Stainless Works 2004-08 F150 5.4L Headers 1-3/4in Primaries 2-1/2in High-Flow Cats

Stainless Works 2004-08 F150 5.4L Headers 1-3/4in Primaries 2-1/2in High-Flow Cats

Marsoni

M251S

$1150.45

Get it in 3 business days with 1 day shipping. Friday, May 29

Stainless Works 2004-08 F150 5.4L Headers 1-3/4in Primaries 2-1/2in High-Flow Cats2004 08 F150 5. 4L 2WD 4WD Triton headers made with 304 stainless steel featuring 1 3 4" diameter primaries with high flow catalytic converters, 2 1 2" diameter lead pipes and clamps. Connects to Stainless Works true dual exhaust systems (08F150TDRT or 08F150TDUB). Fits Supercrew 5. 5' or 6. 5' bed or Supercab 6. 5' bed. This Part Fits: Year Make Model Submodel 2007 2008 Ford F 150 FX2 2004 2008 Ford F 150 FX4 2006 2008 Ford F 150 Harley Davidson

Easy Shipping

Quick Dispatch:

Your Stainless Works 2004-08 F150 5.4L Headers 1-3/4in Primaries 2-1/2in High-Flow Cats orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Stainless Works 2004-08 F150 5.4L Headers 1-3/4in Primaries 2-1/2in High-Flow Cats ships.

Need Help?
Questions about Stainless Works 2004-08 F150 5.4L Headers 1-3/4in Primaries 2-1/2in High-Flow Cats, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Stainless Works 2004-08 F150 5.4L Headers 1-3/4in Primaries 2-1/2in High-Flow Cats in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

Definitely better than the old plugs that probably had 80k miles on them. The one star off is because I had a misfire after installing. Not sure if I damaged the plug or what, but a reinstall didn't fix the misfire. In my genius, I rushed to try to gap it and ended up breaking the iridium tip. Put the old plug into cylinder 3 (where the misfire was) and it was fine. Gonna have to get a new single tomorrow at my local shop, but a bit frustrating to get a misfire after install.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 27, 2026

Verified Purchase

Britincali

Louisville, US

★★★★★ 5

Upgrade from OEM

After seeing a quite ludicrous $403 quote to change 4 spark plugs in a Mazda3 I decided to show my son how easy it is. These were an upgrade from OEM parts. They were gapped perfectly for the car. They took 20mins to fit and work fine.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 11, 2026

Verified Purchase

ANDRES FIGUEROA

Waukegan, US

★★★★★ 5

Very good

The best quality. Runs like new again.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on March 12, 2026

Verified Purchase

Ale

New York, US

★★★★★ 1

garbage spark plugs

misfired after 30 minutes of driving cylinder 4 misfire code, left me stranded on the highway with baby in car. “(9621)” at the end of description is a lie, was not compatible with my vehicle even with compatibility test.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 17, 2026

Verified Purchase

Matt Teed

Lake Worth, US

★★★★★ 5

Actually works on BMW!

I purchased this after the shorter black fluted tool I bought last year failed me. This thing is way better constructed, fits perfect , and actually works to turn it after you can’t turn it by hand any further. Was able to get torqued down to 25nm no problem finally with ease!

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on November 12, 2024