GM Genuine Parts GT231 fuel tank filler cap exterior showing a tight seal against fumes and contaminants
GM Genuine Parts GT231 gasket detail highlighting liquid-tight seal and protective function
GM Genuine Parts GT231 fuel tank filler cap exterior showing a tight seal against fumes and contaminants
GM Genuine Parts GT231 gasket detail highlighting liquid-tight seal and protective function

GM Genuine Parts GT231 Fuel Tank Filler Cap (15763227) – OE Replacement

Overview The GM Genuine Parts GT231 Fuel Tank Filler Cap is a threaded cap that seals your...
Vendor: GM GENUINE PARTS
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GM Genuine Parts GT231 fuel tank filler cap exterior showing a tight seal against fumes and contaminants

GM Genuine Parts GT231 Fuel Tank Filler Cap (15763227) – OE Replacement

£39.59
GM Genuine Parts GT231 fuel tank filler cap exterior showing a tight seal against fumes and contaminants
GM Genuine Parts GT231 gasket detail highlighting liquid-tight seal and protective function

GM Genuine Parts GT231 Fuel Tank Filler Cap (15763227) – OE Replacement

£39.59
Description
Description
x

Overview

The GM Genuine Parts GT231 Fuel Tank Filler Cap is a threaded cap that seals your vehicle's fuel filler neck with precision. It features a durable rubber gasket that forms a liquid-tight barrier to keep fuel inside while keeping water and dirt out. Some versions of this cap may include a check-valve that vents air in or out depending on tank pressure, helping balance the interior air as you drive or refuel.

Why it matters

As a GM OE replacement, the GT231 aligns with the original factory component in fit, form, and function. That means you get the same dependable performance you expect from GM vehicles, backed by GM design and manufacturing standards.

Key benefits

  • Tight seal to keep fumes contained in the fuel system
  • Prevents water, dirt, and debris from entering the fuel tank
  • GM-recommended replacement part for the GM original equipment
  • Built to GM OE specifications for consistent fit, durability, and service life

Design and compatibility

The GT231 uses a threaded design that mates with GM filler necks, delivering secure engagement and a reliable seal. The gasket is engineered to resist fuel exposure while maintaining elasticity over time, even with regular fueling.

  • Threaded cap for easy, secure installation
  • Gasket creates a reliable liquid-tight seal
  • Protects the filler neck from water and dirt
  • GM OE style fit and function for a true factory feel

Real-world use and daily driving

In everyday fueling scenarios, the cap helps maintain fuel system integrity during shifts in temperature and weather. It engages smoothly with the filler neck, reducing the chance of contamination during refueling and helping minimize fuel odors when the cap is closed properly. The possible check-valve feature (when present) supports air balance as needed during fueling and driving.

What to expect from GM OE quality

Choosing the GT231 means selecting a part manufactured to the exact GM OE standard for compatibility with your GM vehicle. The cap is built for durability under varying road and climate conditions, contributing to a long service life when installed as a genuine part.

FAQ

Q: What does the GT231 fuel tank filler cap replace?

A: It is a GM OE replacement cap designed to fit GM vehicles, delivering a reliable seal.

Q: What benefits might the GT231 cap offer in daily use?

A: It helps keep fuel fumes contained and protects the tank from contaminants; a check-valve option may assist air balance.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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