SPELAB Exhaust Header for 2011-2015 Ford Mustang Exhaust Header 3.7 V6 D2C

Compact Stainless Headers for Mustang 3.7L V6 Exhaust Projects

The SPELAB polished stainless steel header pair is offered for 2011–2015 Ford Mustang 3.7L V6 exhaust projects, with 2015 chassis and connection compatibility requiring separate confirmation. Each compact bank routes three runners into a flanged collector. The pair suits a configuration-matched manifold replacement or exhaust refresh with required catalysts and sensors retained.

Best For

• 2011–2014 Mustang 3.7L V6 owners replacing diagnosed damaged manifolds after checking the collector joints.
• Exhaust refreshes retaining a compatible downstream route and required vehicle equipment.
• 2015 Mustang 3.7L owners who can verify this pair’s specific chassis route before ordering.

Three Runners per Bank and Matched Collector Seats

The SPELAB Mustang V6 pair gives each cylinder a tubular runner before the collector. Any change in sound or output depends on the complete engine and exhaust configuration.

No product-specific dyno result establishes a fixed power gain or elimination of all backpressure. Correctly aligned collector seats and sound head fasteners are essential to sealing; a header cannot correct incompatible downstream pipes.

Specs

What’s Included

Check the Installation section for vehicle-side seals, fasteners and connections that may need to be retained or renewed.

Vehicle & Engine Fitment

The 2015 Mustang uses a redesigned chassis and must not be treated as an unchanged 2011–2014 exhaust installation. Confirm this header pair’s actual clearance, collector positions and connecting pipes for 2015 before purchase. The 3.7L application does not include a 4.0L V6, EcoBoost four-cylinder, V8 or later model year by inference.

Intended use: establish applicable noise and emissions requirements before purchase. Retain all required catalysts, sensors and auxiliary equipment. Product naming alone does not establish road-use certification or inspection compliance.

Before You Order & Install

• Configuration: confirm the actual 3.7L engine, model year, transmission and chassis, especially for the advertised 2015 application.
• Collector joints: match both two-hole flange patterns, rounded seats, seals and downstream pipe alignment.
• Hardware: verify the four connection stud-and-nut sets and obtain the correct head fasteners and any additional seals or supports.
• Clearance and equipment: check steering, starter, wiring, sensor reach and required catalyst connections before final tightening. Diagnose ticking or running faults rather than assuming every noise is a header leak.

Will the ECU Need Tuning?

Have a qualified technician assess the actual engine, sensor arrangement and complete exhaust. Product-specific calibration data does not support a universal claim that tuning is required or unnecessary. Diagnose leaks, sensor faults and warning lights first. Calibration cannot correct incompatible joints, poor clearance or missing required emissions equipment.

Installation Overview

This is a general installation overview. Follow the service procedure for the actual vehicle and complete the configuration and connection checks above. Professional installation is recommended.

1. Confirm the configuration and parts. Confirm the Mustang year, 3.7L engine, chassis and transmission. Verify the 2015 route separately and match all collector joints and required equipment.
2. Cool and support the vehicle. Allow the engine and exhaust to cool completely. Use the correct lifting procedure with a suitable lift or rated stands on a firm level surface; never work beneath a vehicle supported only by a jack.
3. Record connections and remove the original assembly. Record the sensors, shields and supports. Support downstream pipes and remove the original components using the actual vehicle service procedure.
4. Prepare the joints. Inspect threads, mating surfaces, supports and retained pipes. Address damaged fasteners and clean sealing faces carefully. Match the appropriate seal and hardware to every joint.
5. Trial-fit the complete route. Loosely position both V6 header banks and matched collector joints. Check steering, starter, wiring and body clearance without drawing misaligned pipes together with fasteners.
6. Secure and restore connections. Secure matched gaskets and fasteners to the applicable specifications. Restore required sensors, catalysts, supports and protection without wiring or pipe strain.
7. Check sealing and operation. Run the engine in a well-ventilated area and inspect for leaks, contact, abnormal sound and warning lights. Investigate faults before use and recheck the cooled assembly as required by the applicable service procedure.

Frequently Asked Questions

Is the 2015 Mustang application the same as 2011–2014?

The SPELAB header pair’s advertised range includes 2015, but the redesigned 2015 Mustang requires separate confirmation of chassis clearance, collector positions and downstream connections. Shared 3.7L displacement does not prove identical installation.

Does this header pair fit every Mustang engine?

The SPELAB pair is intended for a configuration-matched 3.7L V6 application. Compatibility with a 4.0L V6, EcoBoost four-cylinder or V8 Mustang is not established.

Are the four supplied studs a complete head mounting kit?

The four pictured stud-and-nut sets in the SPELAB Mustang V6 package do not constitute a complete cylinder-head fastener kit. Confirm their connection assignments and obtain all additional vehicle-specific fasteners before installation.

Can these headers cure a ticking noise?

The SPELAB Mustang headers cannot cure every ticking noise. Diagnose the source and inspect head seals, fasteners and collector joints before selecting replacement parts.

Do these headers guarantee more power without tuning?

This SPELAB Mustang V6 pair has no product-specific evidence supporting a fixed power gain or universal no-tune claim. Verify mechanical fit, sealing and sensor operation and have the complete configuration assessed.

Warranty & Customer Support

A one-year limited warranty from delivery covers qualifying material and workmanship defects under normal use for the original purchaser. Proof of purchase is required. Improper installation, alteration and modification are excluded, as are installation and removal labor costs.

Returns within 30 days are subject to product condition and the applicable shipping terms. Read the Warranty & Return Policy for eligibility and claim procedures.

For fitment questions or an order issue, email service@spelabautoparts.com or call +1 888 301 8666. Hours: Monday–Friday, 9:00 AM–6:00 PM EDT. Share your vehicle year, model, engine, chosen style and relevant photos; include the order number for an existing purchase.