Skip to content

labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE

labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE is a high-flow T-304 stainless steel exhaust upgrade priced at $114.15. Designed for improved exhaust flow, it boosts horsepower and torque while delivering an aggressive deep tone—ideal for performance-focused 350Z and G35 VQ35DE engine builds.

$114.15

● In stock

Buy at Lab Work Auto →

Price and availability may change. Click to see current details on Lab Work Auto.

Key features

  • T-304 stainless steel construction
  • 2.5-inch inlet, 3.0-inch outlet
  • Computerized mandrel-bent tubing
  • Double-welded flex pipe
  • Includes bolts, gaskets, hardware
  • 10–20 hp performance gain
  • Aggressive deep exhaust tone

Pros

  • +Durable T-304 stainless steel build
  • +Noticeable horsepower and torque gains
  • +Improved exhaust sound and flow
!

Cons

  • No installation instructions included
  • Not emissions-compliant for all models

About labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE

What is labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE?

The labwork Stainless X/Y-pipe Downpipe Exhaust is a direct-fit performance upgrade engineered for 2003–2007 Nissan 350Z Z33 and select Infiniti G35 V35 models equipped with the VQ35DE engine. Constructed from high-quality T-304 stainless steel, this Y-pipe replaces the factory downpipe to reduce exhaust backpressure, enhance engine efficiency, and unlock additional power. With computerized mandrel bending and double-welded flex pipe insertion, it ensures durability under high-heat and high-stress conditions. This exhaust component is designed for enthusiasts seeking improved throttle response, increased horsepower—reported gains of 10 to 20 hp—and a more aggressive exhaust note without sacrificing reliability.

Key features

  • Material — Made from T-304 stainless steel for corrosion resistance and long-term durability.
  • Pipe Design — Features a 2.5-inch inlet and 3.0-inch outlet for optimized exhaust flow.
  • Mandrel Bending — Computer-controlled mandrel bends maintain consistent diameter for unrestricted gas flow.
  • Flex Pipe — Double-welded flex section reduces stress and prevents cracking from engine movement.
  • Complete Kit — Includes all necessary hardware, bolts, and gaskets for installation.
  • Performance Gains — Promotes 10–20 horsepower increase by reducing backpressure.
  • Sound Profile — Delivers a deep, aggressive exhaust tone while maintaining smooth flow.

Who is labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE for?

This exhaust is ideal for Nissan 350Z and Infiniti G35 owners focused on performance tuning, particularly those with modified intakes, ECU tunes, or cat-back systems. It suits DIY mechanics with intermediate to advanced skills, though professional installation is recommended due to exhaust system complexity. Enthusiasts seeking improved engine sound, responsiveness, and measurable power gains will benefit most. It is not intended for daily-driven vehicles requiring strict emissions compliance.

How does labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE compare?

Compared to stock or mild aftermarket downpipes, this labwork unit offers superior flow with its 3.0-inch outlet and mandrel-bent design. It outperforms standard polypropylene or aluminized steel exhausts in heat resistance and longevity. While some high-end systems use catted headers for emissions compliance, this unit prioritizes performance and sound, making it better suited for off-road or track-focused builds than street-legal daily drivers in regulated states.

🎯

Best use cases

  • Performance upgrade for 350Z VQ35DE
  • Track or off-road vehicle builds
  • Sound enhancement for G35 V35
  • Mid-level engine tuning support
🛒

Is labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE right for you?

This downpipe is best for intermediate to advanced DIYers or professionals upgrading a 350Z or G35 with a VQ35DE engine. It suits performance builds where emissions compliance isn't required. If you're running a stock tune or need street legality, consider catted alternatives. Always verify fitment as some model years are excluded.

How it compares: Compared to stock or aluminized steel downpipes, this stainless unit offers better flow, durability, and sound. It outperforms basic replacements but lacks catalytic converters found in street-legal performance options.

More from Lab Work Auto

?

Frequently Asked Questions

What vehicles fit the labwork X/Y-pipe exhaust?

It fits 2003–2007 Nissan 350Z Z33 and select Infiniti G35 V35 models with the VQ35DE engine. Excludes certain 2003–2006 G35 and 350Z trims. Always verify your model before purchase.

Does this downpipe increase horsepower?

Yes, it can increase horsepower by 10 to 20 hp by reducing exhaust backpressure and improving airflow, especially when paired with other performance upgrades like intake and tuning.

How difficult is installation?

Installation requires intermediate to advanced mechanical skills. No instructions are included, and professional help is recommended due to exhaust system complexity and alignment needs.

Is this downpipe emissions legal?

It is not emissions-compliant in all states. Designed for off-road or race use. Check local regulations before installing on street-driven vehicles.

Can I use this with a cat-back exhaust?

Yes, this downpipe pairs well with cat-back systems to maximize exhaust flow, performance gains, and sound, especially in tuned or modified VQ35DE engine setups.

How much does labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE cost?

labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE is $114.15 at Lab Work Auto. Prices may change — click through to Lab Work Auto for the latest.

Is labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE in stock at Lab Work Auto?

Yes, labwork Stainless X/Y-pipe Downpipe Exhaust For 03-07 350Z Z33/G35 V35 VQ35DE is currently in stock at Lab Work Auto.

Specifications

SKU
F8-013996
Last updated May 14, 2026