Steel Gas/ Oil

Universal Tank Application: Designed for custom builds or repairs, suitable for use on both fuel and oil tanks, Weld-On Steel Neck: Mild steel filler neck features a natural finish and 2-1/4" outside diameter for easy welding to steel tanks, Vented Twist-On Cap: Includes a twist-on steel cap that vents to the underside to help relieve pressure buildup, Zinc Plated Finish: Cap features a durable zinc-plated coating and includes a rubber gasket for a secure seal, Practical Filler Size: Cap measures 2-3/4" in diameter, making it large enough for convenient filling during service or refueling Steel Gas/Oil Tank Filler Neck with Twist-On Vented Cap Sku # 6175020 Mfr. Part # 6175020 Condition New Brand Speedway Motors Sold Each Details

If you’re looking for a basic filler neck and cap for your custom build or repair, we have a great economical kit for you. 

A filler neck made from mild steel and a natural finish can be welded to any steel fuel or oil tank and is 2.75” in diameter, 1.25” in height with a 2.25” O.D. bung. 

A twist-on style, vented steel cap is included with a durable zinc finish. The cap is vented to the underside and includes a rubber gasket seal. This cap is 1.875” across the lock tabs. 

Make your tank build simple with our Universal Steel Oil & Fuel Tank Filler Neck with Cap. 

• Mild steel filler neck welds easily to any steel tank
• Twist-on, vented, zinc-plated steel cap is included
• Works for fuel or oil tanks

Specs MFG. Part # 6175020 Overall Length 3.17" Overall Height 1.625" Inside Diameter 1.50" Outside Diameter 2.25" Material Type Steel Finish Natural Gasket(s) Included Yes Sold in Quantity Each Notes Filler neck is natural finish, cap is zinc plated. Reviews It's fits well Rated by Jay on September 07, 2025

Summary: Replacement parts for a 580 case fuel tank the original pipe and filler cap was rusted through. Used a 2 inch x 10 inch aluminized exhaust pipe and attached the cat to it.

Yes, I recommend this product.

Solid! Rated by AK on March 20, 2025

Summary: Ended up using it for a modified motorcycle fuel tank setup. Excellent quality!

Yes, I recommend this product.

I would Rated by None on March 29, 2024

Summary: Used it in a gas tank worked good

Yes, I recommend this product.

Yes Rated by Bruce on August 08, 2021

Summary: Used om my 30 tub

Yes, I recommend this product.

Related Items / Suggested Parts Filler Neck Replacement Twist Cap, 2-1/2 Inch Aluminum Fuel Tank Cap and Neck, 2 Inch Outside Diameter Aluminum Gas/Oil Tank Filler Neck with Twist-On Vented Cap Tech Support We're here to help before and after your purchase. If you have a question or need assistance with one of our products, please contact us through eBay Messaging and a knowledgeable Speedway Motors team member will be happy to help. About Speedway Motors is America’s Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 74 years. Founded in 1952 by “Speedy” Bill Smith – a racer and street rodder himself – Speedway has grown from a one-man operation to become the world’s largest manufacturer, distributor and retailer of street rod and racing products. Our industry-leading fast delivery is the result of same-day shipping from our state-of-the-art, centrally located 500,000 sq. ft. headquarters. Speedway’s size offers customers unmatched product selection and low pricing, while our excellent technical support and customer service have made us a recognized leader in the rodding and racing industries.