Size Chart
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This BBK exhaust system component is designed for the exact vehicle or component configuration identified on this page. Review the verified fitment or universal interface, specifications, included parts, and installation requirements before ordering.
Key Features
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 1986-1993 | Ford | Mustang | GT |
| 1986-1993 | Ford | Mustang | LX |
| 1986 | Ford | Mustang | SVO |
| 1993 | Ford | Mustang | SVT Cobra |
| 1993 | Ford | Mustang | SVT Cobra R |
Specifications
| Manufacturer | BBK |
|---|---|
| Manufacturer Part Number | 1521 |
| Product Type | Downpipe Back |
| Power or Flow Rating | 20HP |
| Finish | Stainless Steel |
| Thread or Fitting | 1986-1993, 2-1, 12-20 |
| Engine or Platform Requirement | 5.0L |
| Fitment Type | Vehicle specific, verify the complete application |
What's Included
One new BBK product identified by manufacturer part number 1521. Gaskets, fasteners, wiring, sensors, fittings, clamps, filters, fluids, tuning, and companion components are included only when expressly stated for this exact part number.
About BBK
BBK develops intake, throttle-body, exhaust, fuel, oil-separation, and chassis products for domestic performance vehicles. Product selection remains exact-application and exact-part-number specific.
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Frequently Asked Questions
Will this BBK exhaust system component fit my 1986-1993 Ford Mustang GT?
That application is listed, but confirm the engine in Specifications, transmission, drivetrain, body style, emissions equipment, production split, and every BBK note before ordering.
Does this connect to factory exhaust or BBK headers?
Use the exact application notes. Pipe diameter, flange style, catalyst placement, and companion header or exhaust part numbers must match.
Will exhaust sound and clearance change?
Both can change. Sound varies with the complete system, while clearance depends on chassis, transmission, suspension, and ride height.
Installation Instructions
Follow the current BBK instructions and vehicle service information for this exact part number. Confirm the application, interfaces, tools, hardware, fluids, torque values, wiring, clearances, emissions equipment, calibration, leak checks, and startup procedure before returning the vehicle to service. Professional installation is recommended for fuel, exhaust, suspension, drivetrain, or electronic throttle work.
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