Description
Fitment:
- 2003–2006 Infiniti G35 Sedan 3.5L V6 (VQ35DE)
- 2003–2006 Infiniti G35 Coupe 3.5L V6 (VQ35DE)
Note: Also fits Nissan 350Z, See full compatibility here
Specifications:
Brand Name: FLASHARK
Certificate: ISO9001:2000
Application: Automobile Exhaust Header
Material: Stainless Steel
Surface: Mirror Polish
Model: EH28975
Primary Runner: 1.75"
Collector: 2.1"
Inlet: 1.4*35.56mm
Outlet: 2.4*60.96mm
Delivery Time: 3-5 business days.
Warranty: 270 days
Exhaust Header VS Manifold, which is the better choice?
The structural differences between exhaust headers and manifolds are the material and size. From the material, exhaust headers are made of lighter, thinner steel, while exhaust manifolds are made of thick iron. Exhaust headers are also longer than exhaust manifolds. When in use, exhaust manifolds create back pressure, which lowers performance. Because each cylinder of the engine is given its own tube, however, headers eliminate this problem; thus, allowing the gases to exit without the creation of back pressure. Therefore, exhaust headers are a BETTER choice than an exhaust manifold.
Replacing or upgrading your exhaust header is necessary for both engine performance and sound. Whether on or off the track, exhaust headers provide more horsepower and improved exhaust sound. FLASHARK offers many products to help you create your own custom engine headers. It's really easy and convenient to use: direct bolt-on, no modification needed.
Often, after purchasing the Exhaust Header for 2003-2007 Nissan 350Z/G35/Z33 V6 3.5L VQ35DE, customers will also purchase other items. Come on, check out Flashark's all-in-one kits and modify your car to your heart's content!
FAQ
Q1: Will this exhaust header for 2003-2007 nissan 350z/g35 fit my exact vehicle?
A1: Yes! These premium Flashark headers are specifically engineered for the 3.5L V6 VQ35DE engine platform. They offer a flawless direct-fitment upgrade for both the 2003-2006 Infiniti G35 Coupe and Sedan models, as well as the 2003-2006 Nissan 350Z (Z33). Please note that this version is tailored specifically for the single-throttle-body VQ35DE engine and will not fit the later dual-intake VQ35HR engines.
Q2: Why should I choose aftermarket g35 headers over my stock g35 exhaust manifold?
A2: The factory cast-iron g35 exhaust manifold is heavy, bulky, and highly restrictive, creating significant backpressure that chokes your V6 engine's power output. Flashark's stainless steel performance headers are significantly lighter and feature individual mandrel-bent primary tubes for each cylinder. This eliminates restrictive bottlenecks, optimizes exhaust gas velocity, and maximizes scavenging efficiency to unleash hidden horsepower and a raw racing tone.
Q3: What makes Flashark headers the ideal option for a 2003 nissan 350z headers or 2004 g35 headers upgrade?
A3: If you are searching for an uncompromised performance upgrade for your 2003 nissan 350z headers or 2004 g35 headers, Flashark offers the perfect blend of structural integrity and value. Our headers are crafted from high-grade, mirror-polished stainless steel and manufactured under strict ISO9001:2000 quality standards. They feature precisely sized 1.75-inch primary runners designed to let the VQ35DE motor breathe freely, heavily outperforming generic alternatives.
Q4: Do you offer a complete setup like a 350z full exhaust system or bundled upgrade kits for the Infiniti G35?
A4: Yes, we do! To help you achieve maximum power gains and save money, Flashark provides modular combo options directly on this product page. You can customize your order by choosing between the standalone Exhaust Header kit, the Exhaust Header + Catback Exhaust bundle, or the ultimate high-performance Exhaust Header + Catback Exhaust + Downpipe all-in-one package. Upgrading to a comprehensive 350z full exhaust system or G35 bundle ensures completely balanced, high-flow exhaust architecture from the engine block all the way to the exhaust tips.
Q5: What are the exact technical specifications of these headers infiniti g35?
A5: Meticulously engineered for peak flow dynamics, these headers infiniti g35 feature a 1.75-inch (45mm) primary runner diameter and a smooth 2.1-inch collector. The precision-machined inlet measures 1.4" x 35.56mm, while the high-flow outlet measures 2.4" x 60.96mm. The entire assembly is fully TIG-welded and mirror-polished to prevent cracking and warping under extreme thermal stress.
Q6: Will these g35 coupe headers require any cutting, welding, or major modifications during installation?
A6: These g35 coupe headers are designed as a direct bolt-on replacement for your factory exhaust manifolds, utilizing original mounting configurations. However, because the VQ35DE engine bay layout is notoriously compact, extracting the factory manifolds and installing headers requires precision maneuvering around steering shafts and heat shields. While no structural welding or cutting is required, professional installation by an experienced automotive technician is strongly recommended.
Q7: What kind of horsepower and torque gains can I expect after installing these infiniti g35 headers?
A7: By removing the severe flow restrictions of the stock cast manifolds, these infiniti g35 headers significantly optimize exhaust scavenging. On a typical 3.5L V6 VQ35DE setup, drivers can expect a solid performance boost of approximately 10 to 18 horsepower along with sharper mid-to-high RPM throttle response. When paired with high-flow downpipes, a catback system, and a custom ECU tune, even greater performance gains can be unlocked.
Q8: Are all necessary installation accessories included with this g35 headers kit?
A8: Yes, Flashark ensures that you have everything needed for a successful install right out of the box. The g35 headers kit comes complete with heavy-duty replacement gaskets and the necessary mounting hardware required to achieve a secure, flush, and leak-free seal against the engine block. We always recommend using fresh gaskets during installation to eliminate any risks of post-install exhaust leaks.
Q9: How will switching from the factory manifold to these headers alter my vehicle's exhaust note?
A9: Upgrading to Flashark performance headers completely transforms the auditory character of your 3.5L V6 engine. It replaces the muffled tone of the stock manifold with a crisp, deep, and beautifully resonant growl that accentuates the iconic VQ engine platform sound. If you select our comprehensive header, downpipe, and catback bundle, your vehicle will deliver an aggressive, track-ready racing roar under open throttle while maintaining a refined growl at idle.
Q10: What kind of warranty and delivery window does Flashark provide for this product?
A10: We stand firmly behind our manufacturing quality and engineering. This exhaust header is backed by a 270-day worry-free warranty covering material and workmanship defects. Additionally, we provide rapid shipping across our distribution network, ensuring that your order arrives safely at your doorstep within 3-5 business days so you can get your build onto the lift as soon as possible.
Q11: How do Flashark performance headers compare to alternative market brands like a spelab exhaust header for 2003-2007 nissan 350z/g35?
A11: While you may come across other options like a spelab exhaust header for 2003-2007 nissan 350z/g35, Flashark headers distinguish themselves through certified ISO9001:2000 manufacturing precision, extra-thick anti-warping flanges, and premium TIG welds built to withstand both daily street driving and rigorous track abuse. Furthermore, Flashark offers fully matching modular exhaust upgrades (downpipes and catbacks) on the exact same page, ensuring perfect fitment and seamless system tuning that single-item alternative brands cannot match.
Q12: Are these headers compatible with standard aftermarket downpipes and test pipes?
A12: Yes, the 2.1-inch collector and standard outlet size flange on these VQ35DE headers are engineered to seamlessly bolt onto factory catalytic converters as well as standard aftermarket Y-pipes, downpipes, and test pipes. For maximum performance gains and a perfect structural match, we highly recommend combining them with our Flashark high-flow downpipes and catback exhaust systems available in our bundled savings options.