Exhaust Headers For 1991-2001 Nissan 200Sx/Sentra/NX & Infiniti G20 2.0L
Specifications:
Brand Name: FLASHARK
Certificate: ISO9001:2000
Application: Automobile Exhaust Header
Material: Stainless Steel
Surface: Mirror Polish
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.
Fitment & Compatibility
| Brand | Model | Year Range | Full Compatible Specs |
|---|---|---|---|
| Nissan | 200SX | 1991-2001 | Factory-Equipped 2.0L SR20DE DOHC Inline-4 (L4) Engine |
| Nissan | Sentra | 1991-2001 | Factory-Equipped 2.0L SR20DE DOHC Inline-4 (L4) Engine |
| Nissan | NX | 1991-2001 | Factory-Equipped 2.0L SR20DE DOHC Inline-4 (L4) Engine |
| Infiniti | G20 | 1991-2001 | Factory-Equipped 2.0L SR20DE DOHC Inline-4 (L4) Engine |
Frequently Asked Questions: 1991-2001 Nissan & Infiniti 2.0L SR20DE Headers
Q1: What exact vehicles does the "flashark 1991-2001 nissan 200sx / sentra / nx infiniti g20 2.0l exhaust header" fit?
A1: This premium stainless steel exhaust header is engineered for a precise, direct fit on several 2.0L platforms. It seamlessly bolts onto the 1991-2001 Nissan Sentra (SE-R), 1995-1998 Nissan 200SX (SE-R), 1991-1993 Nissan NX (specifically the 2.0L NX2000), and the 1991-2001 Infiniti G20. It is designed exclusively for vehicles equipped with the factory 2.0L SR20DE DOHC Inline-4 engine.
Q2: Will this fit my classic Nissan 200 nx?
A2: Yes! If your Nissan 200 NX is the 2.0L variant (commonly known as the NX2000 with the SR20DE engine), this header is a perfect direct-fit upgrade. It replaces the restrictive factory exhaust manifold without requiring custom fabrication.
Q3: Can I use these for an SR20VE swap? Are they considered sr20ve headers?
A3: While the cylinder head bolt pattern is very similar between the SR20DE and the SR20VE (Neo VVL), the exhaust port shapes and sizes differ. This product is precision-machined specifically for the SR20DE port profile. Bolting these onto an SR20VE will cause a port mismatch and exhaust turbulence. For a true VVL build, we recommend sourcing dedicated SR20VE headers to maximize your flow.
Q4: How will this upgrade my Infiniti G20 exhaust system?
A4: The factory Infiniti G20 exhaust manifold is a heavy, restrictive cast-iron piece that creates severe backpressure. By upgrading to our high-flow tubular stainless steel headers, you allow each cylinder to breathe efficiently. This eliminates backpressure, frees up trapped horsepower, increases mid-range torque, and drastically improves your engine's throttle response.
Q5: I often see people referring to a "Datsun G20" in old forums. Will this part work for it?
A5: The "Datsun G20" is an enthusiast nickname paying homage to Nissan's heritage, though the vehicle was officially branded as the Infiniti G20 (P10 and P11 chassis). If you are driving a 1991-2001 Infiniti G20 with the original SR20DE engine, this header will fit perfectly and honor that legendary Datsun/Nissan engineering legacy.
Q6: Why should I buy from Flashark instead of a dedicated infiniti headers shop?
A6: Flashark bridges the gap between premium track-ready performance and enthusiast affordability. Instead of paying the massive markup at a boutique infiniti headers shop, our headers provide the same high-end features: TIG-welded joints, CNC-machined flanges, and mirror-polished stainless steel, all backed by strict ISO9001:2000 quality control standards.
Q7: What is the main advantage of these over stock cast-iron headers?
A7: Aside from a massive weight reduction, the main advantage is internal volume and flow dynamics. Factory cast-iron headers have short, cramped internal runners that cause exhaust gases from different cylinders to crash into each other. Our tubular stainless steel headers use elongated primary tubes to separate exhaust pulses, creating a "scavenging effect" that actually helps pull exhaust gases out of the engine faster.
Q8: Do I need to modify the rest of my infiniti headers and exhaust setup to install this?
A8: No major modifications are required. This is designed as a direct bolt-on replacement that mates perfectly to your factory downpipe and catalytic converter location. However, pairing this header with a high-flow aftermarket catback system will yield the best horsepower gains and sound.
Q9: Are installation gaskets and hardware included?
A9: Yes! We know there is nothing worse than having to pause a project to run to the auto parts store. We include the necessary metal gaskets and basic hardware required to mount the new header to your SR20DE cylinder head and lower exhaust connection.
Q10: Will installing this exhaust header change the sound of my car?
A10: Absolutely. Replacing a thick cast-iron manifold with thin-wall stainless steel headers significantly alters the acoustic profile of the SR20DE. You can expect a deeper, more aggressive, and raspier sport exhaust tone, especially when accelerating through the higher RPM ranges.
Q11: Will this header cause my Check Engine Light (CEL) to turn on?
A11: As long as you ensure your factory O2 sensors are functioning properly, transfer them securely to the pre-welded bungs on our header, and confirm there are no exhaust leaks at the gasket surfaces, your vehicle's ECU will read the exhaust flow normally without triggering a Check Engine Light.
Q12: How difficult is the installation for a DIY enthusiast?
A12: Installation is very straightforward for anyone with basic mechanical skills, as the SR20DE engine features a front-facing exhaust manifold with excellent access. As an experienced tuning tip: make sure to soak your factory exhaust manifold bolts in penetrating oil overnight before your install to prevent snapping any old, heat-cycled studs in your engine block!