Z1 Motorsports High Pressure Radiator Cap - Z1 Motorsports - Performance OEM and Aftermarket Engineered Parts Global Leader In 300ZX 350Z 370Z G35 G37 Q50 Q60
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Z1 Motorsports High Pressure Radiator Cap

starstarstarstarstar_half 4.7/5 - (29 Reviews)
Fits models: 300ZX / 350Z / 370Z / JUKE / G35 / G37 / Q50 / Q60 2014-2016 / Q60 2017+ / R32 / R33 / R34 / R35 / S13 / S14 / FX35 / FX45

Product Description

Z1 Motorsports High Pressure Radiator Cap for all Nissan and Infiniti models including the 300zx, 350z, G35 and 240sx.

By increasing the pressure within the coolant system, you can thereby lower the boiling of coolant itself.  In other words...Your car will run coolerLocated on the radiator, the Z1 Motorsports High Pressure Radiator Cap replaces the stock cap which has a factory relief pressure of 1.2 Bar (17.4 PSI) with a relief pressure of 1.37 Bar (19.9 PSI).

Produced with OEM quality, but with the performance advantages of an aftermarket radiator cap.

Sold individually. 

Quantity:

Price: $25.00
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Z1 Motorsports High Pressure Radiator Cap
Z1 Motorsports High Pressure Radiator Cap
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What our customers say

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Anthony
September 8, 2021
I have a stock cooling system and this cap has been on for 20k+ no problems
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Fabian
September 4, 2021
It really works, get it. You will not regret it.
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DAMON
August 12, 2021
Works great! Better than OEM
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Marcus
August 10, 2021
Installing my new Z1 Motorsports High Pressure Radiator Cap was like putting the cherry on top of my build.
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Roberto
July 26, 2021
Works just as advertised. Maybe even better.
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David
July 20, 2021
Z1 sticker on the radiator cap adds 10 HP for sure. Fits like OEM.
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Adam
July 14, 2021
Haven't had any issues with it. Looks alittle better then an oem one.
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Jeff
June 27, 2021
Didn’t necessarily need this item but it looks great and well worth the money
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Jeffery
June 25, 2021
I replaced much of my cooling system and this cap goes great with the new all aluminum radiator. Does what I need it to, plus I get to show off Z1! What's better than that?
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Michael
June 3, 2021
Reworked my whole cooling system and this thing was a key!!
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Edwin
May 11, 2021
Great product! Was having some leaking with oem caps. Purchased these high pressure z1 caps and problem solved!
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Elijah
April 26, 2021
Perfect fit good replacement for doing maintenance
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Justin
March 28, 2021
Looks better than OEM. It fit in the radiator but at high temp my cap was leaking coolant all over. Might just have been a defective cap, or a defective mechanic! Got a new cap with my new mishimoto radiator anyways.
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Adam
March 14, 2021
I have seen no difference with this cap verses the factory cap
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John
February 15, 2021
Didn’t fit the alpha expansion tank correctly had to bend them alittle causing a small leak and unusable
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Beau
February 13, 2021
Bought as a backup, same pressure as Z34 stock item with added 15hp due to Z1 logo
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Ricardo
February 9, 2021
Z1 the world! Loving my new radiator Cap. It’s always important to replace little parts like the radiator cap. Specially after so many years of use they can start leaking, what’s better than a Z1 radiator cap to replace the old one 👍🏼
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Scott
February 4, 2021
If you plan on upgrading your cooling system you will need these. Even the nismo caps gave me leaks. Strapped these suckers on and never had an issue
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Jorge
January 25, 2021
Excellent product, works as described. Fit and finish very good and also lightweight.
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Gregg
January 25, 2021
Fit perfectly! Great product from a great company.
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Tyler
December 7, 2019
Fitment is perfect, Cap looks great, and the price is only a tiny bit higher than OEM which is excellent.
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Zachary
November 9, 2017
Excellent cap, good piece of mind for those hot summer days. Only issue is the sticker on top did not last long, no big deal as I covered it with a cap finisher. Otherwise it's been great!
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Angel
April 3, 2017
ok heres the deal. love what i got but you will not see a tempature drop unless you have a quicker opening tstat like mishimoto as well as an all aluminum rad or a larger one. also if your rad is a bit old and you like to get on it a lot you run the posibility of cracking the plastic fill neck on the stock rad. exactly what happen to me but not mad at all about it. of course higher pressure means risk of weak points breaking. also one the coolant will boil off when the cap does open up so watch your collant level especially if you like to push your car like myself. great product but a good idea to purchase supplemental upgrades with it to take full advantage of what this cap offers! this is i believe the highest pressure cap you can get for a stock rad and im literally looking for radiators that have a stock style neck so i can make sure i use this bad boy lol. love it! have the mishi tsat now and gettin rad soon then will install all at once and ill be comfortable knowing my engine will literally never over heat no matter how hard i drive her unless some other unrelated part goes like a pump or belt. just fking buy it already bro lol
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Ricardo
November 21, 2016
better than nismo... best replacement and great value for the money
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Matt
March 15, 2016
Great product. Had on my car for almost 15k, nice cheap upgrade. You've spend $20 on something worse. Highly recommended
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Artem
July 23, 2015
Very good quality! As described. Easy to use with Howe Radiator!
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John
July 18, 2014
Excellent construction. Definitely tighter spring tension. Recommneding upgrading/replacing all old worn out hoses to avoid any unexpected coolant leaks.
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Kelly
May 30, 2014
Great quality,great looking radiator cap,easy engine dress-up
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Brandon
May 2, 2012
Great Looking Radiator Cap. If I'm not mistaken has the highest relief pressure rating out of any radiator caps I've seen. Great Job Z1!