Product Specifications
Flashark Long Tube Headers for 2011-2014 Mustang GT 5.0L
A freer-flowing exhaust path and a stronger V8 tone can make a naturally aspirated Mustang feel more responsive and engaging through the rev range. These Flashark long tube headers are designed for listed 2011–2014 Ford Mustang GT models equipped with the 5.0L 302 Coyote V8.
The stainless steel header set uses 1.75-inch primary tubes and 2.50-inch collectors in a mirror-polished finish. It is intended for performance-oriented exhaust builds where the owner understands that long-tube installation can affect mid-pipe fitment, sound level, oxygen-sensor operation, tuning needs, and emissions compliance.
Specifications
| Product Type | Long Tube Exhaust Headers |
|---|---|
| Fitment Type | Performance / Custom |
| Material | Stainless Steel |
| Surface Finish | Mirror Polish |
| Primary Tube Diameter | 1.75 in |
| Collector Size | 2.50 in |
| Placement | Front / Engine Exhaust Ports |
| Brand | FLASHARK |
| SKU | FLES08233 |
| Product Model | EH28106 (ES08233) |
Key Features
- Long-tube layout intended to reduce restriction compared with the factory exhaust-manifold path
- 1.75-inch primary tubes leading into 2.50-inch collectors
- Stainless steel construction with a mirror-polished surface
- Designed for listed 2011–2014 Mustang GT 5.0L Coyote applications
- Supports a deeper, louder exhaust character when combined with the rest of the exhaust system
- Suitable for performance-oriented builds that account for mid-pipe, oxygen-sensor, tuning, and emissions requirements
Built for Better Flow and a Stronger V8 Tone
Long tube headers give each cylinder a longer exhaust path before the primary tubes merge at the collector. On the naturally aspirated 5.0L Coyote platform, this layout is used to reduce exhaust restriction and support smoother exhaust movement through the upper rpm range.
The final sound depends on the mid-pipe, catalytic converters, resonators, mufflers, pipe diameter, and tune. Compared with the factory manifold arrangement, long tube headers generally make the exhaust louder and more pronounced. Some combinations can also add rasp or cabin drone, especially when paired with an aggressive cat-back or a less-restricted mid-pipe.
Actual horsepower and torque results vary with the complete exhaust configuration, calibration, fuel, engine condition, and installation quality.
Factory Manifolds vs. Long Tube Headers
| Area | Factory Manifold Layout | Flashark Long Tube Layout |
|---|---|---|
| Exhaust Path | Compact factory routing | Longer individual primary tubes |
| Primary Size | Factory specification | 1.75-inch tubes |
| Collector | Factory connection layout | 2.50-inch collector |
| Sound | Quieter factory character | Deeper and more pronounced V8 tone; final result depends on the full exhaust system |
| Installation | Original vehicle configuration | More involved installation with mid-pipe and clearance considerations |
What Is Included
- One complete header set
- Header gaskets
- Installation bolts
Inspect all sealing surfaces and hardware before installation. Correct alignment, an even tightening sequence, and a leak check after the first heat cycles help reduce the risk of exhaust leaks.
Installation Notes
- Professional installation is recommended because access around the 5.0L Coyote engine is limited.
- Compare the 2.50-inch collector connection with the vehicle’s mid-pipe before disassembly.
- An existing aftermarket X-pipe, H-pipe, or cat-back does not automatically establish collector compatibility.
- Check oxygen-sensor routing and wiring clearance throughout the full range of engine movement.
- Keep wiring, hoses, steering components, and heat-sensitive parts away from the header tubes.
- Use an even tightening sequence and inspect for exhaust leaks after the first complete heat cycles.
- A calibration review may be appropriate when the header installation changes oxygen-sensor location, catalytic-converter configuration, or the rest of the intake and exhaust setup.
Who These Headers Are Best For
These headers are best suited to 2011–2014 Mustang GT 5.0L owners building a more performance-focused exhaust system and looking for a stronger exhaust note, reduced restriction, and better pull through the upper rpm range.
They are not the right choice for a 3.7L V6, a vehicle outside the listed years, or an owner who needs a quiet factory-style replacement. They may also be unsuitable for vehicles that must retain an unchanged factory emissions configuration or pass local inspections without additional compliance work.
Emissions and Street-Use Notice
Long tube header installation can affect catalytic-converter placement, oxygen-sensor operation, diagnostic readiness, and emissions compliance. Do not assume this product is legal for public-road use in every state or region.
Review local emissions rules and the planned mid-pipe configuration before ordering. A check-engine light or incomplete emissions monitors can occur with some exhaust and calibration combinations.
Related Mustang Exhaust Parts
Browse additional performance exhaust headers. Owners of a 2011–2017 Mustang equipped with the 3.7L V6 should use the separate Mustang 3.7L V6 header listing instead of this 5.0L GT kit.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
