2015-2020 Ford F150 3.5L EcoBoost & 5.0L V8 Diamond Eye 4 inch Single-Exit Cat-Back Kit (Stainless) | K3338S

Name: 2015-2020 F150 3.5L EcoBoost & 5.0L Diamond Eye Stainless 4 inch Single-Exit Stainless Steel Cat-Back Exhaust System
Brand: Clearance
SKU: K3338S
Price: 466.99 USD
Availability: InStock

2015-2020 F150 3.5L EcoBoost & 5.0L Diamond Eye Stainless 4 inch Single-Exit Stainless Steel Cat-Back Exhaust System

SKU K3338S

10 Review(s)

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Highlights:

Adds an aggressive sound and reduces backpressure
Deep, throaty exhaust tone with more volume
Deletes resonator for increased sound
4" diameter tubing
409 stainless steel construction
Fits all wheelbase sizes

Great Sound and Extra Performance for your F150

Diamond Eye has been in the truck exhaust game a long time, and they've used their knowledge to come up with an awesome 4" cat-back exhaust system that can give your 2015 to 2020 F150 a nice boost in power, fuel economy, and a great sound. Diamond Eye's 4" Cat-Back Kit features a stock-style single-exit design that keeps your truck looking clean and mean while it produces a big, aggressive rumble that will instantly catch everyone's attention. Diamond Eye's large tubing, unique muffler, and more efficient manufacturing enables this system to bring new life into the 3.5L EcoBoost V6 or 5.0L V8 of the 2015-2020 F150s.

4" Diameter Mandrel-Bent Exhaust Tubing

This aggressive Diamond Eye Cat-Back Exhaust Kit bolts on right in place of your truck's factory exhaust system in an easy installation that can take less than an hour. The Diamond Eye kit features 4" diameter tubing that's all mandrel-bent to help improve exhaust outflow and reduce restrictions. The kit is made out of 409 stainless steel and comes standard with a high-performance muffler that produces a deep, throaty, and aggressively loud tone to give your truck a great sound to go along with all that power. The kit comes with both hardware and detailed instructions for installation.

Fitment: 2015-2020 F150 3.5L EcoBoost & 5.0L V8 - All Cab and Bed Configurations.

This cat-back exhaust kit deletes your factory resonator for a more aggressive tone.

2019-2020 Limited Fitment: this cat-back kit will not fit 2020 F150 Limited models due to their different exhaust configuration. 2019, 2020 Limiteds with require a 2017, 2018, 2019, 2020 Raptor cat-back system.

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2017 F150 3.5L EcoBEAST

This is the easiest exhaust I've ever installed. Took me about 20 mins to install LOOK: the large 4 inch pipe with bigger tip LOOK sick on my F150. Makes people double take my truck all the time SOUND: This system is very aggressive, but not too much. I installed on my twin turbo ecoboost V6, so you can expect a v6 to sound like a V6, but I must add, after my cold air intake,extreme custom tune for performance 93 octane, it made this truck sound very unique. It sounds like something in between v6 And deep v8 rumble. I'm very happy with my purchase. Truck dyno @ wheels 438 HP and 490 lbs of torque. It will haul ass, and sound awesome doing it too

2015-2020 F150 3.5L EcoBoost & 5.0L Diamond Eye Stainless 4 inch Single-Exit Stainless Steel Cat-Back Exhaust System Review Image!

Did you find this helpful? 12 of 12 Found Helpful

Reviewed by: Kris S from Jacksonville on 12/13/2018

2017 ford f150

No idea why you'd drop 1000 plus dollars on an exhaust when this is an option. Unless you absolutely need duals than this is the perfect exhaust. Sounds very deep and no rasp too it like some of the corsa/borla systems for 4 times the price. The fitment is fine, not great, but fine. Some cutting does need to happen depending on bed/cab size. Stainless system comes with a 6 year warranty so you'd be an a-hole to buy the aluminized version. Would absolutely 100% reccomend this to anyone searching for an exhaust.

Did you find this helpful? 5 of 5 Found Helpful

Reviewed by: Justin from Pennsylvania on 12/17/2019

16 F-150 5.0

Fit nice sounds awesome gave the truck that deep rumble I was looking for

Did you find this helpful? 2 of 2 Found Helpful

Reviewed by: Derick Bean from Columbia City on 12/31/2019

2019 f150 3.5 EcoBoost

Super affordable and sounds absolutely amazing! Some people love it some people hate it but everyone says it definitely sounds different and unique. To me it’s about performance if you want to get the maximum performance out of your turbos this is where it’s at!!

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Richard from Georgia on 3/21/2020

2015 f150

I bought this exhaust with the hopes of making my truck sound better or make a sound at all. Lol. I had to have a shop put it on because I couldn’t get my OEM exhaust out from under the truck. They had no problem and said it went fine. I got the black tip to and it looks great. I went from the 2.5” to this 4” and the shop thought I was crazy. Well let me say it sounds great. It doesn’t sound like a v8 but it makes great sound when you get on it. There is no cabin drone, you can hear it inside if you stomp on it, otherwise with the radio and ac going you don’t hear it. I’m happy and I believe it is sounding better as it breaks in.

