JavaScript seems to be disabled in your browser.

You must have JavaScript enabled in your browser to utilize the functionality of this website. Click here for instructions on enabling javascript in your browser.

Now available from EPS Tuning, 70mm Big Bore Throttle Bodies for all Nissan / Infiniti models equipped with a VQ35HR VQ37VHR powertrain. The new EPS throttle bodies feature a 10mm (16%) larger throttle plate with a full 36.1% increase in surface area. This helps increase airflow through the intakes providing a slight increase in horsepower and torque, as well as increased throttle response and driveability. CNC Billet Aluminum adapters are included to allow these throttle bodies to be mounted to stock intake plenums.

 Horsepower gains on big bore throttle bodies is depentend on other supporting modifications. The more airflow that a motor demands, the more the larger throttle body will benefit the overall performance. The use of a Ported Upper Plenum (VQ35HR / VQ37VHR), Ported Lower Plenum (VQ35HR / VQ37VHR), and aftermarket intakes such as the Stillen Gen 3 or Z1 Cold Air Intakes is recommended to ensure the most gains on naturally aspirated motors.

NOTE: Because these throttle bodies feature larger throttle plates these throttle bodies will not fit with stock intakes or most couplers provided with aftermarket intakes. Options below include silicone couplers for Z1 or Stillen GEN 3 intakes, but may fit a variety of other aftermarket intakes. If larger silicone couplers are required for your intakes or you are unsure if your current couplers will work, contact us via phone or email for pricing and availability.

Z1 also recommends the use of silicone PCV Breather Hoses that can be found HERE.


  • 10mm larger throttle plate OD over stock (70mm vs. 60mm)
  • 36.1% more area at the blade 
  • EPS Tuning CNC Billet Aluminum Adapter Plate
  • Plug & Play Adapter Harness
  • Very Low Merge Angle Between Throttle Body Bore & Intake Manifold Inlet for a Smooth Transition
  • Improved Throttle Response and Driveability Characteristics
  • Compliments Larger Diameter Intake Tubes for Increased Airflow and Power
  • Proven dyno and track gains


  • (2) EPS 70mm Throttle Bodies
  • (2) EPS CNC Throttle Body Adapters
  • (8) Stainless Steel Throttle Body Bolts
  • (6) Aluminum Hardware Spacers
  • (1) Throttle Body Adapter Harness 


  • 2007-2008 Nissan 350Z (VQ35HR)
  • 2009+ Nissan 370Z (VQ37VHR)
  • 2007-2008 Infiniti G35/G37 Sedan (VQ35HR)
  • 2009+ Infiniti G37 (VQ37VHR) 

Click Image Above For Full Resolution Image

Throttle Body Install Guide can be found HERE.

Available Options:

Silicone Couplers:


Questions our customers have asked...

Will these throttle bodies fit an 08 g37 journey? I see all the 09 and up g37 will allow fitment. If it does I will consider it a part to buy in the distant future.

Response: Lane, It will work on fine!

Hi, I would like to know if these TBs would fit your Z1 intake kit without any adjustments? I bought the Z1 Cold Air Intake from you few months ago and I'm wondering if I can get those and install them with the CAI. Will there be any clearance issues with the provided adapters? Because I drilled some supports for the intake heads in front of the radiator and would like to know if I need to cut or adjust anything. Thanks

Response: Abbas, We would use a 3 to 2.5 inch transition hose to fit the Z1 intakes with these Throttle bodies. Available separately here (Link)

What our customers say...

Well first impressions on this kit I love it!!! Quality is unsurpassed. After just messing with the afr I cannot ...

Rated by Verified Customer Purchase Read More

Unboxing the new Big Bore 70mm Throttle Bodies showed that EPS took great care in packaging their product. Each TB ...

Rated by Verified Customer Purchase Read More

Got this throttle body kit for my g37 with stillen gen 3 intakes and they work like if they needed ...

Rated by Verified Customer Purchase Read More

Wonderful bigger better throttle response. sounds deeply when I turn on car, and when i drive it. Can feel the ...

Rated by Verified Customer Purchase Read More