Hondata K20A/K20Z1 Intake Manifold Gasket
Part Number: K20A-IMG
Inside Continental United States
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Will It Fit Your Vehicle?
The Hondata intake manifold gasket (IMG) improves horsepower by reducing the heat transfer from your cylinder head to intake manifold. This gasket fits the Honda/Acura k-series K20 cylinder head which comes on the Acura RSX (DC5), 02-05 Honda Civic Si (EP3), and Honda CRV.
Hondata have developed a special high temperature insulating gasket which replaces the stock intake gasket. This and bypassing several heat sources significantly reduces the transfer of heat from the head to the intake and incoming air giving you up to 5% more power.
Turbocharged cars often use an aluminum intercooler to cool the air compressed by the turbo. The intake manifold is also made of aluminum but because it is heated by the head from combustion and coolant, works in reverse to an intercooler by heating the intake air by as much as 50° C.
Fact: For every 3.3 °C (5° F) rise in intake temperature, air density drops 1%. The hotter the air, the less fuel the computer injects to compensate for reduced oxygen. HondaLogger datalogging software has enabled us to measure intake air temperature under varied driving conditions.
Around town, testing has shown an average drop of around 10 degrees C which is good for around 3 percent power increase. Remember though that 3 percent power increase is difficult to feel. You'd feel a greater change in performance getting rid of that passenger. In certain conditions a 30° C drop has been measured.
The Honda manifold is heated in up to 5 places. From the head, the interior heating takeoff hose, the cold idle valve, the idle control valve and the throttle body heater. The Heatshield gasket kit contains an insulating gasket, and installation instructions. A race version only version with the thermostat bypass blocked is also available.
The graph above shows the results of installing the Heatshield gasket and bypassing the throttle body heating and idle control valve heating. If you examine a Type R intake manifold you will find that most sources of water heating are removed. Further temperature drops are possible when in addition the interior heating hose is blocked. What the graph shows, is that as you open the throttle, the intake temperature drops slowly as it cools the intake. When you descend a hill with the throttle closed or drive around town on a light throttle the temperature climbs quickly. It takes a good 15-20 seconds for the temperature to drop again when you open the throttle. So if you start your 1/4 mile drag with a hot intake manifold - you are only starting to develop maximum power near the end of the run when the intake has been cooled. The Heatshield gasket kit gives you 4-5% more power immediately by lowering the intake temperature.
31 reviews for Hondata K20A/K20Z1 Intake Manifold Gasket
4.903225806451613 out of 5.0
5/11/2017 by Deandre Murray
There is no lie told when they say MULTIPLE uses, I have removed my intake manifold Multiple times and every time I bolt it up it seals no problem thanks to this gasket.
6/13/2016 by Mark C
This product is such a great, easy and cheap mod! I was running 50*C IAT on 25*C days. The day after I installed this was the hottest day yet this summer at 32*C and my IAT didn't get over 41*C unless at idle... Plus it's a reusable gasket!
2/13/2015 by Michael DiDomizio
Great quality piece and a must have when replacing your manifold..
8/10/2014 by Jason Arsenault
This gasket is much more heavy duty and cuts down on heat transfer. Well worth the cost in the long run.
12/30/2013 by Based God
Great item, really took the air temps down like crazy, would recommend even on a stock RSX :-)
12/28/2013 by David Settimi
Great Quality, easy install. Worth the $45 bucks!
9/11/2012 by Brandon
Bought the gasket because i had an intake manifold leak worked great for that and noticed a little power difference so job well done
6/19/2012 by Pao
HONDATA all the way for RBC IM upgrade
Ordered December of last year then received after 3 business days, installed this gasket w/ no issues whatsoever then I'm satisfied before the year ended
5/12/2012 by Joe
Amazing Temperature difference compared to the crappy stock gasket. Intake is a lot more cooler. Installation wasn't too bad..took me just under an hour and a half. Thanks Club RSX!!
4/3/2012 by NUR_DC5
Purchased the hondata IMG and P2r TB gasket. after installation and coolant bypass i was suprised to feel that i can actually keep my hand on the intake manifold and TB. No check engine light either! GREAT BUY
1/12/2012 by Wes
Easy fitment, great quality
11/2/2011 by Steve
Pretty good gasket..... Paired this up my direct ported nitrous RRC manifold. It really keeps the manifold cool. Its deff a noticeable touch difference in heat. I cant speak on power gains because i added RRC but great product hands down..... CLUBRSX FTW!!!!
5/22/2011 by Anthony Wilkerson
Cheap mod for small gains
The installation was a pain but well worth it especially for the price. Haven't noticed a difference yet, but I haven't gotten up in the RPMs yet. When installing on base like some say, use vice grips on the left stud to get the 2nd piece of the IM off.