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: George from SACRAMENTO CA on 8/11/2020

2018 f150

Installed very easily, fit and finish in good, a little drone when towing but the juice is worth the squeeze

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: Lucas Mastin from Queen creek az on 2/7/2021

2019 F150 V8

Awesome sound and fairly easy install. For the $$ you can't beat it and the black tip looks awesome. Do yourself a favor (I did) and buy 3 lap joint clamps, makes install much easier and solid. I would FOR SURE buy again. thanks Stage 3

Did you find this helpful? 1 of 1 Found Helpful

Reviewed by: David Wellman from WV on 3/1/2021

2017 F-150 3.5L EcoBoost

Easy to install. I have a crew cab 6.5' bed and still had to trim 5" off the intermediate pipe. Sound is what I expected, still a V6 drone just deeper and no increase in turbo sound while driving. Maybe 3" downpipes and turbo adapters would change that. Performance wise there was no change, maybe slight decrease actually. Will not go into overdrive if going under 45mph, sign of not enough exhaust back pressure. Only other mod I have is a cold air intake. In my opinion you should get a tune if you want to use aftermarket parts with these trucks.

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Reviewed by: Maxwell Tucker from Michigan on 6/11/2021

2018 F150 5.0L

This exhaust had me iffy at first with its sound output but it grew on me over time. Definitely a change from stock. It’s a deeper throaty sound with expected cab drone. The issue at first glance with this exhaust is it comes with a flow thru style muffler and did not indicate inlet or outlet and me never working in an auto shop or parts store did not know you can install these either way (one way is louder, one way catches more sound therefore quieter) Coming from the perspective of a weekend warrior I installed this on a Sunday and guess who wasn’t available to help, customer service (which is completely understandable) I feel that Diamond Eye needs to include that information in the paperwork so you know that up front and can decide which side you want the inlet to be. All in all tho it’s not bad for what it is. I have a crew cab 6.5’ bed and still had to cut off about 10 inches or so so expect that.

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Reviewed by: Justin from West Virginia on 9/21/2023

2019 F-150 3.5 Ecoboost

I'm still questioning if I should have spent the extra $150 and presumably gotten better qaulity. The issue is fitment and general pride in the product with the directions being pretty much useless. It took hours more than it should of to get this thing on because the rear most joint wasn't expanded enough to slip over the other section. The thing leaked like a sieve requiring me to adjust clamps and finally get some exhaust joint sealer. Still not a great seal everywhere. If you want loud and you want cheap then this is it. If you're going to weld it up then even better. You might also get a perfect product, who knows. If you want an enjoyable install and something that you're not wondering if it's sprung a new leak then spend an extra $150.

Did you find this helpful? 0 of 1 Found Helpful

Reviewed by: Paul from Utah on 11/26/2020

Will this fit the 2.7 Ecoboost? From my experience the 2.7 has the same cat back system as the 3.5 and 5.0.

Asked by: f150 guy - 10/12/2020

The kit will bolt up just fine to a 2.7L EcoBoost truck. We just can't guarantee what kind of sound you'll get.

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Answer provided by: Jason@Stage3 (10/13/2020)

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Does this fit a regular ccab short bed f150 2019

Asked by: Jose Barrera - 3/9/2020

According to Diamond Eye, this kit will fit Regular Cab/Standard Cab trucks with a 6.5ft bed and 126" wheelbase. However, you will have to trim its inlet pipe for a proper fit.

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Answer provided by: Jason@Stage3 (3/12/2020)

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Diamond Eye is showing the 2015 F150 3.5 ecoboost uses model K3330, but your showing the 2015 uses K3338. Which one is correct and if both fit, what’s the difference?

Asked by: Caleb - 12/29/2018

K3338 is the correct part number for the 2015 F150s. K3330 is meant for the 2011-2014 F150s, though can fit with hangar modifications. K3338 does not require hangar modifications.

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Answer provided by: Jason@Stage3 (1/3/2019)

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WARNING: Cancer and Reproductive Harm

This product can expose you to chemicals including those known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information, visit [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov).

2015-2020 Ford F150 3.5L EcoBoost & 5.0L V8 Diamond Eye 4 inch Single-Exit Cat-Back Kit (Stainless) | K3338S

Great Sound and Extra Performance for your F150

4" Diameter Mandrel-Bent Exhaust Tubing

Will this fit the 2.7 Ecoboost? From my experience the 2.7 has the same cat back system as the 3.5 and 5.0.

Does this fit a regular ccab short bed f150 2019

Diamond Eye is showing the 2015 F150 3.5 ecoboost uses model K3330, but your showing the 2015 uses K3338. Which one is correct and if both fit, what’s the difference?

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