Skip to content
Celebrating over 50 years of Trusted Marine Service
Over 50 years of Trusted Marine Service

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Inspect hosesLook for cracking, swelling, stiffness, chafe, loose clamps, and outdated fuel line ratings.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

Mercury MerCruiser Quicksilver Fuel Filter 8M0157616

$60.86 - $60.86
$60.86
$60.86
$60.86 - $60.86
$60.86
9 in stock

Mercury MerCruiser / Quicksilver Fuel Filter – 8M0157616 Protect your engine from fuel contamination with the genuine Mercury Marine / Quicksilver ...

View full details
$60.86 - $60.86
$60.86
$60.86
$60.86 - $60.86
$60.86

Mercury Quicksilver Water Separating Fuel Filter Kit 18458Q4 – Blue Sensor

$48.39 - $48.39
$48.39
$48.39 - $48.39
$48.39
Only 2 left!

Overview Part Number: 18458Q4 (service format: 35-18458Q4) Brand: Quicksilver / Mercury Marine Official Product Type: Water Separating Fuel Filter ...

View full details
$48.39 - $48.39
$48.39
$48.39 - $48.39
$48.39

Mercury MerCruiser Quicksilver Fuel Filter 805406

$10.31 - $10.31
$10.31
$10.31 - $10.31
$10.31
Only 1 left!

Mercury MerCruiser / Quicksilver Fuel Filter – 805406 Maintain clean fuel delivery and protect critical engine components with the genuine Mercury ...

View full details
$10.31 - $10.31
$10.31
$10.31 - $10.31
$10.31

Mercury MerCruiser Quicksilver Carburetor Repair Kit 804844002

$144.97 - $144.97
$144.97
$144.97 - $144.97
$144.97
Only 1 left!

Mercury MerCruiser Quicksilver 804844002 is a genuine carburetor repair kit for select MerCruiser engines using the newer MerCarb two-barrel carbur...

View full details
$144.97 - $144.97
$144.97
$144.97 - $144.97
$144.97

Mercury MerCruiser Quicksilver Fuel Filter 802893Q01

$24.74 - $24.74
$24.74
$24.74 - $24.74
$24.74
Only 2 left!

Mercury MerCruiser / Quicksilver Fuel Filter – 802893Q01 Protect your engine from fuel contamination with the genuine Mercury Marine / Quicksilver ...

View full details
$24.74 - $24.74
$24.74
$24.74 - $24.74
$24.74

Mercury MerCruiser Quicksilver Fuel Pump Rod 35377

$71.41 - $71.41
$71.41
$71.41 - $71.41
$71.41
Only 1 left!

Maintain reliable fuel delivery with the genuine Mercury Marine / Quicksilver 35377 Fuel Pump Rod. This OEM push rod is used in engines equipped wi...

View full details
$71.41 - $71.41
$71.41
$71.41 - $71.41
$71.41

Mercury MerCruiser Quicksilver Fuel System Connector 8M2010476

$13.04 - $13.04
$13.04
$13.04 - $13.04
$13.04
Only 4 left!

MerCruiser OEM connector fitting used in fuel module and fuel system assemblies on various MerCruiser engines. This precision-engineered component ...

View full details
$13.04 - $13.04
$13.04
$13.04 - $13.04
$13.04

Mercury MerCruiser Quicksilver Mechanical Fuel Pump 8M0112244 | 6.7L Diesel

$119.99 - $119.99
$119.99
$119.99 - $119.99
$119.99
Only 4 left!

Mercury MerCruiser Quicksilver Mechanical Fuel Pump 8M0112244 Part Number: 8M0112244 Brand: Mercury Marine / MerCruiser / Quicksilver Official...

View full details
$119.99 - $119.99
$119.99
$119.99 - $119.99
$119.99

Mercury MerCruiser Fuel Filter - 898101093

$98.50 - $98.50
$98.50
$98.50 - $98.50
$98.50
Only 1 left!

Premium OEM Mercury MerCruiser fuel filter for marine engine fuel systems. This high-quality filter ensures clean fuel delivery, protecting your en...

