BBK 1666 High Flow X-Pipe w/ Converters for 1996-1998 Ford Mustang GT 4.6L V

Vehicle Fitment

• 1996-1998 Ford Mustang GT (4.6L V8)

Fitment Notes

• Direct replacement X-pipe for 1996-1998 Mustang GT with shorty headers or stock exhaust
• Not legal for use in California or states that have adopted California emissions standards

Features

• High-flow full X-pipe design improves exhaust scavenging and flow
• Includes 2 high-flow catalytic converters for enhanced mid-range performance
• Mandrel-bent 2.5" tubing for maximum exhaust throughput
• Direct bolt-on fitment to factory or aftermarket shorty headers
• OEM-style die-stamped flanges for accurate alignment
• Factory-positioned O2 sensor bungs for simple installation
• Helps increase horsepower and torque over restrictive stock mid-pipe
• Aluminized/409 stainless steel construction resists corrosion and heat

Specifications

• Part Number: 1666
• Material: Aluminized steel / 409 stainless steel
• Pipe Diameter: 2.5" (63.5 mm)
• Shape: X-pipe crossover
• Catalytic Converters: High-flow, street-oriented
• Fitment Position: Mid-section exhaust
• O2 Sensor Bungs: Factory locations
• Finish: Unfinished natural metal

Included Components

• 1x BBK 1666 High Flow X-Pipe Assembly with Catalytic Converters
• 2x Exhaust clamps

Product Description

The BBK 1666 High Flow X-Pipe Assembly with Catalytic Converters is a performance-oriented mid-pipe upgrade engineered specifically for 1996-1998 Ford Mustang GTs equipped with the 4.6L V8. Designed to replace the restrictive factory mid-pipe, this high-flow X-pipe improves exhaust scavenging and reduces backpressure, helping the V8 breathe better and deliver more horsepower and torque to the rear wheels. With mandrel-bent 2.5" tubing and precision-made flanges, the BBK 1666 bolted directly to the stock shorty headers or aftermarket headers with minimal hassle. 

This assembly includes two high-flow catalytic converters that balance performance with street-use capability (note that emissions legality varies by state). Factory-positioned O2 sensor bungs ensure you can reinstall original sensors without modification, and the robust aluminized/409 stainless steel construction offers durability under heat and road conditions. Whether you're upgrading your exhaust for improved power delivery or wanting a fuller V8 tone with added performance, the BBK 1666 X-pipe is a direct-fit solution that enhances your Mustang GT's exhaust system.