Z1 350Z/G35 VQ35DE Plenum Spacer, Performance OEM and Aftermarket Engineered Parts Global Leader In 300ZX 350Z 370Z G35 G37 Q50 Q60 - Z1 Motorsports
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Z1 350Z/G35 VQ35DE Plenum Spacer

starstarstarstarstar_half 4.9/5 - (19 Reviews)
Fits models: 350Z / G35 / FX35 / FX45

Product Description

Increase your 350Z or G35's performance with the Z1 Plenum Spacer!

This angled aluminum plenum spacer for your 350Z - G35 VQ35DE is specially designed to increase airflow to your engine while allowing you to keep the factory strut tower brace.  Raising the plenum provides increased air flow to the front cylinders. The direct result is noticeable gains in mid range torque and in top end power. This plenum spacer is the best horsepower upgrade for the money, and combined with other supporting mods and tune can net you a good deal of extra horsepower. This plenum spacer is a tapered design and raises the plenum 5/16''-1/2''.

Includes:

VQ35 Plenum Spacer - 350 Red

View Z1 Motorsports' Installation Manual HERE.

Quantity:

List Price: $220.00
Special Price: $198.00
You Save: $22.00 (10%)
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Z1 350Z/G35 VQ35DE Plenum Spacer
Z1 350Z/G35 VQ35DE Plenum Spacer
$198
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Finish:Coupler Color:
Z1 Motorsports 350Z / G35
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JWT 350Z Pop Charger Intake
JWT 350Z Pop Charger Intake
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Bundle Price:
$386

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Questions our customers have asked

What size is this spacer?
It is an angled spacer. 7/16th to 3/8th.
Wouldn't you need 2 oem plenum gaskets?? One for under the spacer and one for above it?
We include one gasket specifically for the top of the spacer. We reuse the the lower metal gasket. If you wanted to add a fresh lower gasket we have them available here: (Link)
I bought this set a while back and now I cant seem to find the rubber pieces. I see you have the gasket priced at $28.00 which i will likely need but I also need the (6) M6 Washers w/ Bonded Seal. Are these sold separately? Are you guys able to source them?
Hi Will thanks for the inquiry! We now have these available for online purchase at the link below. We have these in stock and ready to ship. Thanks for your patience! (Link)
i bought this 4 years ago, ive had the plenum off a few times now. Can i purchase just the washers with rubber on them? mine are shot. thanks
You sure can Joe! Follow the link below and it will take you to the bonded washers. Thanks! (Link)