View full details
$98.50 - $98.50
$98.50
$98.50 - $98.50
$98.50

Mercury MerCruiser Fuel Filter - 8M0046752

$27.66 - $27.66
$27.66
$27.66 - $27.66
$27.66
Only 2 left!

Mercury MerCruiser / Quicksilver Fuel Filter – 8M0046752 Maintain clean fuel delivery and protect your engine with the genuine Mercury Marine / Qui...

View full details
$27.66 - $27.66
$27.66
$27.66 - $27.66
$27.66

Mercury MerCruiser Fuel Filter Kit - 8M0088825

$145.33 - $145.33
$145.33
$145.33 - $145.33
$145.33
Only 4 left!

Mercury MerCruiser / Quicksilver Fuel Filter Kit – 8M0088825 Maintain clean fuel delivery and protect your outboard engine with the genuine Mercury...

View full details
$145.33 - $145.33
$145.33
$145.33 - $145.33
$145.33

Mercury MerCruiser Fuel Filter - 8M0090809

$10.89 - $10.89
$10.89
$10.89 - $10.89
$10.89
Only 2 left!

Mercury MerCruiser / Quicksilver Fuel Filter – 8M0090809 Maintain clean fuel delivery and protect your engine with the genuine Mercury Marine / Qui...

View full details
$10.89 - $10.89
$10.89
$10.89 - $10.89
$10.89

Mercury MerCruiser Fuel Filter - 8M0093688

$93.62 - $93.62
$93.62
$93.62
$93.62 - $93.62
$93.62
Only 3 left!

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

Mercury MerCruiser Fuel Filter Kit - 8M0106635

$85.42 - $85.42
$85.42
$85.42
$85.42 - $85.42
$85.42
Only 4 left!

Mercury MerCruiser / Quicksilver Fuel Filter Kit – 8M0106635 Maintain clean fuel delivery and protect your engine with the genuine Mercury Marine /...

View full details
$85.42 - $85.42
$85.42
$85.42
$85.42 - $85.42
$85.42

Mercury MerCruiser Fuel Filter Kit - 8M0126144

$152.95 - $152.95
$152.95
$152.95 - $152.95
$152.95
Only 4 left!

Mercury MerCruiser / Quicksilver Fuel Filter Kit – 8M0126144 Maintain clean fuel delivery and protect your outboard engine with the genuine Mercury...

View full details
$152.95 - $152.95
$152.95
$152.95 - $152.95
$152.95

Mercury MerCruiser Fuel Filter - 8M0157133

$32.99 - $32.99
$32.99
$32.99 - $32.99
$32.99
Only 5 left!

Mercury MerCruiser / Quicksilver Fuel Filter – 8M0157133 Maintain clean fuel delivery and protect your outboard engine with the genuine Mercury Mar...

View full details
$32.99 - $32.99
$32.99
$32.99 - $32.99
$32.99

Mercury MerCruiser Fuel Filter Kit - 8M0157707

$412.05 - $412.05
$412.05
$412.05 - $412.05
$412.05
Only 1 left!

Mercury MerCruiser Fuel Filter Kit – 8M0157707 Maintain clean fuel delivery and protect your marine engine with the genuine Mercury Marine 8M015770...

View full details
$412.05 - $412.05
$412.05
$412.05 - $412.05
$412.05

Mercury MerCruiser Fuel Filter - 8M0204703

$73.23 - $73.23
$73.23
$73.23
$73.23 - $73.23
$73.23
Only 4 left!

Mercury MerCruiser Fuel Filter – 8M0204703 Maintain clean fuel delivery and protect your engine with the genuine Mercury MerCruiser 8M0204703 Fuel ...

View full details
$73.23 - $73.23
$73.23
$73.23
$73.23 - $73.23
$73.23

Volvo Penta Fuel Filter Insert - 3581078

$29.60 - $29.60
$29.60
$29.60
$29.60 - $29.60
$29.60
Only 3 left!

Volvo Penta Fuel Filter Insert – 3581078 Maintain clean fuel delivery and protect your Volvo Penta engine with the genuine Volvo Penta 3581078 Fuel...

View full details
$29.60 - $29.60
$29.60
$29.60
$29.60 - $29.60
$29.60

Volvo Penta 20998367 Fuel Filter / Water Separator — OEM Spin-On

$126.00 - $126.00
$126.00
$126.00 - $126.00
$126.00
Only 4 left!

