21-24 Ford F-150 3.5L PowerBoost SPD Performance 35FPB21 Alpha Catted Downpipes

Unlock hidden performance in your 2021–2024 Ford F-150 3.5L PowerBoost with SPD’s Alpha Catted Downpipes. Featuring ultra high-flow 500-cell catalytic converters, 3" mandrel-bent stainless tubing, and direct bolt-on design, this upgrade boosts power, reduces turbo lag, and delivers emission-friendly performance with no check engine light.

Top Features:

  • Ultra high-flow 500-cell SPD Alpha catalytic converters

  • 3" mandrel-bent 304 stainless steel construction

  • CNC laser-cut ½" thick turbo flanges

  • TIG & MIG welded for strength and durability

  • 4" integrated flex pipe absorbs engine and chassis movement

  • Direct bolt-on installation—no tuning required

  • NO CEL (No Check Engine Light) design

  • Made in the USA

Vehicle Fitment:

  • 2021 Ford F-150 3.5L PowerBoost

  • 2022 Ford F-150 3.5L PowerBoost

  • 2023 Ford F-150 3.5L PowerBoost

  • 2024 Ford F-150 3.5L PowerBoost
    Does not fit Raptor or V8 models. Not legal for sale or use in California.

Vendor: SPD Performance
SKU: FDP35FPB21
$ 2,395.00 USD
On-Sale $ 2,395.00 USD
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This product is NOT CARB-APPROVED. We cannot ship this item to CA or any Carb regulated states. To avoid cancellation fee, do not order this if you live in California.
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21‑24 Ford F‑150 3.5L PowerBoost Alpha Catted Downpipes (Part # 35FPB21)

The 2021‑2024 Ford F‑150 3.5L PowerBoost delivers serious hybrid performance, but factory downpipes bottle up power by shrinking the primary catalytic diameter—from 5.5″ down to 5″—which raises back pressure and exhaust gas temperatures. SPD Performance’s Alpha Catted Downpipes replace that bottleneck with a full 3″ mandrel‑bent stainless system featuring industry‑first 500‑cell (or higher) Rhodium‑loaded catalytic converters. This upgrade unlocks improved throttle response, reduced turbo lag and EGTs, better mileage, and horsepower gains without causing a check-engine light—all while still maintaining green emissions standards. Built in the USA with CNC laser‑cut 304 stainless flanges and TIG/MIG welds, the system is race-capable yet suitable for direct factory-style replacement—with no custom tuning required.

Key Features

  • Ultra-high‑flow SPD Alpha catalytic converters (500‑cell, rhodium‑enhanced) for emissions compliance and maximum exhaust flow

  • Full 3″ mandrel‑bent 304 stainless steel tubing for strength and durable performance

  • CNC laser‑cut ½″ 304 stainless turbo flanges plus TIG & MIG welding for leak‑free, long‑lasting seal

  • Integrated 4″ flex‑pipe to absorb engine movement and chassis flex

  • Direct bolt‑on to factory downpipe location—no tuning required, no check engine lights (NO CEL)

  • Proudly manufactured in the USA for race-ready quality

Benefits

  • Enhanced engine performance with sharper throttle response and quicker turbo spool

  • Lower exhaust gas temperatures and minimized turbo lag

  • Improved fuel efficiency and smoother acceleration

  • No check engine light triggers even under spirited or tuned use

  • Backed by a manufacturer’s warranty for installation quality and material defects

Product Specs

  • Size: Built for 2021‑24 Ford F‑150 3.5L PowerBoost turbo hybrid engines

  • Material: 304 stainless steel tubing and flanges

  • Color/Finish: Natural stainless, brushed/satin metallic

  • Catalytic Core: SPD Alpha ultra‑high flow, 500‑cell (or greater), rhodium‑loaded

  • Flex Section: 4″ stainless flex pipe incorporated

  • Flanges: ½″ thick CNC laser‑cut V‑band flanges (304ss)

  • Welding: TIG and MIG welded for strength and durability

  • Origin: Made in the USA

Install Difficulty Level

Installation takes approximately 1 hour and is rated as light to moderate mechanical skill. The downpipes feature direct-fit factory alignment and bolt-on design—no cutting, welding, or tuning required—making it an easy upgrade even for DIY enthusiasts.

Vehicle Fitment

Compatible with the following vehicles: 2021, 2022, 2023, 2024 Ford F‑150 equipped with the 3.5L PowerBoost hybrid V6 engine (PowerBoost/EcoBoost 3.5L). Does not fit Raptor models or V8 engines.

CARB Status

This part does not carry a CARB (California Air Resources Board) Executive Order (EO) number. As such, it is not legal for sale or use in the state of California or any other state adopting California emission standards. Please ensure compliance with local regulations before purchasing.

For any questions about fitment, emissions compliance, or to report product description inaccuracies, contact MPT Performance experts at (407) 636‑7077 or by email.

Shipping Policy

MPT is proud to offer free shipping on most orders over $149.

  • Free shipping applies only to the contiguous United States. Shipping and handling charges will apply to orders outside the contiguous US, and the buyer is responsible for any duty fees or taxes their home country may charge to import goods.
  • With free shipping, we will choose the best shipping method for your order. We use all major carriers, including USPS, FedEx, UPS, and DHL.

Turnaround Times:

  • MPT Tunes have a standard turnaround time of 2-3 business days, beginning once we receive your MPT Tune Form.
  • We do not process orders on weekends or observed holidays, which do not count as business days.
  • Physical items that are in stock at MPT and ordered by 4PM EST will be shipped the same day. Orders placed after 4PM EST will be processed on the following business day.

Special Considerations:

  • Items not stocked at our location will follow the same processing times but may experience lead-time delays and could incur additional charges. Shipping methods may vary for these items based on what was paid and the requested delivery speed. If you need an item by a specific deadline, please contact an MPT Expert.
  • SCT Tuner Orders with the Prioritized Order option must have their tune forms submitted by 3PM EST to be completed the same day. Forms submitted after this time will be processed the next business day.
  • Orders will ship to the billing address listed on your order. If paying by credit or debit card, we can only ship to the billing address. Contact an MPT Expert for assistance if you need a different shipping address.

MPT Performance Returns and Refund Policy

A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.

MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.

Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.

For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.

The customer is responsible for all shipping charges incurred during the return process.

Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.

HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.

Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.

nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.

MPT Decals are Non-Refundable, once they have been received by the customer.

Year Make Model Submodel
2021-2024 Ford F-150 3.5L

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