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Flashark Y-Pipe Exhaust for 2003–2009 Nissan 350Z & 2003–2008 Infiniti G35 3.5L V6
1 Item
$128.00
Product Details
Fitment
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Upgrade Your VQ35 Exhaust Flow with a Direct-Fit Y-Pipe
The Flashark Y-Pipe is designed for 2003–2009 Nissan 350Z and 2003–2007 Infiniti G35 3.5L V6 applications. It replaces the restrictive factory merge section with a smoother dual-inlet-to-single-outlet exhaust path, resulting in a deeper VQ tone and a more responsive feel.
Choose the Y-Pipe on its own for a straightforward exhaust upgrade, or select a compatible package to pair it with test pipes, headers, or a cat-back system. Each option is designed for a different stage of your build—please confirm the selected package matches your vehicle before ordering.
WHY CHOOSE THE FLASHARK Y-PIPE?
- 2.5-Inch Dual Inlets to 3-Inch Outlet: Smooth transition from the dual-bank exhaust path into a single merged outlet.
- Stainless-Steel Construction: Built for heat resistance and long-term corrosion resistance.
- Mandrel-Bent Tubing: Helps maintain a consistent internal diameter through each bend.
- TIG-Welded Joints: Strong weld construction for repeated heat cycles.
- CNC-Machined Flanges: Designed for precise connection points and reliable sealing with the included hardware.
OFF-ROAD USE ONLY
This product removes or bypasses factory emissions equipment (catalytic converters). It is legal only for off-road, competition, or track use. Installing this product on a vehicle registered for public road use violates the Clean Air Act (42 U.S.C. § 7401) and may result in fines, failed emissions testing, or registration denial. Check your state and local laws before purchasing. By ordering, you accept full responsibility for compliance.
Specifications
Brand: Flashark
SKU: FLES08311
Application: Y-Pipe Downpipe Exhaust / Test Pipes (Catless)
Material: Stainless steel
Finish: Mirror-polished
Inlet Diameter: 2.5" (dual-bank entry)
Outlet Diameter: 3.0" (single merge exit)
Construction: Mandrel-bent tubing, TIG-welded joints, CNC-machined flanges
Flanges: CNC-machined and chrome-plated — strength, sealing, and corrosion resistance
Catalytic Converter: None
Estimated Power Gain: 8-12 HP with ECU tune; 5-8 ft-lbs of torque with ECU tune
Emissions Compliance: Not compliant — for off-road/competition use only
Warranty: 1-year
Built for Better Flow and a Stronger VQ Sound
The factory exhaust path on the 350Z and G35 can feel restrictive once you start upgrading the rest of the car. This Flashark Y Pipe Downpipe Exhaust/Test Pipes kit helps exhaust gases flow more smoothly through the front and mid-section of the exhaust, reducing restriction and giving the car a more open tone.
Instead of making unrealistic power claims, this part should be viewed as one piece of a complete exhaust setup. Paired with a compatible catback, headers, intake, or tune, it can help the VQ35 feel more responsive and sound more alive without making the build overly complicated.
Stock Downpipe vs Flashark Y-Pipe Downpipe
The stock exhaust section on a 350Z or G35 is built for quiet daily use, factory comfort, and broad drivability. That works well for an untouched car, but it can feel restrictive when you want a stronger sound and better exhaust response from the VQ35.
The Flashark Y Pipe Downpipe Exhaust/Test Pipes kit uses larger free-flow tubing, stainless steel construction, and a smoother exhaust path to help reduce restriction. The result is a deeper tone, cleaner exhaust flow, and estimated gains of 10-15 HP and 5-10 ft-lbs of torque, provided the rest of the setup supports it.
Built for the VQ35 Exhaust Layout
This Flashark Y Pipe Downpipe Exhaust/Test Pipes kit is made for the naturally aspirated VQ35 exhaust layout found on the 350Z and G35. It helps reduce restriction through the front and mid-exhaust area, giving the car a deeper tone, cleaner flow, and a sharper feel when you get back on the throttle.