Volvo Penta 20998367 — OEM Fuel Filter / Water Separator Part Number: 20998367 Brand: Volvo Penta Official Product Type: Fuel Filter / Water Separ...

View full details
$126.00 - $126.00
$126.00
$126.00 - $126.00
$126.00
Sold out

Volvo Penta Fuel Filter 21139810

$91.91 - $91.91
$91.91
$91.91 - $91.91
$91.91
Out of stock

Volvo Penta Fuel Filter – Part Number 21139810 The Volvo Penta Fuel Filter (OEM Part No. 21139810) is a genuine OEM spin-on fuel filter for Volvo ...

View full details
$91.91 - $91.91
$91.91
$91.91 - $91.91
$91.91
Sold out

Volvo Penta Fuel Filter Spin-On M16x1.5 21624740

$66.60 - $66.60
$66.60
$66.60 - $66.60
$66.60
Only 3 left!

The Volvo Penta Fuel Filter 21624740 is a genuine OEM spin-on fuel filter for compatible Volvo Penta diesel marine engines. It helps protect the fu...

View full details
$66.60 - $66.60
$66.60
$66.60 - $66.60
$66.60

Volvo Penta Fuel Filter Kit - SKU 3817517

$195.00 - $195.00
$195.00
$195.00 - $195.00
$195.00
Only 2 left!

Premium OEM Volvo Penta fuel filter kit for marine engine fuel systems. This complete kit includes all necessary filters to ensure clean fuel deliv...

View full details
$195.00 - $195.00
$195.00
$195.00 - $195.00
$195.00

Volvo Penta Fuel Cooler | 23485230

$1,104.00 - $1,104.00
$1,104.00
$1,104.00 - $1,104.00
$1,104.00
Only 2 left!

OEM Volvo Penta fuel cooler for marine engines. Part Number: 23485230 Superseded From: 40005787 Fits:   Designed to Fit: D6-330A-...

View full details
$1,104.00 - $1,104.00
$1,104.00
$1,104.00 - $1,104.00
$1,104.00

Volvo Penta Fuel Pipe | 3589017

$263.00 - $263.00
$263.00
$263.00 - $263.00
$263.00
Only 1 left!

OEM Volvo Penta fuel pipe for marine engines.Part Number: 3589017

$263.00 - $263.00
$263.00
$263.00 - $263.00
$263.00

Volvo Penta Fuel Pump | 23306461

$2,231.00 - $2,231.00
$2,231.00
$2,231.00 - $2,231.00
$2,231.00
Only 1 left!

OEM Volvo Penta fuel pump for marine engines. Part Number: 23306461 previous part numbers were 3860210, 38691355, 3594444, 21397771, 21545138, 2160...

View full details
$2,231.00 - $2,231.00
$2,231.00
$2,231.00 - $2,231.00
$2,231.00

3/8" Nylon Tubing - Per Foot - Marine Fuel and Water Line

$4.46 - $4.46
$4.46
$4.46 - $4.46
$4.46
75 in stock

3/8" nylon tubing sold by the foot for marine fuel and water line applications. This durable nylon tubing provides reliable fluid transfer with exc...

View full details
$4.46 - $4.46
$4.46
$4.46 - $4.46
$4.46

Sierra Marine Fuel Pump 18-7267 – MerCruiser / Volvo Penta GM V8 Mechanical Fuel Pump

$332.85 - $332.85
$332.85
$332.85 - $332.85
$332.85
Only 1 left!

The Sierra 18-7267 Fuel Pump is a mechanical, engine-mounted fuel pump designed for GM-based V8 marine engines used in MerCruiser, Volvo Penta, and...

View full details
$332.85 - $332.85
$332.85
$332.85 - $332.85
$332.85

Sierra Marine Fuel Pump 18-7278 – Mercury / Mariner 4HP-15HP 2-Stroke Fuel Delivery Pump

$507.15 - $507.15
$507.15
$507.15 - $507.15
$507.15
Only 1 left!

The Sierra 18-7278 Fuel Pump is a diaphragm-style fuel pump designed to deliver consistent fuel flow in small horsepower Mercury and Mariner 2-stro...

