Introducing our high-performance Exhaust Manifold Header designed specifically for the VQ35DE V6 engine found in the Nissan Altima 3.5L model. Unleash the true potential of your vehicle with this precision-engineered aftermarket upgrade. Key Features: Enhanced Performance: The exhaust manifold header is engineered to optimize exhaust gas flow, reducing backpressure and improving engine breathing. This leads to increased horsepower and torque, resulting in a noticeable improvement in overall vehicle performance. Durable Construction: Crafted from high-quality stainless steel or durable cast iron, our header ensures longevity and reliability, withstanding the harsh conditions of engine heat, vibration, and road debris. Mandrel-Bent Tubing: The mandrel-bent tubing ensures a smooth and consistent flow path for the exhaust gases, maximizing exhaust gas velocity and minimizing restrictions. Precise Fitment: Designed as a direct bolt-on replacement for the factory manifold, the header guarantees a hassle-free installation process, preserving the integrity of your vehicle's exhaust system. O2 Sensor Ports: This header is equipped with proper O2 sensor ports to accommodate the original oxygen sensors, ensuring compatibility with your Altima's engine management system. Engineered for Sound Enhancement: While performance is the primary focus, our exhaust manifold header is designed to offer a subtle yet sporty exhaust note, providing an enjoyable driving experience.