For owners comparing a 350Z downpipe, 350Z Y-pipe, or 350Z test pipes upgrade, the main goal is simple: better exhaust movement, a stronger sound, and a more connected driving feel when the rest of the setup is properly matched.
Package Includes
1 × Y-Pipe Downpipe
3 × Flange Gaskets
6 × Hex Head Bolts
6 × Flange Nuts
Inspect all gasket surfaces and verify hardware matches your current exhaust connection points before installation.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
Recommended Exhaust Pairings
Many 350Z and G35 owners upgrade the exhaust in stages, so keeping the current recommended upgrade module is useful for both fitment comparison and conversion. This kit can be paired with a compatible 350Z catback exhaust for a fuller rear-section upgrade, or matched with VQ35DE exhaust headers on compatible 2003-2007 builds.
Confirmed compatible — Y-Pipe Exhaust option:
| Year | Make | Model | Engine |
|---|---|---|---|
| 2003–2009 | Nissan | 350Z | 3.5L V6 |
| 2003–2008 | Infiniti | G35 | 3.5L V6 |
Fitment Notes:
- This table applies to the Y-Pipe Exhaust option.
- The Test Pipe + Y-Pipe and header bundle options may have different year limitations. Confirm the selected variant before purchase.
- Does NOT fit Nissan 370Z, Infiniti G37, or vehicles with engines other than the 3.5L V6.
- Please compare your factory exhaust connection points before installation.
Q: What vehicles does the Y-pipe fit?
A: The Y-Pipe Exhaust fits 2003–2009 Nissan 350Z and 2003–2008 Infiniti G35 models equipped with the 3.5L V6. It does NOT fit the Nissan 370Z, Infiniti G37, or vehicles with a different engine and exhaust layout.
Q: Does the Y-pipe replace the catalytic converters?
A: No. The standard Y-Pipe Exhaust option replaces the factory Y-pipe section and does not replace the factory catalytic converters. Only bundle options specifically labeled Test Pipe + Y-Pipe include catless test pipes.
Q: Will this Y-pipe cause a check engine light?
A: The Y-pipe-only option does not remove the factory catalytic converters, so it is not expected to create a catalyst-efficiency code by itself. Catless test-pipe package options may trigger a check engine light because they remove the factory catalytic converters.
Q: What is included with the Y-pipe exhaust?
A: The Y-pipe option includes one stainless-steel Y-pipe, three flange gaskets, six hex head bolts, and six flange nuts. Inspect all connection points and compare the included hardware with your vehicle before installation.
Q: Will this make my 350Z or G35 louder?
A: Yes. A freer-flowing Y-pipe can create a deeper and more pronounced VQ exhaust tone, especially when paired with headers or a cat-back exhaust. Final sound level and cabin drone depend on the rest of your exhaust setup.
Q: Can I install the Y-pipe with my stock exhaust?
A: Yes. The Y-pipe is designed as a direct-fit replacement for compatible 350Z and G35 3.5L V6 applications and can be installed with a compatible stock or aftermarket rear exhaust section. Verify your exhaust connection points before ordering.
Q: Are the test-pipe bundle options street legal?
A: Catless test-pipe bundles remove factory catalytic converters and are intended for off-road or competition use only where permitted. They may not be legal for street-driven vehicles and may cause an emissions-test failure. Check applicable local, state, and federal regulations before purchase.
Q: Is professional installation recommended?
A: Professional installation is recommended if you do not have exhaust-installation experience. Exhaust bolts can be corroded or seized from heat cycles, and all flanges must be sealed correctly to prevent exhaust leaks.
Fast Shipping Policy
Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date. Click for Shipping Policy
Easy Return Policy
Every order comes with a 30-day free return, provided the item is brand new, uninstalled, and in its original packaging. We cover return shipping for quality issues. Refunds are processed within 3-5 business days. Click for Return Policy
Worry-Free Delivery Protection
Add Worry-Free Delivery at checkout — if it's lost, stolen, or damaged, you're 100% covered. Click for Worry-Free Delivery Protection