2002-2006 Nissan Altima 2.5L QR25DE Stainless Steel 4-1 Exhaust Header
Performance Construction
Racing Spec Header
Exhaust Outlet
2.5L I4 Engine
Nissan Altima 2.5L QR25DE Performance Exhaust Header
Upgrade the exhaust side of your 2002-2006 Nissan Altima 2.5L QR25DE with this XS-POWER T304 stainless steel 4-1 performance exhaust header. Designed specifically for compatible L31 Altima models equipped with the 2.5-liter QR25DE inline-four engine, this header combines performance-oriented exhaust flow with durable stainless steel construction.
The 4-1 racing-spec collector design routes all four primary exhaust runners into a single 2.50-inch outlet, creating a high-flow exhaust path for enthusiasts looking to upgrade the restrictive factory-style exhaust manifold configuration.
For drivers searching for a Nissan Altima 2.5 header, QR25DE exhaust header, 2002 Nissan Altima header, 2003 Altima performance header, 2004 Altima header, 2005 Altima QR25DE header or 2006 Nissan Altima 2.5 exhaust manifold upgrade, this system provides a performance-focused stainless steel solution.
Performance Features
- High-quality T304 stainless steel construction
- Performance-oriented 4-1 racing header design
- TIG-welded construction
- CNC-machined flange
- 2.00 x 1.25 inch rectangular inlet dimensions
- 2.50-inch exhaust outlet
- Designed to improve exhaust flow compared with restrictive factory-style components
- Performance upgrade for naturally aspirated QR25DE applications
- Metal gasket included
- Brand new performance exhaust component
4-1 Racing Spec Header Design
The 4-1 header configuration combines four individual exhaust runners into a single collector. This layout is designed around efficient exhaust-gas evacuation and performance-oriented exhaust flow for the Nissan QR25DE engine.
A large 2.50-inch outlet provides the transition from the header into the downstream exhaust system, making this a strong foundation for a performance exhaust setup on compatible 2.5L Altima applications.
Technical Specifications
| Specification | Details |
|---|---|
| Product Type | Performance Exhaust Header / Extractor |
| Material | T304 Stainless Steel |
| Header Design | 4-1 Racing Spec |
| Inlet | 2.00 x 1.25 Inch Rectangular |
| Outlet | 2.50 Inches |
| Welding | TIG Welded |
| Flange | CNC Machined |
| Engine | 2.5L I4 QR25DE |
| Chassis | Nissan Altima L31 |
| Condition | New |
Vehicle Fitment
Fits 2002-2006 Nissan Altima 2.5L
- 2002 Nissan Altima 2.5L QR25DE
- 2003 Nissan Altima 2.5L QR25DE
- 2004 Nissan Altima 2.5L QR25DE
- 2005 Nissan Altima 2.5L QR25DE
- 2006 Nissan Altima 2.5L QR25DE
Compatible with applicable Base, S and SL models equipped with the 2.5L I4 QR25DE engine.
DOES NOT FIT 3.5L V6 MODELS. This header is designed for the Nissan Altima equipped with the 2.5L QR25DE four-cylinder engine only. It is not designed for 3.5L V6 SE or SE-R applications.
QR25DE Exhaust Performance Upgrade
The exhaust manifold is one of the first components exhaust gases encounter after leaving the cylinder head. A performance header uses individual runners and a collector arrangement designed to provide a more performance-oriented exhaust path.
This XS-POWER header combines T304 stainless steel construction, a 4-1 runner layout and a 2.50-inch outlet for Nissan Altima owners building a naturally aspirated QR25DE street or performance exhaust system.
Actual power results can vary depending on the vehicle, engine condition, exhaust system, intake configuration, ECU calibration and other supporting modifications.
Package Contents
- 1 x Stainless Steel 4-1 Performance Exhaust Header Assembly
- Metal Exhaust Gasket
- Additional hardware / bolts as shown with the product
Professional Installation Recommended
Installation instructions are not included. Professional installation is strongly recommended.
Before installation, verify vehicle year, trim, engine code, exhaust configuration and product dimensions. Exhaust systems can vary due to previous repairs, modifications or aftermarket components.
Nissan Performance Exhaust Parts - Worldwide Shipping
SSAUTOCHROME.COM supplies performance exhaust, turbo and engine components worldwide. Nissan enthusiasts, performance shops and project-car builders can order XS-POWER performance parts for street, racing and custom applications.
If you are searching for a 2002-2006 Nissan Altima header, Nissan Altima 2.5 performance header, QR25DE exhaust header, L31 Altima exhaust manifold, Nissan QR25DE header, Altima 2.5 stainless header, 4-1 Nissan header or 2.5L Altima performance exhaust, this XS-POWER system is designed specifically around the QR25DE-powered L31 Altima platform.
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