LS Swap Long Tube Headers for 1979-2004 Ford Mustang Fox Body & SN95 | 1-7/8” Primaries | 3” Collector | 304 Stainless Steel

High-performance stainless steel long tube headers designed for LS engine swaps in Fox Body and SN95 Mustangs. CNC flanges and mandrel bent tubing improve exhaust flow and scavenging, supporting horsepower gains in naturally aspirated or boosted LS builds. Compatible with aftermarket swap components like tubular K-members and aftermarket steering shafts. Key Features 1 7/8” mandrel bent primaries 3” collector outlet Polished 304 stainless steel CNC machined header flanges Includes graphite gaskets Designed for LS engine swaps only Engine & Vehicle Compatibility GM LS engines: 4.8L, 5.3L, 5.7L LS1, 6.0L LS2/LQ4/LQ9, 6.2L LS3/L92 Vehicles: 1979–1993 Fox Body, 1994–2004 SN95 / New Edge Not compatible with stock Ford engines. Fitment Notes Best installed with tubular K-member, LS swap mounts, and aftermarket steering shafts Clearance depends on your engine placement, K-member, and steering components Minor adjustments may be needed; professional installation recommended LS Swap Builder Guide: Swapping a GM LS engine into a Fox Body Mustang is one of the most popular performance upgrades in the Mustang community. However, header fitment can vary depending on the swap components used in your build. This guide outlines common setup considerations to help builders achieve the best results. K-Member Compatibility Most LS swap builds require a tubular aftermarket K-member to position the engine correctly within the Mustang chassis. Many builders use components such as an AJE tubular K-member or similar aftermarket swap systems. Tubular K-members provide additional clearance around the engine and exhaust area, making it easier to route long tube headers. Using the factory Mustang K-member may create clearance limitations and may require additional modification. Steering Shaft Clearance Fox Body LS swaps often require an aftermarket steering shaft to create sufficient clearance between the steering linkage and the header tubes. Many builders use steering shafts from companies such as Flaming River or similar aftermarket manufacturers. Depending on the exact engine position and swap components used, clearance adjustments may be required. Engine Mount Position LS swap motor mounts determine the final engine placement within the chassis. Engine position can influence header clearance with the firewall, steering shaft, and K-member. Using swap mounts designed specifically for Fox Body LS conversions typically produces the best fitment results. Exhaust System Integration These headers use a 3-inch collector outlet which is compatible with many custom exhaust systems used in LS swap builds. Builders commonly connect the collectors to: Custom dual exhaust systems X-pipe or H-pipe systems Turbo or forced induction setups Because every LS swap build is slightly different, exhaust routing after the collectors will typically be fabricated to suit the specific vehicle. Important Fitment Note LS swap builds vary significantly depending on engine placement, K-member design, steering shaft configuration, and transmission choice. While these headers are commonly used in Fox Body LS conversions, fitment can vary based on the components used in each build. Professional installation and proper swap planning are recommended. Common LS Swap Questions Will these headers fit with a stock Mustang engine? No. These headers are designed specifically for LS engine swap projects. Will these headers fit with the factory K-member? Most LS swaps use a tubular aftermarket K-member for proper engine placement and header clearance. Do these headers clear the steering shaft? Clearance depends on the steering shaft and motor mounts used in your build. Many builders install an aftermarket steering shaft to ensure proper clearance. Do these headers work for turbo builds? Yes. Long tube headers are commonly used in turbo LS swap setups where the collectors are used as the starting point for custom turbo piping.

• Designed for LS Engine Swap Mustang Builds – Long tube headers engineered specifically for GM LS engine swaps in 1979–2004 Ford Mustang Fox Body and SN95 platforms. Compatible with popular LS engines including 4.8L, 5.3L, 5.7L LS1, 6.0L LS2/LQ4/LQ9, and 6.2L LS3/L92. Not designed for factory Ford engines.
• Performance Long Tube Header Design – The long tube configuration improves exhaust scavenging, helping LS engines evacuate exhaust gases more efficiently. This design supports better engine breathing, improved airflow, and potential horsepower gains for naturally aspirated or boosted LS swap builds.
• 1-7/8” Mandrel Bent Primary Tubes – Features 1-7/8 inch mandrel-bent stainless steel primary tubes designed to maintain smooth internal airflow through each bend. This size is commonly used for high-performance LS builds, cammed engines, turbo setups, and high horsepower applications.
• Durable 304 Stainless Steel Construction – Built from polished 304 stainless steel with CNC-machined header flanges for strength and corrosion resistance. Includes merge collectors and standard graphite header gaskets for reliable sealing and long-term durability in high-temperature performance environments.
• 3” Collector Outlet for Custom Exhaust Systems – Equipped with 3-inch collectors that easily integrate with many custom exhaust systems, X-pipes, H-pipes, dual exhaust setups, or turbo piping commonly used in LS swap Mustang builds.