Z1 350Z / G35 VQ35DE Plenum Spacer

Fits perfect, great quality

Easy install and made plenum colder for longer

Honestly i was a bit weird to install, i had to reuse some of the factory bolts which was tricky to play with. but you can notice a difference in the power. it’s very torquey now. It accelerates much faster; all though if you get a tune it’ll do a whole lot more of a difference than without it.

Comes with everything needed perfect fit and some power gain

Helped with oil consumption issue. Feels like more torque. Still need to verify, by dyno.

Easy to install and all the hardware provided was perfect replacements for worn out OE parts.

Love the performance gains from this coupled with the Z1 intake, OMG! Fitment is perfect.

Easy install, works great and no issues. Would buy again.

Where do I even begin, this plenum spacer REALLY opens up the Vq35de engine. Owning my g35 for 4 years I can’t believe I didn’t have this installed all this time, the engine Loves this mod, almost like before it was struggling and now I really can tell the difference. The car pulls harder, runs colder and on the first test drive I had a big smile on my face. This mod is a MUST for a VQ35DE.

Fit perfect! Fast delivery First mod installed back in 2021 never did the review! Excellent quality

High quality stuff! Thanks Z1

Definitely a increase in power on the top end.

Nice and easy install!!!

This was installed with other components. But overall a big difference in power. Installation was tricky but figured it out.

It was good I wish I got a sticker with it tho 😢

Coupled w the 75mm throttle body,intake n exhaust n y pipe the z is gr8!

Works well you can tell a little difference

Throttle response increase

Paired with the M spec CAI. Great bang for your buck!

Great product, great price, fast shipping. Incredible difference in engine performance, because it now solves the factory defect of the 350 engines. Lacks a detailed installation sheet. 5 STARS. Highly recommended.

I did not notice a difference in power. Instruction sheet would be helpful, I was able to figure it out. Price is expensive but its a hard piece to machine. Would I buy it again most likely not.

Again easy install had no issues with parts or shipping everything was in order

Super easy to installed instructions were great other than torque specs were a range rather being a set spec

Necessary mod for Oem plenum for some hp

I can feel the difference great product

Works as it should and holds up good

Really woke up my DE! Didn’t do much for the rev up engine. hundred percent recommend for a DE

good jump in horsepower

Good product mine had some marks on it from either shipping or the CNC during manufacturing but still quality product

Easy installation. You can feel the difference right away 10/10!

Best affordable mod! It’s like breathing through your mouth versus breathing through your nose. The motor just revs freely now. Love it. Thx Z1

First modification for a daily driver Infiniti FX35. Love how it responded, definitely feels free spirited. Did the job while installing spark plugs and valve covers. Would recommend 👌.

Plopped this on while replacing my valve covers because, "while you're in there". Good quality. Fit correctly.

Super easy install, fits perfectly, and comes with a new set of longer bolts. It gives a really nice low end growling noise which sounds so good. You can also feel a nice increase in throttle responsiveness and a maybe a little extra acceleration power.

Well worth the money! TY

Drove the car pretty easy for about 100 miles to really let the gaskets take seat! Afterwards I opened it up on the highway and could easily feel the difference in throttle response! This spacer really wakes that sleepy G35. I'm using the spacer, Z tube, JWT pop charger with DC headers and Kinetex High flow cats! Great combo for any VQ35DE

There are cheaper ones made of plastic for $100. Bought this one for the durability of aluminum. Only gave it 4 starts due to price of over $200 on special and no installation instructions. Installation was not difficult was a pain to hold washers under the strut tower brace of my 05 Z.

I hesitated first, but glad i got it and its amazing with the Tanabe air intake, not only does it sound nice but I got some extra hp n torque to the wheel..

Works as expected. Perfect fit.

It’s a good spacer, I’m not sure I noticed a power increase necessarily (because I did test pipes and a tune around the same time). Its nice quality felt solid, my tuner told me it was a good idea along with stock intake (my 03 made 270 whp) but I’m only giving 4 stars because the washers provided are not good enough to push the strut bar up, I wish it came with actual spacers and not washers.

This paired with the upgraded upper plenum, 75mm throttle body, and a long ram air intake and you have an ideal na induction system

perfect fitment , no issues with good gains on dyno

Oh boy! What a difference this spacer makes, engine just feels much happier throughout the rpm range, this is a must buy. Next step…throttle body! Can’t wait!

Nothing missing. Came very nicely packed!

Great product and high quality made really highly recommend for more torque in low and mid rpm

Part is Very good quality. It did not however come with instructions in the box and you have to re-use some of your factory bolts. The bolts on the back(throttle body side. That you re-use seem short so I recommend you pick up some a little longer from a hardware store before you strip out your lower intake plenum.

for first bolt on mod was definitely worth it for the price and time to install , would recommend and buy again!