View full details
$507.15 - $507.15
$507.15
$507.15 - $507.15
$507.15

Sierra Marine Electric Fuel Pump 18-7333

$446.62 - $446.62
$446.62
$446.62 - $446.62
$446.62
Only 1 left!

The Sierra Marine 18-7333 Electric Fuel Pump is a universal 12-volt marine fuel pump designed for gasoline and diesel fuel applications. This rotar...

View full details
$446.62 - $446.62
$446.62
$446.62 - $446.62
$446.62

Sierra Marine Fuel Pump 18-7268 – MerCruiser / Volvo Penta Mechanical Fuel Pump GM V6 V8

$385.89 - $385.89
$385.89
$385.89 - $385.89
$385.89
Only 1 left!

The Sierra 18-7268 Fuel Pump is a mechanical, engine-mounted fuel pump designed for GM-based marine inboard and sterndrive engines. This pump deliv...

View full details
$385.89 - $385.89
$385.89
$385.89 - $385.89
$385.89

Volvo Penta Fuel Filter - 21492771

$32.40 - $32.40
$32.40
$32.40 - $32.40
$32.40
Only 5 left!

Volvo Penta Fuel Filter – 21492771 Maintain clean fuel delivery and protect your Volvo Penta diesel engine with the genuine Volvo Penta 21492771 Fu...

View full details
$32.40 - $32.40
$32.40
$32.40 - $32.40
$32.40

Mercury Banjo Bolt - 8M6002655

$217.49 - $217.49
$217.49
$217.49 - $217.49
$217.49
Only 4 left!

Genuine Mercury banjo bolt engineered for secure hydraulic and fuel line connections in marine engine systems. This OEM hollow bolt provides reliab...

View full details
$217.49 - $217.49
$217.49
$217.49 - $217.49
$217.49

Mercury MerCruiser Carburetor Float 91691

$19.81 - $19.81
$19.81
$19.81 - $19.81
$19.81
Only 1 left!

Genuine MerCruiser OEM float engineered for precision fit and reliable fuel level control in marine engine fuel systems. This factory-specification...

View full details
$19.81 - $19.81
$19.81
$19.81 - $19.81
$19.81

Mercury 3/8" Female Fuel Connector - SCE-05791

$9.12 - $9.12
$9.12
$9.12 - $9.12
$9.12
Only 1 left!

Mercury-compatible 3/8" female fuel connector designed for reliable fuel line connections in marine applications. This precision-manufactured conne...

View full details
$9.12 - $9.12
$9.12
$9.12 - $9.12
$9.12

Crusader Throttle Body Mounting Gasket | MP7.4L MP8.1L MP6.0L | OEM Part RM0251

$2.00 - $2.00
$2.00
$2.00 - $2.00
$2.00
Only 2 left!

Crusader Throttle Body Mounting Gasket — OEM Part RM0251 Genuine Crusader / PCM OEM throttle body mounting gasket for compatible Crusader MP7.4L, ...

View full details
$2.00 - $2.00
$2.00
$2.00 - $2.00
$2.00

Crusader Fuel/Water Separator – OEM Part RA080033

$227.82 - $227.82
$227.82
$227.82 - $227.82
$227.82
Only 2 left!

Crusader Fuel/Water Separator – OEM Part RA080033Protect your engine’s fuel system from the water and contamination that are a constant reality in ...

View full details
$227.82 - $227.82
$227.82
$227.82 - $227.82
$227.82

Rail-Mounted Motor Bracket - 228x150mm - For 25mm Rails - White - Auxiliary Outboard Mount

$95.86 - $95.86
$95.86
$95.86 - $95.86
$95.86
17 in stock

Rail-Mounted Motor Bracket - 228x150mm - For 25mm Rails - WhitePermanent rail-mounted motor bracket designed for auxiliary outboard engines. This r...

View full details
$95.86 - $95.86
$95.86
$95.86 - $95.86
$95.86

Transom Pad - 320x220mm (12-19/32" x 8-21/32") - White - Outboard Clamp Protection

$10.68 - $10.68
$10.68
$10.68 - $10.68
$10.68
50 in stock

Transom Pad - 320x220mm - White - Outboard Clamp ProtectionProtective transom pad designed to prevent outboard clamp damage on transoms. This rigid...

