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HKS Stainless Steel Equal Length Exhaust Manifold ( Part Number:HKS3 14019-AF002)

HKS Stainless Steel Equal Length Exhaust Manifold - Subaru STI 2008+

MODEL # HKS3 14019-AF002
Manufacturer Part # 14019-AF002


MSRP: $665.00

In stock! Ships same day
Qualifies for free shipping!

Buy as a package deal and save:
 RallySport Direct 2015 Subaru STI Project Car POWER Kit ( Part Number:RSD 15STIPCP)
RallySport Direct 2015 Subaru STI Project Car POWER Kit
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HKS has been one of the leading pioneers in Japanese Muscle. And this has been achieved with their extensive research and development in their design, and building methods. This is their stainless steel equal length exhaust manifold has been crafted from SUH409 stainless steel, and has been designed to optimize exhaust flow while increasing spool. 

With this exhaust manifold, you can expect a more aggressive exhaust note, with improvements to both horsepower and torque. Additionally, this exhaust manifold will accept the stock uppipe, as well as a number of aftermarket uppipes that still utilize the 2-bolt flange. 

Included with the HKS Stainless Steel Equal length Header is a pair of new manifold gaskets, a new uppipe gasket, some heat wrap with a pair of worm clamps.

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Brand: HKS
Includes Catalytic Converter: No
Installation Hardware Included: Yes
Manifold Design: Equal Length
Piping Coating: No
Piping Flex Joint: No
Piping Material: 409 Stainless Steel
Piping ID: 42mm

Mfgr. Warranty: 4 Years
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.



Verified Purchase

2017 STi
Kahuna 4 months ago
My car was at stage 2 with an Invidia catted downpipe and Q300 exhaust when I installed this. According to my butt dyno, this felt like it improved the overall power of the car...especially over 3,500 rpms. Not as much of a gain as going to stage 1 or stage 2, but noticeable. I love the extra power, but I'm much happier about the header reducing the drone while driving on the was pretty bad with the stock exhaust manifold and turbo back exhaust. The engine also runs a LOT smoother through the entire rpm range. I would buy it again. Installation was straightforward. Recommend getting an O2 sensor socket if you don't already have one.

This fits 2008WRX -2014 wrx
WRXringland 8 months ago
The very same part for the WRX model is over $400 more on this same website. Don't buy it it's the exact same part as this but this one for the STI is a ton cheaper, fits like butter sounds amazing and huge gains across the board. Don't waste $400 and get the other set for the WRX. This will fit your WRX even though it says STI only

Verified Purchase

Cgm_sti 11 months ago
Put these on my 2005 sti. Personally i like the equal length sound, but at times miss the rumble! Packaging was good and shipping was fast. Coming on a year having these on and no cracks/rust or anything. Gained some power out of these too! Only thing i didnt like was the heatshield attaching to the headers with worm clamps.. kind of janky if you tell me.
Verified Purchase

HKS Stainless Steel Equal Length Exhaust Manifold
4getu 11 months ago
I was happy with my purchase of this header and the shipping of the product arrived sooner than expected. The packaging was spot on and the product itself was impeccable and came with all the necessary hardware. The install took about an hour and a half which the most time consuming part was taking off the heat shield of the factory header to remove the oem part. Once the oem header is off the HKS header fit perfectly with no issues what so ever. I am glad they included a sheet of heat wrap for the oil pan area to help eliminate heat build up around the oil pan and also happy that the factory under carriage cover was able to go back on.
Verified Purchase

Legitamate Review
stiboris 6 years ago
RSD Guys, You can delete the review I have underneath, but this link provides a much more detailed review full of soundclips, out of the box, etc...

  • Q: HKS el headers   Diego 7 months ago


    Would the hks equal length headers fit my 05 STI?

    • A: Yes, These will fit 2004-2018 Subaru STI.

      Brady R 7 months ago
  • Q: Hks headers  Peter 1 year ago


    Does this fit on the 2015 sti

    • A: Yes, this will fit 2008+ STI models.

      Brady R 1 year ago
  • Q: Tune  Ckadds 1 year ago


    I understand that to get the full benefits out of these headers that you need a tune. But to just imstall them and run them do i absolutely need to get my car tuned right away?

    • A: No, a tune is not required after install. As you mentioned, you wont see the full benefit of the header until you do have the tune done.

      Evan M. 1 year ago
  • Q: Fit with morosso oil pan  teeth1ng 2 years ago


    Will these fit with a morosso oil pan installed that is 04 Sti fitment

    • A: Unfortunately, we aren't able to confirm if this will fit with an aftermarket oil pan.

      Chris W. 2 years ago
  • Q: Hks EL header  Shep 2 years ago


    Will this header work on my 2002 wrx with a 2.5 oil pan

    • A: We are not able to confirm the fitment for the 02 WRX.

      Jared A. 2 years ago