Updated: 25 Feb 2025

fuel tank cap for boats

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Updated: 25 Feb 2025

#1

Best Choice
Perko 0540DPG99A Cap, O-Ring and Retainer for Vented Fuel Fills for 1-1/2" Angled Neck Vented Fills - Gas

9.9

Perko

-31%

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Why we love it

Durable chrome plated bronze cap for longevity.

Includes a beaded chain for added security.

Comes with a deck plate key for convenience.

Main highlights

Chrome Plated Bronze Cap
The cap features a robust chrome plated bronze construction, ensuring durability and resistance to corrosion.

Ideal for Boat Fuel Tanks
Perfect replacement for various boat models, especially those manufactured before 2010 EPA fuel cap requirements.

Exact Fit and Easy Installation
Customers consistently praise the cap for its perfect fit and straightforward installation process, making it a reliable replacement.

-31%
#2

Value for Money
Perko 1319DPGBLK Vented Fuel Fills , black

9.6

Perko

-21%

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Main highlights

No ground wire required

Easy installation

Black polymer construction.Fit Type: Universal Fit

-21%
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#3
Vent Gas Cap for Boat Fuel Tank Marine Manual Fuel Tank Caps Replacement Moeller Tempo Fuel Tank (621501-10)

9.3

Ahuliao

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Main highlights

【Replacement Part Number】621501-10

【Material】The boat gas cap replacement is made of durable plastic, which not only ensures the durability of the fuel tank cap, but also has good chemical resistance. It can resist the erosion of acids, alkalis and solvents, and can maintain performance even in harsh environments.

【Compatibility】The boat gas tank cap is suitable for a variety of fuel tank models, including 031103, 031106, 031109, 031112, 031212, 620003, 620049, 630012, 630013, 630014, 620040, 720040, 730014, and 730025.
#4
Manual Vent Gas Cap Compatible with Old Style Portable Boat Gas Tank, 621501-10 Gas Tank Cap, Black

9.2

Alocs

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Main highlights

【Manually Vented】Our manually vented gas cap features a twist valve for adjustable ventilation. Fits tight with no leaks and the vent screw is easy to turn for release and close.

【Compatibility】Boat gas tank cap fits A'ttwood 12 gallon, 6 gallon and 3 gallon tanks, B'ass Tracker boat tank, S'cepter 12 gal and 6 gallon tank, 3 gallon Q'uicksilver plastic gas tank, old 6 gallon plastic Dura-Tank Essence, M'ercury plastic tank, Y’amaha and more.

【621501-10 Manual Vent Gas Cap】 Vented fuel tank cap is specifically designed to be compatible with old style portable M'oeller and T'empo fuel tanks.
#5
316 Stainless Steel Polished Boat Fuel Tank Cap, Marine Boat Fill Port Marine Hardware,Boat Carpet Replacement

9.0

PerGar

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Main highlights

Versatile Application: Whether you are a boat, yacht, or the owner of a caravan, RV, truck, tractor, and trailer fuel tank, our marine fuel tank caps are the perfect choice.

Rigorous Workmanship and Excellent Quality: Every detail of our marine fuel tank caps is produced in strict accordance with standards to ensure product accuracy, polish, brightness and flatness, making it not only durable but also beautiful.The process is rigorous, and every interval in the product is made according to the standard.

Made of High-Quality : Our marine fuel tank caps are crafted from marine-grade 316 stainless steel, which has anti-rust and corruption-resistant properties to overcome the challenges of the marine environment.Adopts premium 316 stainless steel material,rust and corruption resistant.
#6
Vent Gas Cap Replacement for Boat Fuel Tank, Marine Manual Fuel Tank Part for Moeller Tempo Gas Tank 621501-10, Black, 1 Pack

8.7

Dairrr Fuuu

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Main highlights

【Wide Compatibility】The boat fuel tank gas cap compatible with Moeller Tempo gas tank, also fit for a variety of fuel tank models, including 031103, 031106, 031109, 031112, 031212, 620003, 620049, 630012, 630013, 630014, 620040, 720040, 730014, and 730025. The Part Number is 621501-10.

