SPDZ1 Long Tube Headers — VQ35DE/HR | Nissan 350Z Z33 / 370Z / Infiniti G35 G37
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
SPDZ1 High Ground Clearance Long Tube Headers
Nissan 350Z • 370Z • Infiniti G35 • G37 • Q50 • VQ35DE / VQ35HR / VQ37VHR
Unlock the true potential of your VQ-powered Nissan or Infiniti with the SPDZ1 HGC (High Ground Clearance) Long Tube Headers. Engineered for enthusiasts who demand maximum performance without sacrificing drivability, these headers deliver noticeable horsepower gains, stronger mid-range torque, and an aggressive exhaust note that every VQ owner loves.
Unlike conventional long tube headers, the innovative High Ground Clearance (HGC) collector design tucks the collectors higher into the chassis, dramatically improving ground clearance while maintaining excellent exhaust flow. The stepped primary design helps preserve low and mid-range torque while still supporting impressive top-end power gains.
Manufactured from premium 304 brushed stainless steel with heavy-duty CNC-machined flanges, these headers are built to withstand years of abuse on both street and track.
Features
✔ Premium 304 Brushed Stainless Steel Construction
✔ High Ground Clearance (HGC) Collector Design
✔ Stepped Primary Tubing for Improved Torque & Horsepower
✔ Heavy-Duty CNC Machined Flanges
✔ Precision TIG Welded Construction
✔ Direct Bolt-On to OEM Mid/Y-Pipe
✔ Factory O2 Sensor Locations Supported
✔ Fits Both RWD & Many AWD Applications
✔ Excellent Exhaust Tone with Increased Flow
Performance Benefits
- Increased horsepower throughout the RPM range
- Improved throttle response
- Stronger low and mid-range torque
- Better exhaust scavenging
- Aggressive race-inspired exhaust sound
- Reduced exhaust restriction compared to factory manifolds
Specifications
- Primary Tubing Diameter: 1.80" OD
- Collector Diameter: 2.50" OD
- 3/8" Thick Exhaust Flanges
- 304 Stainless Steel Construction
- Brushed Finish
- Includes Installation Gaskets
What's Included
- (2) Stainless Steel Long Tube Headers
- (4) Exhaust Collector Gaskets
- (4) Cylinder Head Gaskets
Fitment
Nissan
- 2003-2009 350Z
- 2009-2020 370Z
Infiniti
- G35
- G37
- G25
- Q40
- Q50 (3.7L)
- Q60 (3.7L)
- FX35
- M35 / M35h
Compatible with:
- VQ35DE
- VQ35HR
- VQ37VHR
Also compatible with many AWD (X) models.
Installation Notes
- The upstream O2 sensor wiring may require extension due to the relocated sensor position, we offer two types based on the year of your vehicle, look at the 2 options here:
- 02-04 350z and 03-05 G35 that have the heated O2 sensors with Blue and Green Connectors
-
O2 Extension Harness 2011+ 370Z - G27 & 2014-2015 Q50 - Q60 all Q40 12"
- Professional installation is highly recommended.
- ECU tuning is recommended to maximize performance and prevent check engine lights after installation.
Race Use Disclaimer
These long tube headers are intended for off-road and competition use only. They eliminate the factory catalytic converters and are not legal for use on public roads in emissions-controlled areas. Please verify your local emissions regulations before purchasing.
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.