View full details
$10.68 - $10.68
$10.68
$10.68 - $10.68
$10.68

LZ Hydrofoil Stabilizer - Up to 50 HP - Torque Control System - Outboard Performance

$43.18 - $43.18
$43.18
$43.18 - $43.18
$43.18
17 in stock

LZ Hydrofoil Stabilizer - Up to 50 HP - Torque Control SystemAdvanced hydrofoil stabilizer designed for outboard motors up to 50 HP. The LZ torque ...

View full details
$43.18 - $43.18
$43.18
$43.18 - $43.18
$43.18

Synthetic 75W90 Gear Oil – Marine Lower Unit & Transmission Oil

$24.92 - $24.92
$24.92
$24.92 - $24.92
$24.92
Only 1 left!

Synthetic 75W90 Marine Gear OilA full-synthetic, GL-5 rated gear oil engineered for the unique demands of marine drivetrains. Whether you're servic...

View full details
$24.92 - $24.92
$24.92
$24.92 - $24.92
$24.92

LZ Hydrofoil - For Outboards Over 50 HP - Stainless Steel

$71.91 - $71.91
$71.91
$71.91 - $71.91
$71.91
Only 5 left!

LZ Hydrofoil for Outboard Motors Over 50 HPThe LZ torque control system ensures the ultimate in precise and effortless steering. This premium hydro...

View full details
$71.91 - $71.91
$71.91
$71.91 - $71.91
$71.91

INDUSTRIAL Inspection Hatch - 8" (201mm) Internal Diameter - White

$63.63 - $63.63
$63.63
$63.63 - $63.63
$63.63
20 in stock

INDUSTRIAL Marine Inspection Hatch - 8" (201mm)Premium marine inspection hatch designed for easy access to fuel lines, electrical cables, gauges, c...

View full details
$63.63 - $63.63
$63.63
$63.63 - $63.63
$63.63

INDUSTRIAL Inspection Hatch - 8" (201mm) Internal Diameter - Grey

$63.63 - $63.63
$63.63
$63.63 - $63.63
$63.63
20 in stock

INDUSTRIAL Marine Inspection Hatch - 8" (201mm)Premium marine inspection hatch designed for easy access to fuel lines, electrical cables, gauges, c...

View full details
$63.63 - $63.63
$63.63
$63.63 - $63.63
$63.63

INDUSTRIAL Inspection Hatch - 10" (254mm) Internal Diameter - White

$86.53 - $86.53
$86.53
$86.53 - $86.53
$86.53
16 in stock

INDUSTRIAL Marine Inspection Hatch - 10" (254mm)Premium marine inspection hatch designed for easy access to fuel lines, electrical cables, gauges, ...

View full details
$86.53 - $86.53
$86.53
$86.53 - $86.53
$86.53

INDUSTRIAL Inspection Hatch - 10" (254mm) Internal Diameter - Grey

$86.53 - $86.53
$86.53
$86.53 - $86.53
$86.53
16 in stock

INDUSTRIAL Marine Inspection Hatch - 10" (254mm)Premium marine inspection hatch designed for easy access to fuel lines, electrical cables, gauges, ...

View full details
$86.53 - $86.53
$86.53
$86.53 - $86.53
$86.53

Fuel Level Gauge - 240-33 Ohm - 2" (52mm) Diameter

$71.91 - $71.91
$71.91
$71.91 - $71.91
$71.91
10 in stock

Marine Fuel Level Gauge - 240-33 OhmPrecision fuel level gauge designed for accurate fuel tank monitoring. Features 240-33 ohm resistance range com...

View full details
$71.91 - $71.91
$71.91
$71.91 - $71.91
$71.91

Fuel/Water Tank Sensor - 240-33 Ohm - 6" (150mm) Height

$92.08 - $92.08
$92.08
$92.08 - $92.08
$92.08
Only 4 left!

Marine Fuel/Water Tank Level SensorPrecision tank level sensor designed for accurate fuel and water tank monitoring. Features 240-33 ohm resistance...

View full details
$92.08 - $92.08
$92.08
$92.08 - $92.08
$92.08