Exhaust Headers for Nissan Pathfinder (1998-2000) 3.3L

High-Flow T-304 Stainless Exhaust Headers for 1998-2000 Nissan Pathfinder

Replaces the restrictive factory cast-iron exhaust manifolds with tubular stainless steel headers to improve scavenging and lower backpressure on the VG33E engine.

The Stock Pathfinder Manifold Bottleneck

The OEM exhaust manifolds on the R50 chassis are constructed from heavy cast iron, a material notorious for severe heat retention and structural cracking under prolonged thermal stress. The factory log-style design forces exhaust pulses from the 3.3L engine to collide, creating massive turbulence and excessive backpressure. This bottleneck suffocates the VG33E V6, limiting volumetric efficiency and robbing the vehicle of low-end grunt and mid-range torque. Furthermore, years of aggressive heat cycling frequently lead to warped mating surfaces, blown gaskets, and frustrating exhaust leaks that degrade overall performance and fuel economy.

The Engineering Solution

Upgrading to these tubular exhaust headers immediately resolves the OEM airflow limitations. Engineered with 1.50-inch primary inlets that merge smoothly into a 2-inch collector outlet, this system optimizes exhaust gas velocity and promotes active cylinder scavenging. Manufactured from premium T-304 stainless steel, these headers offer exceptional corrosion resistance and handle thermal expansion significantly better than standard cast iron, effectively mitigating the factory cracking issue. The smoother, unrestricted exhaust flow directly translates to reduced engine pumping losses, lowered engine bay temperatures, and a noticeable improvement in throttle response and useable torque. Complete with required hardware and gaskets, this upgrade bolsters both the driver and passenger side exhaust banks.

Technical Specifications

Compatibility

• 1998 Nissan Pathfinder 3.3L V6 (Base, XE, SE, LE)
• 1999 Nissan Pathfinder 3.3L V6 (Base, XE, SE, LE)
• 2000 Nissan Pathfinder 3.3L V6 (Base, XE, SE, LE)

The Nissan Off-Road Standard

The R50 Pathfinder is built for rugged utility, but it demands durable components capable of handling heavy loads and off-road abuse. Upgrading to T-304 stainless headers ensures reliable thermal management and consistent torque delivery when navigating trails, towing, or hauling gear over steep gradients.