Installation was a breeze. Quality product and noticeable increase in the low and midrange. Should have ordered sooner. Thanks.

Installing this weekend, I'm sure engine will breathe more, but great online store and quick delivery.

Great product, could feel the difference immediately after install

Shipping was fast with everything inside the box. Installation is super easy. The quality of the part is great. The performance of my 06 g35 coupe has gotten (a bit) quicker due to more air flow. In particular, living in an area where it’s extremely hot and humid is where the plenum spacer can perform at its best to provide suitable HP/WP.

Major improvement and more power is what it added to my car! Well worth it !!!

Works well can't hold u

fast shipping nicly installation Manual

Great price and all included hardware for straight forward install and no wasted time going to part store. Added throttle response and helped get my DE to 270whp with supporting bolt ons

Fitted great but I was one long bolt short and needed to sauce a longer bolt to fit correctly.

It's good better responds in higher rpm

Love it. Fits like a charm on my 04 Nissan 350z. Had to do the throttle body relearn afterwards, but highly recommend it. Will go well with my Supercharger install next month!

Feels good to breathe fresh air

Perfect fit, could of came with a manual but its fine. Youtube works wonders Overall its a good upgrade and noticeable gains

Definitely worth it, bought it for Black Friday and you don’t really feel the power in the low end but definitely high end. The car also sounded throatier on start up.

Love it!!! Although it comes with the longer bolts for the front of the plenum. I wasn’t sure what bolts to use for the back? Just made it work haha. Nothing has shakin loose yet so I’m satisfied. Only noticeable gains were in 4-6 gear. But yes you can definitely tell a difference.

I could really feel the difference about 800 rpm sooner but it REALLY came to life after I bout the UPREV tuner from Z1 and tuned it!

Can feel the difference. Easy installation

Easy to install, seems to improves power ban

I installed this item 11/08/2021. Very satisfied and you can feel the difference when I step on the gas.. Happy Customer.. Instructions come in the box which is very helpful

Bolts right in very happy with this purchase

🐐 for Nissan/infiniti parts don’t hesitate

Super swift delivery to Australia and well packaged. The installation instructions that can be downloaded from Z1 make the process very simple. I wasn't sure which bolts should have the small washers and these can cause some bolts to be too short. I took the opportunity to replace the spark plugs (an onerous task) so I am not sure that the perceived pep is due to those or the spacer. It doesn't matter since I wanted to perform the spacer mod and the Z1 spacer is good quality. My bum dyno feels that the car is peppier at around 4,000 rpm. This might be the placebo effect but again it doesn't matter. Spend the money on the one you love! :)

very nice power yes o yeah

Working great so far for me, definitely woke my G up a bit. Had done a few pulls vs identical car (air intake) vs (air intake w/ z1 plenum spacer) an let's just say it pulls harder up top. For a thrilling drive, I would recommend this product. Or save up for the kinetix honestly. It's up to you.

Instructions where easy to understand and the install did not require a whole lot of tools or experience.

Butt dyno didn't notice anything different, but my ears sure did. This spacer adds a great intake sound.

Works as advertised. Easy install and give a little more response to the car

Easy install and definitely feel some difference in power

Fits great on my 350Z 05 DE. Would recommend to a friend. Easy installation

Great upgrade to prevent future air/fuel starvation issues later. Also, helps in performance/throttle response.

Everyone knows the first modification someone should do to their Z or G is a plenum spacer. I made the mistake of ordering one off ebay by Blox, it was about half as much as this one but broke within a week or so. Z1 includes the additional plenum gasket as well (I don't think any other companies do). You can IMMEDIATELY feel the difference once the spacer is installed. Strong to decent gains throughout the entire RPM range. Get this with other intake/exhaust modifications to really bring the car to life. Great product as always from Z1.

It would make more sense to have another gasket to go with and hardware could use an upgrade for the price especially if your in Canadian because shipping from them is pretty brutal otherwise good product

Did this in 1 afternoon, comes with everything you need, sounds better and opens up midrange power. You’ll need to mess with the strut bar because if not, the plenum will touch it when revving so you’ll need to adjust it. I was able to even reuse the plastic engine cover after messing with the strut bar for a couple miniutes.

Good product, but the only problem is that it is causing my car to run lean, and now I need to find a shop to tune the car.

Love the spacer. Can feel a better response

Got this for my fiancé & you can definitely feel a big difference on top end we have a custom exhaust on the G35. This spacer made it sound deep nice tone exhaust! Deserves a 5 star rating 🙏🏽

Easy install the set didn’t come with enough sealed washers so I had to make my own beside that noticeable difference in tone of car

Works great just like I thought it would.

Loved it really easy install

Very easy install and works as advertised

Great product, better fuel economy, better throttle response and more power at higher rpms.

you can feal the differeance with this mod. not hard to install.

