Product Description
The Z1 Motorsports Silicone Replacement Intake Couplers replace the failure prone factory rubber intake couplers on all VQ35DE equipped Infiniti G35's. Over time the factory couplers crack, creating harmful intake leaks that result in lean running conditions.
These are the last intake hoses you will ever need. Unlike conventional stock rubber couplers that deteriorate over time, dry rot, and ultimately crack this silicone will stay soft and never degrade. Best of all they cost far less than new OEM rubber hoses!
Z1 Motorsports offers a full line of silicone hoses for the G35 that will be the last hoses you will ever have to purchase. There's no reason to consider anything else.
Available in Black, Blue, and Red.
Intended for use with OEM intake ONLY.
Fits:
- 2003-2007 Infiniti G35 Coupe
- 2003-2006 Infiniti G35 Sedan

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Quincy-Debari
December 30, 2024
I ripped my OEM coupler trying to install my oem intake after radiator fan replacement. I thought I had to buy an aftermarket intake to fix the issue. I quickly searched on Z1 to see if they had a solution. I order these and problem was quickly solved!
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Michael
March 1, 2024
Look great. And work exactly as advertised. Im using them on my stock intake in place of the accordion style. G35x
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Brandon
January 20, 2024
Little rough on the install and one of the clamps were broken but works well
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Albert
October 31, 2023
Works as should and good replacement for those worn stock hoses.
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RANDALL
July 27, 2023
Great replacement for torn OEM couplers. However, the length and toughness of these makes it more difficult when you need to remove and re-install the intake tubes. I ended up trimming a half inch off each end of the straight coupler to make it a little easier when you need change air filter or spark plugs.
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Anthony
June 7, 2023
Had these installed for 4 years and see no degradation or deformities. Good quality.
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Jeffrey
October 22, 2022
I prefer the OE parts, but for the price difference, these work fine. I’m a little concerned about the lack of flexibility, but it’s been over a year with no issues.
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Timothy
July 12, 2022
Ordered these along with clamps and the throttle body gasket; everything arrived relatively quickly. Parts looked and felt solid, definitely fells like these will last longer than the OEM couplers. Once installed, everything fit snug, just like OEM fittings. Looks pretty good as well (went with black). Would recommend to anyone who’s looking to replace old or damaged couplers for their G.
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Gage
May 17, 2022
Great quality, fits perfect with the stillen z-tube intake. Definitely recommend the add on clamps, can’t beat em for the price.
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Alexander
May 4, 2022
Works great and is an improvement from factory couplers.
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Dewayne
February 8, 2022
Nice fit for the G35 with Stillen Z-tube. Feels like quality silicon. Wasn’t too tight or too big
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Bradley
December 11, 2021
Great fit, the bands that I had ordered to attach these were too small, but it was just a couple dollars everything else was on point
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Victor
October 12, 2021
I got these to replace my old torn OEM couplers, they work well, look great, and do the job.
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Hiromi
September 30, 2021
High quality parts! Went for the red color option and loving it!
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Kyle
September 6, 2021
These couplers are a excellent cost effective way to replace dry rotted and cracked intake couplers. You lose a little flex when reinstalling your intake pipe but you get a longer lasting better looking product in the end.
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Anthony
August 11, 2021
Good replacement tight tight fit. Looks good.
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Jordan
June 3, 2021
Much better than OEM couplers.
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Lamont
May 19, 2021
I so glad you guys had this part. Works much better than the original one. Thanks!!.
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Norman
April 24, 2021
I got the red set and they made the engine bay pop. They fit well and are easy to install.
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Tommy
April 23, 2021
My original coupler cracked with the heat and these replacements work great. So for no issues. Very happy I bought and it looks better than the originals.
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Brendan
April 5, 2021
Good fit, thicker than the OEM couplers. Recommend them as a replacement.
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Joshua
August 30, 2019
Perfect fit, build quality, and looks great. Exact specs of oem, so install was as quick as you can install couplers, and it brightens up your bay. You cant find these for a better deal or quality anywhere else.
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Stephen
December 9, 2017
Fit perfectly with Stillen Z tube and stock box. Recommend picking up two clamps with them as the stock clamps on the post MAF hose will likely be an aggravation.
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