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Flowmaster 21-25 F-150 FlowFX Direct Fit Muffler - 718172
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Flowmaster
SKU:
FLO718172
|
- UPC:
- 090127846544
- Availability:
- Regularly stocked product
$425.95
$479.95
(You save
$54.00
)
Other Flowmaster kits for this car
Fits these vehicles
- 2021-2026 Ford F-150King Ranch, Lariat
- 2021-2023 Ford F-150Limited
- 2021-2026 Ford F-150Platinum
- 2022-2026 Ford F-150Police Responder
- 2021-2026 Ford F-150SSV
- 2024-2026 Ford F-150STX
- 2021-2026 Ford F-150Tremor, XL, XLT
Part details
- Part number
- FLO718172
- Manufacturer part number
- 718172
- UPC
- 090127846544
- Brand
- Flowmaster
- Part type
- Muffler
- Prop 65
- ⚠️ WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov
- Instructions
- Installation instructions (PDF)
- Material
- 409 stainless steel
Installation guide (from Flowmaster)
Hosted by Flowmaster. Follow the maker's instructions and torque specs.
- Box size:
- 16.20 × 12.10 × 58.60 (in)
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This Flowmaster® Flow FX Direct-Fit Muffler system for the 2021-2026 Ford F-150 trucks with the 2.7, 3.5 or 5.0-liter engines is manufactured using durable 409 stainless steel throughout and features 3.00-inch mandrel bent pipes for optimum exhaust gas flow. A Flowmaster Flow FX Series muffler is used for an aggressive to moderate sound level and maximum performance. Performance increases on the dyno revealed an increase of 18 hp and 14 ft/lbs. at the rear wheels. This system connects directly to the factory dual tail pipes and uses all the existing factory hangers. Includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's One (1) Year Limited Warranty.
Fits 2021-2026 Ford F-150 with 2.7, 3.5 and 5.0-liter non-PowerBoost engines with factory dual tailpipes
Flowmaster Flow FX Direct Fit Muffler
- Connects directly to the factory dual tailpipes for a simple installation
- Large 3.00-inch Mandrel bent pipes for superior flow and power
- Flowmaster Flow FX series muffler offers increased performance
- Flow FX straight through design offers a deep powerful sound
- Max power gains of 18 hp and14 lb-ft at the rear wheels
- 409 stainless steel constuction for extra durability
- One (1) Year Limited Warranty
- Clearance Item:
- N
- LTL:
- N
- MPN:
- 718172
- Proposition 65:
- Y
- Special Order:
- N
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Flowmaster
Flowmaster 21-25 F-150 FlowFX Direct Fit Muffler - 718172
Flowmaster 21-25 F-150 FlowFX Direct Fit Muffler - 718172 FAQ
It is listed for: 2021-2026 Ford F-150; 2021-2023 Ford F-150; 2021-2026 Ford F-150 and more (see the full list above). Pick your vehicle on this page to check your exact year and trim.
The maker's installation guide is on this page — see Installation guide under the part details for the step-by-step and the torque figures. Work on level ground with the car properly supported, and torque every fastener to the maker's figure. If the job is beyond your tools, any shop that does this kind of work can fit it.
The sound depends on the muffler and resonator design. A cat-back with a resonator stays closer to stock; an axle-back changes the tone more than the volume. Look for the maker's sound notes or a clip on this page.
Cat-back and axle-back systems bolt to the factory connection points. Headers and downpipes replace the factory pipe at the engine and may need new gaskets and hardware; see What's in the box.
A cat-back or axle-back needs no tune. Headers and downpipes change what the oxygen sensors see, so many cars need a tune or a sensor spacer to avoid a warning light.
Drone depends on the muffler and resonator design and your car's gearing. Systems with a resonator or an X-pipe drone less, and the maker notes when a system is built to be quiet at cruise.
An axle-back or cat-back is a jack-stands job with the right sockets and penetrating oil for rusty bolts. Headers and downpipes take more room and time, and a lift helps.
Most systems include the clamps and gaskets they need; see What's in the box. Reuse a factory gasket only if it is undamaged.
Yes — monthly options show right under the Add to Cart button. Affirm, Klarna, PayPal Pay Later and Snap Finance are offered at checkout, and checking what you qualify for does not affect your credit score.
Install and care: mufflers
Before you start
- Soak the factory flange bolts and hangers in penetrating oil the day before.
- Lay out the sections and clamps against What's in the box before anything goes under the car.
Do
- Hang the whole system loosely first, line it up, then tighten the clamps from the front back.
- Check for leaks at every joint with the engine running before the final tightening.
Don't
- Don't tighten any clamp fully until the whole system hangs straight.
- Don't reuse a crushed or torn factory gasket.