Great product much better than the OEM struts I would highly recommend.

Great ! Easy install and can definitely wake your g up !

I ordered this before I got my UpRev tune. Shipping was fast. The spacer was easy to install and it was a perfect fit to the plenum. Customer service answer any questions I had about installation.

Instructions that were provided, lifesaver. Great product and it complements the throttle body I purchased. Car breathes better and you can feel some HP out of this mod. Great product

Really glad I got this product for a good price and quality

Awesome product!! I always said the Z should have come with this! Definitely allows a bigger opening for better breathing.

Arrived well packaged and upon opening and inspecting I am very happy with this product.

Wasn't sure whether this was worth it but when I found out it works even better for revups I felt like I had to get it and I don't regret it. Quick solo installation and I am feeling more responsive throttle but that's including other mods as well.

I upgraded to this from a plastic blox spacer and what a difference in quality and fitment The only thing i wish is that it came with all new hardware for the plenum instead of re-using sone of the oem bolts. But no big deal!

I bought this 1/2" spacer for a 2006 Nissan 350z, and after about an hour, it was installed. Upon starting my Z, it sounded more throatier, and when I took off, I immediately felt a difference in the acceleration, especially in the mid range. I am very well pleased with this product, and the instructions were very on point. Don't forget, buy some copper permatex, and put a good seal on top of the existing gasket before placing the spacer in. After placing two washers on each strut bolt, my strut bar went over my engine without touching my hood. This is the first of many upgrades.

Not your average placebo mod. Will make yo Z woke tf up. Good modification Ftw!!! Thank you z1motorsports

Great quality spacer. Backed up with the Dino benchmark (see the Banana Build vid). I also paired this with cold air in-take and Motordyne’s ISO Thermal Kit… detailed Instructions easy to follow. Most of the time was spent cleaning the lower and upper plenum prior to reassembly.

Love it so much guys!! Thanks again. definitely recommending to all my buddy’s. Really wish I could get some stickers to put on my cars . That’s a lot god bless.

The spacer is very well designed and manufactured. A few suggestions though: 1) Add to the instruction sheet that when installing the spacer, be sure to check that the oil filler cap collar is not stuck between the spacer and the intake - seems to be a common issue, and I ran into the same thing. 2) Provide screws for all the holes so they all match, or source screws that will appear like the oem screws for consistency. But otherwise, a fantastic product!

This is a must for any VQ35DE I installed it when i got home from work in maybe 30 mins went on nice looks good and the you can really feel a difference in the car you definitely have to mind you foot

Installing took about 20 min. Definitely felt better throttle response and made my exhaust louder worth the price i think

Great product, came with everything I needed and even plenty of spares. Installing this gave the mid to high end rpm a Much lower tone at WOT. The Z Tube gave the low end the same effect but struggled to flow air without the spacer. Overall very satisfied and worth every penny

Best bolt on for noticeable gains. Quality part. Instructions were easy to follow

For sure feel more power and torque as my butt Dyno feels. I love it!

This thing is mint. It’s 9/10 doctors approved the 10th doc has a genny (he’s just salty because the other 9 who drive VQ cars always beats him after they added the spacer) it even helps on gas mileage. NOTE : I am not liable if ur VQ car doesn’t beat a genny after the plenum spacer. :)

Easy install and adds a noticeable punch around 3k rpm. Only issue I had was I had to use 2 of the longer spare bolts that came with the kit instead of using the stock bolts(per insructions) as they were too short and didnt hold the upper plenum down.

Great product, made the car feel a bit more responsive after it was tuned with it

Easy to install and butt dyno tested. Waiting for tune for final opinion.

Great quality! Had no issues while installing, pretty sure it will make a good difference for performance. Can’t wait to drive it!

Install was fairly simple and i could actually feel a power difference. Installed on my 05 350z DE non revup.

For the win on DE motors. Easy enough install. Great sound.

Easy install also after 4 rpms car feels a bit quicker no dunk yet.

Love it! Put it on my 350z DE which only had an air intake upgrade, and there's def a noticeable sound difference, along with more power after around 2.5-3k rpms

did not really notice a acceleration improvement, But averaged 24 MPG on a road trip. Have a 2004 FX35AWD, factory specs says 20MPG. AT 4 MPG pay for itself real soon.

Don’t be like me and over torque the bolts. I thought it said foot/lbs and not inch/lbs.

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.

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

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!

really high quality peace the best plenum spacer for the de hands down

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

shipping was very fast. very satisfied with my VQ35DE Plenum Spacer. will do business with you guys again

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.

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!

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.

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.

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.

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!

Quick,Easy,Nice price, perfect starting point to increase power!

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!

Awesome service and results! This has to be the best 10+hp mod under $200 you can own a must have!

Love it! Simple to install and definitely makes a difference in performance :)

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!

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.