Billet Aluminum Thru-Frame Bulkhead Fitting - 3/8 NPT

Billet Aluminum Thru-Frame Bulkhead Fitting - 3/8 NPT - #160-110375NPT
The GSI Billet Aluminum Thru-Frame 3/8" NPT Fitting is engineered for builders who demand both high-performance function and flawless style. CNC-machined from premium billet aluminum and finished in a clear anodize, this fitting is built to resist corrosion while adding a high-end, polished touch to any chassis.

Measuring 3 inches in length and requiring a 7/8" hole, it is designed to integrate seamlessly with most frame rails. The dual 3/8" NPT threaded ports provide a versatile solution for fuel delivery or air suspension plumbing. By routing your lines directly through the frame, you protect them from road debris, eliminate clutter, and achieve a professional, show-quality finish.

The GSI Advantage

• Premium Billet Aluminum – Lightweight, corrosion-resistant, and CNC-machined for absolute precision.

• Clear Anodized Finish – Provides long-lasting durability and a sleek, professional appearance.

• 3″ Length & 7/8″ Hole Requirement – Engineered to fit the majority of chassis frame rail applications.

• Dual 3/8″ NPT Threaded Ports – Versatile utility for fuel lines, air suspension, or brake plumbing.

• Clean, Protected Routing – Pass lines through the frame to prevent mechanical damage and streamline your build.

Key Features & Benefits

• Universal Fit – Ideal for C10 trucks, classic car restorations, hot rods, and race cars.

• Versatile Plumbing – Compatible with both air and liquid transfer systems.

• Secure Installation – Each unit includes a dedicated nut for a tight, vibration-resistant fit.

• Show-Quality Aesthetic – Replaces messy external line clamps with a hidden, internal routing solution.

Design & Construction

• Material: CNC-Machined Billet Aluminum

• Finish: Clear Anodized

• Dimensions: 3" Length

• Installation: Requires a 7/8" diameter hole through the frame rail

• Port Size: Dual 3/8" NPT

What’s Included

• (1) Billet Aluminum Thru-Frame Fitting

• (1) Mounting Nut