MagnaFlow Custom Builder Pipe 4" turbo-back exhaust for the 1999-2003 Ford F-250/F-350 Super Duty 7.3L Power Stroke diesel. Built from corrosion-resistant stainless steel with mandrel-bent pipes and produced on CNC robotic equipment, it exits single passenger-side rear and is tuned for an aggressive interior and very aggressive exterior tone. Emissions-legal; professional install recommended (cutting/welding may be required). Backed by MagnaFlow's limited lifetime warranty.
Specifications
| Type | 4" turbo-back exhaust (Custom Builder Pipe) |
| Engine | Ford 7.3L Power Stroke diesel |
| Material | Stainless steel, mandrel-bent |
| Exit | Single passenger-side rear |
| Sound | Aggressive interior / very aggressive exterior |
| Part Number | 17878 |
| Warranty | Limited lifetime |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2003 | Ford | F-250 Super Duty | Lariat |
| 1999-2003 | Ford | F-250 Super Duty | XL |
| 1999-2003 | Ford | F-250 Super Duty | XLT |
| 2003 | Ford | F-350 Super Duty | King Ranch |
| 1999-2003 | Ford | F-350 Super Duty | Lariat |
| 1999-2003 | Ford | F-350 Super Duty | XL |
| 1999-2003 | Ford | F-350 Super Duty | XLT |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