【Sealing Fuel Tank】The manually vented gas cap creates a tight seal with the fuel tank opening, prevents fuel from leaking out. The marine gas cap also stops air and water from entering the fuel tank，prevents the mixing of water and oil, thereby avoiding interference with the combustion process and corrosion of the fuel system.

【Manual Venting】The marine fuel tank cap features a twist valve for adjustable ventilation, has a manual venting function, which can prevent fule tank from internal collapse or expansion due to changes in external factors.
#7
Silipull 2 Pcs Manual Vent Gas Tank Cap Fuel Vented Gas Cap Replacement, Black

8.6

Silipull

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Main highlights

Proper Dimensions: the vented gas cap comes in an approximate size of 2.95 x 2.95 x 1.46 inches/ 7.5 x 7.5 x 3.7 cm, ensuring a proper fit

Good Compatibility: our 2 pieces manual vent gas tank caps are suitable for old style portable fuel tanks; Made of plastic, they are portable but reliable and sturdy enough for daily use

Ease of Use: our vented gas cap replacement is manually vented; Align the vented fuel tank cap with the notch and turn clockwise to completely tighten the fuel tank cap; Push down and twist counter clockwise to remove the fuel tank cap
#8
Attwood 88TC06-7 High-Flow Ratcheting Gas Cap with Tether for up to 350 HP Engines

8.5

Attwood

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Main highlights

Tether prevents cap loss

Standard 2 ¼ inch neck for convenience

Easy-to-grip cap features ratcheting noise so you know it’s properly sealed
#9
QWORK Boat Fuel Deck Fill/Filler with Keyless Cap - Marine Grade Stainless Steel 316, 1-1/2" (38mm) Mirror- Polished

8.4

QWORK

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Main highlights

Superior Design: The keyless cap design features a built-in tab for easy opening and closing, eliminating the need for additional keys.

Secure Retaining Chain: Equipped with a stainless steel retaining chain, this deck filler prevents accidental cap loss, ensuring your marine equipment's safety.

Durable Material: Crafted from marine grade stainless steel 316, this Boat Fuel Deck Fill/Filler ensures durability and resistance to corrosion, making it ideal for long-term marine use.
#10
Boat Motor 36-816976 Q1 T1 CAP Assembly Fuel-Manual Vent for Mercury Mercruiser Quicksilver Mariner Outboard 2/4-stroke Engine

8.2

ITACO

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Main highlights

For Mercury Mariner Outboard part number: 36-816976Q1, 36-816976T1 (Please check part number before purchase!!)

For Mercury Mariner Mercruiser Quicksilver Outboard Engine

100% Made in Taiwan Quality

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fuel tank cap for boats

Perko 0540DPG99A Cap, O-Ring and Retainer for Vented Fuel Fills for 1-1/2" Angled Neck Vented Fills - Gas

9.9

Why we love it

Main highlights

Perko 1319DPGBLK Vented Fuel Fills , black

9.6

Main highlights

Vent Gas Cap for Boat Fuel Tank Marine Manual Fuel Tank Caps Replacement Moeller Tempo Fuel Tank (621501-10)

9.3

Main highlights

Manual Vent Gas Cap Compatible with Old Style Portable Boat Gas Tank, 621501-10 Gas Tank Cap, Black

9.2

Main highlights

316 Stainless Steel Polished Boat Fuel Tank Cap, Marine Boat Fill Port Marine Hardware,Boat Carpet Replacement

9.0

Main highlights

Vent Gas Cap Replacement for Boat Fuel Tank, Marine Manual Fuel Tank Part for Moeller Tempo Gas Tank 621501-10, Black, 1 Pack

8.7

Main highlights

Silipull 2 Pcs Manual Vent Gas Tank Cap Fuel Vented Gas Cap Replacement, Black

8.6

Main highlights

Attwood 88TC06-7 High-Flow Ratcheting Gas Cap with Tether for up to 350 HP Engines

8.5

Main highlights

QWORK Boat Fuel Deck Fill/Filler with Keyless Cap - Marine Grade Stainless Steel 316, 1-1/2" (38mm) Mirror- Polished

8.4

Main highlights

Boat Motor 36-816976 Q1 T1 CAP Assembly Fuel-Manual Vent for Mercury Mercruiser Quicksilver Mariner Outboard 2/4-stroke Engine

8.2

Main highlights

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