Cometic HP multi-layer steel cylinder head gasket for the 1.6 litre Gamma II turbo, 78 mm bore, 0.024 in thick. A stainless multi-layer gasket with embossed sealing beads, built to hold a head clamp that a factory gasket was never asked to hold.
Why you would fit one. The factory gasket is the usual limit on a tuned 1.6 turbo. Push boost and cylinder pressure past stock and the head lifts fractionally at the hottest cylinder, the fire ring loses its seal and you get coolant loss, a misfire under load, or combustion gas in the cooling system. A multi-layer steel gasket rebuilds the seal with spring-steel beads that follow that movement instead of being crushed by it.
0.024 in is a thin gasket, and that is deliberate. It is about the thickness of a standard gasket rather than a raising shim, so it does not drop your compression ratio. That makes it the right choice when you are rebuilding a healthy engine for more boost. If you are running forged pistons and want compression taken out of the engine, you want a thicker gasket instead — ask us and we will quote one.
Fitment. Cometic publish this gasket for the 1.6 litre Gamma II turbo (G4FJ). On the cars we sell that is the Veloster Turbo and Veloster Turbo R-Spec, the Elantra GT Sport, and the Kia Forte Koup SX and Forte5 SX. Tell us your year and we will confirm it against Cometic's own application list before it ships — the 1.6 appears in several states of tune and not all of them are this engine.
This is a bored-block gasket size. 78 mm is the gasket bore, slightly larger than a standard 77 mm cylinder, which is normal and gives the fire ring room to seal. It suits a standard bore and a light overbore alike.
Head bolts are not reusable. The factory head bolts are torque-to-yield: they stretch permanently when first tightened and must not be re-used on a rebuild. Budget for a new bolt set, or head studs, with this gasket. We would rather tell you now than have the job come apart later.
Details: one cylinder head gasket; Cometic HP multi-layer stainless steel; 78 mm bore; 0.024 in (0.61 mm) compressed thickness; Cometic's application data lists it as a three-layer gasket with a valve-pocketed bore shape.
Surface finish matters more than the gasket. A multi-layer steel gasket needs a smoother deck and head face than a composite one. If the head is coming off anyway, have both faces checked for flatness and finish while it is apart.
Availability: ON ORDER at our distributor as of 6 November 2026. Cometic build to order, so allow for a lead time.
Not sure this suits your car? Ask us before ordering — we would rather check the fitment than process a return.
Let customers speak for us
Solid shipping ,good communication ,great product 5stars all the way
First let's preface I have tried three other tuners. Not bad mounting or name dropping as they all were solid tunes. But Daniel just has that magic touch when tuning the 1.6 platform.
The car has a buttery smooth power band making the car feel like a larger displacement six cylinder over a turbo charged car. Plenty of fun to be had at any speed or RPM range.
He will take the time to get you dialed in perfectly for your car. No canned tunes here folks. And if you are a EK1 user three tunes for the price of one simply can't be neat.
I received the Stage 2 tune. Here are my thoughts:
- The shifts are buttery smooth
- I love the auto shift @2000rpm when cruising around town; saves me an extra 2-3mpg overall
- Driving in traffic is a dream now, much better than stock. I don't even hear that annoying shifting fork anymore, lol
- Any and all DCT slips are gone
- The increase in torque limit! This opened up my N75 Stage 3 ECU tune; I can feel the difference. The last time I dynoed, I got 289 lb-ft of torque. But it feels much more substantial than that!
- The clamping force is unreal. I did a run from a dig, and it hooked and slammed through the gears all the way to 7k rpm in each gear. Amazing.
Conclusion: This TCU tune is a must-have. If you have an N75 ECU tune, it is an absolute game-changer! Especially with the Redline MT-LV fluid that I'm running. I can't wait to get my retune with water meth injection. Daniel and the rest of the N75 team are the best!
Works like suppose to be fast delivery after installation 5 minutes drive TPMS sensors lights off everything is normal like from factory 👍👍👍
![Hyundai Elantra N TPMS Sensor Set of 4 [OEM Hyundai MOBIS]](https://cdn.shopify.com/s/files/1/0276/1359/3623/files/359598029_246649464881156_6848003515050026659_n_70x70.jpg?v=1690929846)
Product was very easy to install and what a difference in shifting also n75 was super awesome to deal with will shop here again
After using the N75 tune for a couple of months, I can confidently say that it offers the best value for your money on the market. I've tried SXTH and LAP3 tunes before, but since switching to N75, I won't look back. With top-notch customer support, it ensures your car performs better, turning heads at every car meet.
Been running stage 2 off that bat and had some problems here and their regarding fueling. Daniel has been with me the whole way, answering questions and adjusting tunes while adding revisions whenever asked. He answers every question I ask even when they don’t relate to tuning.
Highly highly recommend N75!
Daniel's tuning and customer service makes this product a 10 out of 10. I'm new to tuning and he made the process a breeze. I literally laughed out loud when I first drove the car after installing the stage 2 tune. I still can't believe the difference.
Love the intake, fitment is superb, instal was easy and best of all n75’s customer support is stellar and way above average!
M45IL Kia Stinger GT 3.3TT Spark Plugs
Hands down best bov I’ve had, I got the part 5207 for trumpet sound and man. You won’t be disappointed. Shipping was fast & easy.
Looks great!
Fast shipping, easy to install, quality built.
Waiting for some more parts then dyno time!
Awesome
Perfect size and great location for the WMI port.
