Top 9 Filler Neck with Vented Cap – Powersports Gas Caps

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1. Speedway Motors

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Aluminum Gas/Oil Tank Filler Neck with Twist-On Vented Cap

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Speedway Motors #ad - Premium aluminum construction. Bung. Bung is 1 1/8" tall without the cap and 1 1/2" tall with the cap. Weld-in 2. 3" o. D. These filler necks come with a vented cap which vents to the underside of the cap.
BrandSpeedway Motors #ad
ManufacturerSpeedway Motors #ad
Height1.5 Inches
Length2.8 Inches
Weight0.25 Pounds
Width2.8 Inches
Part Number6175021

2. Speedway Motors

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Steel Gas/Oil Tank Filler Neck with Twist-On Vented Cap

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Speedway Motors #ad - Cap is 2-3/4" diameter making it large enough to use as a fuel filler. Features a vented cap which vents to the underside to release pressure buildup. If you are looking for a basic filler neck and cap for your custom build or repair then this kit is for you. 2-1/4" od steel neck is easily welded to steel tanks. Cap is zinc plated to resists corrosion.
BrandSpeedway Motors #ad
ManufacturerSpeedway Motors #ad
Height1.5 Inches
Length2.5 Inches
Width2.5 Inches
Part Number6175020

3. Speedway Motors

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Aircraft-Style Flush-Mount Fuel Fill Filler Neck and Cap

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Speedway Motors #ad - Cap features a positive seal, flip-up 1/4-turn handle, and a chain to secure it to the gas filler neck. Hole in tank needs to be 3-3/4" for cap to sit flush. Includes cap, gasket, chain, fuel filler neck, and all hardware. Offers excellent aerodynamic performance, large fill opening and attractive appearance. Polyethylene cap is vented.
BrandSpeedway Motors #ad
ManufacturerSpeedway Motors #ad
Height2 Inches
Length5 Inches
Weight1 Pounds
Width5 Inches
Part Number91076510

4. Bung King

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BungKing Vented Aluminum Filler Cap with Stainless Steel Weld in Bung

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Bung King #ad - The o. D. Filler cap od outer diameter: 1. 50". Of the bung flange is 1. 75" and the stepped down section is 1. 5". The cap is made from 6061-T6 Aluminum. Stainless steel threaded Bung size: 1. 250" x 12. Includes: aluminum Filler Cap & Stainless Steel Bung.
BrandBung King #ad
ManufacturerBungKing #ad
Part NumberVFCB-SS

5. Ispeedytech

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Ispeedytech 1"/1.5"/2"/2.5"Aluminium Alloy Weld On Filler Neck Oil Fuel Water Tank Reservoir Cap 1.5"

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Ispeedytech #ad - Overflow coolant tank caps are designed to fit OEM coolant tanks with a threaded fill neck. A clear anodized finish adds shine and durability. Cap material: 6061-T6 Aluminum alloy. A clear anodized finish adds shine and durability. Complete replacement caps are machined from billet aluminum, with a polished surface comes with pressure cap. Tem exactly the same as pictures shown. Scalloped design, making them the perfect complement to any engine bay. Part type: Coolant Reservoir Caps. Coolant reservoir cap is a great way to give your engine a custom look.
BrandIspeedytech #ad
ManufacturerIspeedytech #ad
Part NumberIspeedytech

6. Perko

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Perko 0541DPGCHR Vented Fuel Fills, Straight Neck

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Perko #ad - Integral tank vent with flame arrestor and anti-surge valve. Black plastic body. Stainless steel beaded chain. Chrome plated bronze cap. Deck plate key included.
BrandPerko #ad
ManufacturerPerko #ad
Height3.74 Inches
Length10.16 Inches
Weight0.55 Pounds
Width6.14 Inches
Part Number0541DPGCHR
Model0541DPGCHR

7. Speedway Motors

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Flanged Aluminum Gas/Oil Tank Filler Neck with Twist-On Vented Cap

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Speedway Motors #ad - Weld-in 2. 3" o. D. Premium aluminum construction. Includes a flange and gaskets. 1. 00" height, 1. 50" inside diameter and 3. 50" outside diameter. Features vented steel cap which vents to the underside of the cap. Bung.
BrandSpeedway Motors #ad
ManufacturerSpeedway Motors #ad
Height2 Inches
Length4 Inches
Weight1 Pounds
Width4 Inches
Part Number6175023

8. Coolingpart

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Aluminum Gas/Oil Tank Filler Neck Bolt on with Screw Vented Cap

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Coolingpart #ad - Premium aluminum construction. Od of the cap is 1. 750". Od of the largest section of the bung is 2. 2" the stepped down section measures. 80 . Aluminum rearend filler cap, and o-ring seal. Aluminum tapped to 1 1/4 x 12.
BrandCoolingpart #ad
ManufacturerCoolingpart #ad
Part NumberHC3003

9. PTNHZ

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PTNHZ 2"/50.8mm Aluminum Alloy Weld Billet On Filler Neck Cap Oil Fuel Water Tank Black

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PTNHZ #ad - Complete replacement caps are machined from billet aluminum, with a polished surface comes with pressure cap. Coolant reservoir cap is a great way to give your engine a custom look. A clear anodized finish adds shine and durability. Overflow coolant tank caps are designed to fit OEM coolant tanks with a threaded fill neck. Scalloped design, making them the perfect complement to any engine bay. Cap size: 1" /25. 4mm, 2"/508mm, 2. 5"/63. 5mm. Please buy according to your needs and the size in the picture.
BrandPTNHZ #ad
ManufacturerPTNHZ #ad
Part NumberUS-DDRC0