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What our customers say

See all reviews
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Tyler
April 17, 2020
Don’t be like me and over torque the bolts. I thought it said foot/lbs and not inch/lbs.
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Dean
January 27, 2020
Easy 5 stars. Took me a couple hours because of inexperience with working on cars, but really any driveway mechanic can do this job. Can feel the extra power over 3000 rpm.
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Robert
October 25, 2019
I ordered this 2 days ago came in the mail today so super fast shipping I put it on in like 45 mins and let me tell you this feels so amazing and DEFINITELY changed the note of my exhaust to a deeper sound I couldn’t be any happier !!! Thank you z1
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Seyhan
January 3, 2019
Bought and installed the intake spacer on my First Gen FX35,driving it normal you can’t tell much off a difference but after 3000 rpm she definitively pulls much harder then before! My intake air temps are about 5-10 degrees cooler also.Great products at a great price.Awesome team. Thanks Z1!
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Carlos
November 29, 2018
really high quality peace the best plenum spacer for the de hands down
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David
February 14, 2018
Spacer kit came with its proper tools and made installment simple following the directions it came with. The only thing is my OEM strut bar did not fit well with the few washers it gave me. Be prepared to have M10 30mm longer bolts and Thicker washers just in case, because the Strut bar is considered a separate fix. Other than that, the spacer works great and gainned lot more mid-torque. 04 350z
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Jeremy
September 10, 2017
shipping was very fast. very satisfied with my VQ35DE Plenum Spacer. will do business with you guys again
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Brandon
August 11, 2017
This is one of the most common modifications for the VQ35DE motor. I installed it on my 350z and I noticed a deeper engine sound at higher rpms especially at full throttle. I can also tell there is an increase in acceleration response above 3000 rpm. This was a simple install to do except adjusting the strut bar with the washers. Overall, I'm pleased with the results.
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Andrew
April 7, 2017
If you are reading all these reviews, it probably means you are on the fence about clicking the add to cart button... just go ahead and click it! I was also on the fence about ordering this for a very long time. I finally bit the bullet and ordered it... I should have done this YEARS ago. This is the best $170 dollars I have ever spent on my Z! You know how there's those mods you do where you think you maybe can feel a difference but you aren't sure? Well this isn't one... I instantly knew this made a huge difference in mid and top end HP and torque. It definitely feels much stronger. I'm not going to say it's some crazy power gain, but it is definitely noticeable. Just make sure you do the ECU reset. Also when installing be sure you don't pinch the rubber seal around the oil cap between the plenum and spacer, or you will have issues! This is a very simple and extremely satisfying mod to do for a small amount of cash. Once again, a other great product from Z1 motorsports that has put a big smile on my face!
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Jeremiah
February 17, 2017
Your product works way too well. I noticed immediate throttle response upon installing. I was shocked how well this mod works. Thank you z1, I am so thrilled! Also shout out to Z1 for including the instructions to install, youre the real MVPs.
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Israel
December 29, 2015
So here's my take on this plenum spacers. You can definitely feel and hear the difference. Much more responsive. Expect to be surprised when you punch it after installation. And your car will growl after as well. I was really pleased. Except in the instructions it says to use some of your old bolt for hole #8 #9 #14 and #15. Which did not reach at all way too short. That resulted in a horrible vacuum leak and horrible idle problems. So I had to improvise. Order a plenum spacer fastener kit, same issue and ended up usining some of the longer bolts that came with this kit te replace those and problem fixed. And I see the TRUE potential and I love it. I suggest you get a buddy to help its hard hold up the plenum and align the spacer and 2 gaskets correctly.
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Alan
January 29, 2015
Unlike the fitment problem I had with the bolt on wheel spacers, the plenum spacer install went smoothly and the fitment was perfect. Took about an hour to remove and reinstall, and the another half hour to install the pop charger. That went smooth as well, everything fit according to plan.
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Diego
December 4, 2014
Purchases this item Friday, just got it today. Installed it, A's I live it!! Real easy to install, did it by myself. Noticeable increase in power, and has a great sound under WOT!!! A must get!
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Kelly
May 30, 2014
Quick,Easy,Nice price, perfect starting point to increase power!
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Gabe
October 12, 2012
Awesome great engine upgrade a must own! For the price and getting almost 10+hp for it you can't beat it! Great service from my boys Jon and Chuck also the packing peeps who deliver with the quickness!
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Gabe
September 29, 2012
Awesome service and results! This has to be the best 10+hp mod under $200 you can own a must have!
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Dajanaye
December 22, 2011
Love it! Simple to install and definitely makes a difference in performance :)
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Ryan
November 3, 2010
The Z1 plenum spacer is a great addition to any Z. Very easy install and can be completed with basic hand tools (sockets, and ratchet ect.). My tip would be to remember to adjust the legnth of the stock strut tower brace prior to re-installation. Even with using the supplied spacers the bar needs slight adjustment for engine clearence. End result is a slightly deeper more agressive exhaust note. My 05' touring AT felt quicker when accelerating past 3k rpm's. Great product, easy install, would definitly buy again!
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Ryan
November 3, 2010
The Z1 plenum spacer is a great addition for anyone looking to do a quick simple modification to thier Z. Installation was easy and straight forward, able to complete with basic hand tools (ratchet and sockets ect). Most difficult part is re-installing the stock strut tower brace. My tip would be to remember to adjust the legnth of the strut bar prior to re-installing, you\'ll need to adjust for engine clearence even with addition of the supplied spacers. The end result is a stealthy mod that sounds slightly more deep and agressive. Used on my 05\' touring auto - feels more responsive and will definitly notice quicker acceleration past 3k rpm\'s. Great product and a great price! Would definitly buy again.