Stainless Works 15-24 Mustang GT Headers 1-7/8in Primaries 3in Catted Factory Connection

This header system is built for the 2015-2026 Ford Mustang GT and its 5-liter engine. It replaces the factory exhaust manifolds with 1-7/8in primary tubes that step down into 3in catted pipes, reconnecting at your factory connection point downstream.

Why Upgrade to This Header System

• 1-7/8in primary tubes carry each cylinder's exhaust into the collector, sized for the Mustang GT's 5-liter engine.
• 3in catted piping keeps the catalytic converters in the system instead of deleting them.
• The factory connection point ties into the rest of your stock exhaust setup past the headers.
• Per Stainless Works, the system is engineered to add [VERIFY: hp gain, need manufacturer dyno sheet] to the 5-liter engine's output.

Fitment Notes

Fits 2015-2026 Ford Mustang GT models. Does not fit Dark Horse, EcoBoost, GTD, Mach 1, GT500, Bullitt, GT350, or V6 Mustangs.

More Headers parts that fit your Mustang

Install and Honest Talk

This header system steps up to 1-7/8in primary tubes and 3in catted pipes that meet your exhaust at the factory connection point downstream. Because it reconnects there, fit depends on that part of your exhaust still being in factory form: if you have already swapped in an aftermarket mid-pipe or cat-back, check that the connection still lines up before you order. This product is emissions-sensitive. Check your local emissions laws before you buy. Swapping the factory manifolds for a header system also changes how the car sounds, and that change carries into the cabin on the highway, not just outside it. [VERIFY: exact noise level, drivability impact, effect on the factory powertrain warranty, and cost of ownership.] What else you need: [VERIFY: install steps, hardware in the box, and tune requirement.]

Specs

• Brand: Stainless Works
• Part number: [VERIFY: part number]
• Quantity: [VERIFY: quantity]
• Part type: Headers & Manifolds
• Primary tube diameter: 1-7/8in
• Catted pipe diameter: 3in
• Downstream connection: Factory connection
• Emissions status: No CARB EO number on file. Check your local emissions laws before you buy.

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Free US shipping over $99

Orders over $99 ship free by ground to the lower 48 states. Alaska, Hawaii and Canada are not included; shipping to those addresses is calculated at checkout. Some oversize or heavy parts (long-tube exhausts, bumpers, full lift kits) go freight instead of parcel: free to a commercial address with a loading dock, and residential freight delivery carries an additional charge.

When it ships

Parts ship direct from the distributor warehouse that stocks them, so dispatch timing depends on the part, not on a single cutoff. You get a confirmation with tracking as soon as it leaves, and tracking shows the delivery estimate for your address. If a part is backordered we email you an expected availability date.

Missing or damaged items

Report a short shipment or shipping damage within 5 business days of delivery. For a packing error, send us the date or package code printed on the label along with the part number so we can trace it with the warehouse.

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, you can contact us at help@anythingcoyote.com or fill our our contact form. If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted. 

You can always contact us for any return question at help@anythingcoyote.com.

Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items
Certain types of items cannot be returned, like perishable goods (such as food, flowers, or plants), custom products (such as special orders or personalized items), and personal care goods (such as beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.

Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.

Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.