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Your New Favorite Chase Bays -20an / 1.50in (38mm) Normal Hose Raised Inline Filler Neck W/cap Perfect For Gifting [XU3CBsmv]

$35.99 $115.99 -69%

Chase Bays Raised Inline Filler Neck with Cap The Chase Bays Raised Inline Filler Neck is a revolutionary solution for enhancing the cooling system of your vehicle. Designed with a focus on both aesthetics and functionality, this innovative filler ne

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Chase Bays Raised Inline Filler Neck with Cap

The Chase Bays Raised Inline Filler Neck is a revolutionary solution for enhancing the cooling system of your vehicle. Designed with a focus on both aesthetics and functionality, this innovative filler neck addresses common issues faced by enthusiasts and engine swap experts. Its unique raised fill point ensures effortless bleeding of the system, eliminating the persistent problem of air bubbles that accumulate in the coolant passages. With its modular design, the filler neck offers compatibility with a wide range of applications, making it a versatile choice for various vehicles.

Product Specifications and Features

Crafted from high-quality 6061 billet aluminum, the Chase Bays Raised Inline Filler Neck is both durable and lightweight. It features a raised fill point, elevated 3.75 inches from the center of the lower fitting to the cap seal, providing an ideal solution for engines with lower radiator fill points. The filler neck is available in a "Raw Aluminum Weld-On" option, allowing for direct welding to the upper water neck. It comes with -20AN female ORB threads and includes adapters for 99% of applications, including 1.38" and 1.5" normal hose connections, 16AN, 20AN, and 20AN ORB. Additionally, the filler neck includes two 1/8 NPT ports for accessories like water temperature sensors and fan thermoswitches, with matching SS NPT plugs for a seamless installation.

Practical Uses and Benefits

The Chase Bays Raised Inline Filler Neck is an essential upgrade for any vehicle looking to improve its cooling system. Its raised fill point simplifies the bleeding process, ensuring a clean and efficient system. The modular design allows for easy installation and compatibility with a wide range of vehicles, making it a popular choice among engine swap enthusiasts and professional mechanics. The additional side ports provide flexibility for plumbing accessories, enhancing the overall functionality of the cooling system. With its sleek, black anodized finish and laser-etched Chase Bays logo, this filler neck not only improves performance but also adds a touch of style to your vehicle.

What Our Customers Say

January 2, 2026

Absolutely no complaints!

It's a must have. Just trust me.

- Brooks P..

January 2, 2026

Absolutely no complaints!

This is a really good product.

- Dayna Z..

January 2, 2026

Absolutely no complaints!

I'm happy with my purchase.

- Janie V..

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