Exhaust Manifold for Ford Explorer (1997-2010) 4.0L

High-Flow Stainless Exhaust Headers for 1997-2001 Ford Explorer (Cologne V6 / UN105)

Direct-fit performance exhaust headers designed to replace restrictive cast-iron factory manifolds, reducing exhaust backpressure and lowering engine bay temperatures.

The Stock Explorer Exhaust Bottleneck

The OEM cast-iron exhaust manifolds on the 4.0L SOHC Cologne V6 are notoriously prone to cracking under thermal stress and severely restricting exhaust gas velocity. Ford's factory casting relies on short, narrow runners that create significant turbulence and backpressure just inches from the exhaust ports. Over time, constant heat cycling leads to structural fatigue, resulting in audible exhaust leaks, compromised oxygen sensor readings, and reduced overall engine efficiency. Furthermore, the inherent surface roughness of the cast iron disrupts fluid airflow dynamics, robbing the UN105 chassis of potential low-end torque essential for towing payloads or navigating off-road terrain.

The Engineering Solution

These upgraded tubular headers eliminate factory flow restrictions using mandrel-bent stainless steel construction. Featuring a precision-engineered 1.50-inch primary inlet stepping up to a 2.0-inch outlet, the design significantly accelerates exhaust scavenging and reduces cylinder heat soak. The heavy-duty flanges are CNC-machined to ensure a warp-free seal against the cylinder head, while the TIG and MIG welded joints provide superior resistance to heat-induced cracking compared to OEM cast manifolds. By streamlining exhaust pulses, these headers yield a verified 5-10 horsepower and torque gain. They come equipped with dual EGR port locations to maintain emission system compatibility and include high-quality replacement gaskets and hardware for a complete, leak-free repair.

Technical Specifications

Compatibility

• 1997 Ford Explorer 4.0L SOHC V6
• 1998 Ford Explorer 4.0L SOHC V6
• 1999 Ford Explorer 4.0L SOHC V6
• 2000 Ford Explorer 4.0L SOHC V6
• 2001 Ford Explorer 4.0L SOHC V6
• 2002 Ford Explorer 4.0L SOHC V6
• 2003 Ford Explorer 4.0L SOHC V6
• 2004 Ford Explorer 4.0L SOHC V6
• 2005 Ford Explorer 4.0L SOHC V6
• 2006 Ford Explorer 4.0L SOHC V6
• 2007 Ford Explorer 4.0L SOHC V6
• 2008 Ford Explorer 4.0L SOHC V6
• 2009 Ford Explorer 4.0L SOHC V6
• 2010 Ford Explorer 4.0L SOHC V6

The Ford SUV Standard

Built to endure the rigorous demands of the Explorer platform, these stainless headers restore reliable towing capability and structural integrity to your exhaust system. Eliminate chronic exhaust leaks and optimize your 4.0L's thermal efficiency for dependable long-haul durability.