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Flowmaster Turbo Downpipe Kit 1078

Flowmaster Turbo Downpipe Kit 1078
Flowmaster Turbo Downpipe Kit 1078
$292.99 ea
NEWARRIVING SOONEstimated Ship Date 11/25/2025 (If Ordered Today)10 Available from HOLLEY PERFORMANCE PRODUCTS as of 11/07/2025
Model: 4004852
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
OVERSIZE 1
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[More Info]
This is our 4.00-inch replacement Turbo Downpipe to eliminate the often crimped and restrictive factory 3.50-inch turbo downpipe on all 1999-2003 Ford F-Series trucks with 7.3L Powerstroke engine. Constructed from large 4.00-inch mandrel-bent 16 gauge aluminized steel tubing for unrestricted flow, our downpipe is a must for anyone wanting to make more power with their 7.3L Powerstroke engine. This direct-fit downpipe bolts onto the turbocharger flange using the V-Band connection. Benefits include improved power and torque as well as throttle response and overall fuel mileage.
Features:
  • Unrestricted Flow Compared to Factory Downpipe
  • Large Smooth 4.00-inch Diameter Tubing
  • 16 Gauge Aluminized Steel Construction
  • Increases Overall Power Capability
  • Reduces Heat Build-up
  • Easy Installation
Fits 1999-2003 Ford with 7.3L PowerStroke Diesel Turbo engine.
Installation Notes:
Fits 1999-2003 Ford with 7.3L PowerStroke Diesel Turbo engine.
About Flowmaster

Manufacturer of performance exhaust systems, mufflers, performance air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Downloads:

Download Name File Size
1078.pdf38.57KB

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine
Ford F-250 Super Duty Lariat 1999 7.3L / 445 / V8
Ford F-250 Super Duty Lariat 2000 7.3L / 445 / V8
Ford F-250 Super Duty Lariat 2001 7.3L / 445 / V8
Ford F-250 Super Duty Lariat 2002 7.3L / 445 / V8
Ford F-250 Super Duty Lariat 2003 7.3L / 445 / V8
Ford F-250 Super Duty XLT 1999 7.3L / 445 / V8
Ford F-250 Super Duty XLT 2000 7.3L / 445 / V8
Ford F-250 Super Duty XLT 2001 7.3L / 445 / V8
Ford F-250 Super Duty XLT 2002 7.3L / 445 / V8
Ford F-250 Super Duty XLT 2003 7.3L / 445 / V8
Ford F-250 Super Duty XL 1999 7.3L / 445 / V8
Ford F-250 Super Duty XL 2000 7.3L / 445 / V8
Ford F-250 Super Duty XL 2001 7.3L / 445 / V8
Ford F-250 Super Duty XL 2002 7.3L / 445 / V8
Ford F-250 Super Duty XL 2003 7.3L / 445 / V8
Ford F-350 Super Duty Lariat 1999 7.3L / 445 / V8
Ford F-350 Super Duty Lariat 2000 7.3L / 445 / V8
Ford F-350 Super Duty Lariat 2001 7.3L / 445 / V8
Ford F-350 Super Duty Lariat 2002 7.3L / 445 / V8
Ford F-350 Super Duty Lariat 2003 7.3L / 445 / V8
Ford F-350 Super Duty XLT 1999 7.3L / 445 / V8
Ford F-350 Super Duty XLT 2000 7.3L / 445 / V8
Ford F-350 Super Duty XLT 2001 7.3L / 445 / V8
Ford F-350 Super Duty XLT 2002 7.3L / 445 / V8
Ford F-350 Super Duty XLT 2003 7.3L / 445 / V8
Ford F-350 Super Duty XL 1999 7.3L / 445 / V8
Ford F-350 Super Duty XL 2000 7.3L / 445 / V8
Ford F-350 Super Duty XL 2001 7.3L / 445 / V8
Ford F-350 Super Duty XL 2002 7.3L / 445 / V8
Ford F-350 Super Duty XL 2003 7.3L / 445 / V8

Specifications:

Automotive Item Grade Premium Replacement
California Proposition 65 Required No
Color Gray
Emission Code 5
Material Aluminized Steel
Material Gauge 16
Part Type Turbocharger Down Pipe
Product Type Exhaust Accessories
System Type Turbo Down Pipe
Tubing Diameter (in) 4
Warranty Time 36 Months

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