
$504.00
$504.00
$504.00 - $504.00
$504.00
Only 1 left!

Volvo Penta 3843751 is an idle air control valve used in select Volvo Penta gasoline engine applications. Based on the part naming you provided, th...

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$504.00 - $504.00
$504.00
$504.00
$504.00 - $504.00
$504.00

Volvo Penta Water-in-Fuel Sensor 3808616 – D3 / D4 / D6 Diesel

$181.00 - $181.00
$181.00
$181.00
$181.00 - $181.00
$181.00
Only 1 left!

Volvo Penta 3808616 is a genuine OEM sensor used in select Volvo Penta diesel fuel-system applications. Current parts references place this part in...

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$181.00 - $181.00
$181.00
$181.00
$181.00 - $181.00
$181.00

Volvo Penta Fuel Line O-Ring 3850424

$4.20 - $4.20
$4.20
$4.20 - $4.20
$4.20
Only 3 left!

Volvo Penta 3850424 is a genuine OEM O-ring used in select Volvo Penta fuel-system applications. Current parts references consistently identify thi...

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$4.20 - $4.20
$4.20
$4.20 - $4.20
$4.20