4/29/2011 by Israel Leon
Worth the money!
I highly recommend this gasket if you are looking to replace OEM gasket or just looking for an excuse to get under your hood. I'm surprised the price isn't more because of how well it decreases the temperature throughout the intake manifold. It may take a while to install (at least for me it did due to stripped bolts on the injector base) BUT it's well worth the time and money you invest.
3/28/2011 by Isaac Suarez
Fast shipping to Puerto Rico. The package arrived in perfect condition with all the parts. This gasket is a must even work with my JR supercharger.
1/24/2011 by Jacob Henson
first time taking the intake mani off is a pain but this is a great gasket
11/1/2010 by Jason
Does the job
Was a little bit harder to install then I thought but has done the job it was made for very happy with it... It does reduce the temp without a doubt... Thanks
7/4/2010 by Jay
Hondata intake manifold gasket
Took about 45 mins to an 1 hour to install with the DIY on here, helped alot thanks victor_s.Needed another person also to help pull mani so i can slip img in. All in all very well worth 50 bucks.test drove at night when done and car pulled good all through vtec. Then went home and touched mani was alot cooler then before.Must have on the Type-S!...cai,img,h,reflash,ss,muffler.thanks ClubRSX!!!
4/5/2010 by Rudy Infante
A Must Have
It took me a while to get it installed but once I got it on and bolted back up, definitely worth it. When you take out the old gasket and see that it's paper thin, you can understand why it is night and day between OEM and the Hondata version. I really recommend a magnetic catch because a lot of frustration and time went into finding bolts that fell when unbolting. I also did the throttle body bypass and am pleased with being able to do two mods at the same time.
3/7/2010 by john
installation was a breeze. i recommend also doing a coolant throttle body by-pass to keep it extra cooler. if you live in the northern regions, dont do this. TB will get a bit too frosty and will stick. after installation be sure you do a idle learn procedure. if you don not, your car will idle at 2K and bounce, it will sound like the limiter is kicking in. otherwise great product!
1/22/2010 by Jason Rogachesky
Hondata Rules, Gasket Is Good
There are two things you should know before installing. 1) This gasket is thick and will move your intake manifold 1/2" away from your engine (toward the front) which means (for me at least) that my AEM V2 CAI mount doesn't line up anymore. 2) If you are going to upgrade to a Type-R PRC intake get the one that is available with it because it is already modified to fit it. 3) Also, despite what some say it IS a PITA to remove and install an intake on the RSX Type-S. Have some universal joins for your sockets, various extensions, and nimble fingers.
1/13/2010 by Mike
looks good, works great, quick shipping, convenient.... what more can I say? I highly recommend using a pry bar to remove the intake manifold, however!!!
10/23/2009 by intheredsdc5
cheap... why not?
I can't really tell a difference using my butt-dyno. However, it was cheap and it is a reusable gasket.
9/7/2009 by Andy
This product is totally worth the money
Shipping was fast like it always is from crsx. Product was exactly as represented. My manifold is definetly cooler but I cant say I really feel any difference in power but its probably there... MAKE SURE YOU RE-TIGHTEN THE BOLTS AFTER A COUPLE HUNDRED MILES!!!
8/6/2009 by Nick
product does what its supposed to and install was fairly simple 5 stars for sure manifold is definitely cooler and car seems to have a little more power overall great product recommend to everyone
8/3/2009 by albert v
nice for the price
install was a PITA! but it was kinda fun learning along the way. does help stay cooler, no noticeable power gains tho but i believe they're there. you will need a frieds help and some know how. temp gauge is about a notch or 2 cooler now so am happy.
6/18/2009 by Jordan
Great with RBC
Easy to install, keeps the mani way cooler, even after a spirited run.
5/27/2009 by vash_the_stampede
great addition to IM install :thumbsup:
i recommend getting this part *not knockoffs for a few bucks cheaper* especially if you live where it is hot. installed this with prc mani and all the p2r additions and am happy with my purchase
12/5/2008 by Brian
Keeps my mani cooler
I decided to buy this because I switched over from a CAI to a SRI and wanted to compensate for the inevitable heatsoak (don't know if this really helps though). The gasket is so much thicker than the stock metal one and it seems to really keep my manifold a lot cooler (to the touch). Don't expect crazy performance gains though. It's a fun little project that has decent gains for the money.
8/22/2008 by DoubLe-DoSe
Great for the money
Install isn't too bad, definitely worth it. I can keep my hand on the mani, though it's still pretty hot. I would recommend getting this with the RBC and doing both in one go.
7/28/2008 by Hamburglar
sturdy design has stood up to several years, heat and boost! Noticed a difference in temps by a few degrees.