Certified Automotive Experts Stainless Steel Shorty Headers for LS Swaps — Gen III/IV Fitment, Includes Hardware

These stainless steel shorty headers by Certified Automotive Experts are universal exhaust manifolds engineered specifically for LS engine swap projects (Gen III/IV LS motors), offering durable construction and a complete hardware kit for straightforward installation.

Built for builders and fabricators who fit Gen 3 and Gen 4 LS engines into older trucks and custom frames, these shorty-style headers provide a compact, corrosion-resistant solution that clears frame rails and accessory layouts common in swap applications. They are not designed to bolt into vehicles that left the factory with LS-style engines — only intended for swap installs. Supplied gaskets, bolts, and screws let you finish a header install without sourcing additional fasteners.

Will these headers fit my LS swap project?

They are engineered for a wide range of swap uses and fit many classic and late-model chassis when installing 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L LS engines (Gen III and Gen IV, produced roughly 1998–2020). They are not compatible with GM’s LT-series engines introduced in 2014 and newer. Always verify clearance and steering/engine mount locations before purchase.

• Compatible engines: LS1, LS2, LS3, LS6, LS7 and other Gen III/IV variants
• Not compatible with LT-series engines (2014+)
• Intended for swap applications only — not for vehicles originally equipped with LS-style engines
• Works with common swap platforms like classic C/K trucks, Blazers, and Suburbans

How do these shorty headers simplify installation on swap vehicles?

The shorty layout reduces the amount of space required under the hood, making it easier to route exhaust past frame rails, steering components, and aftermarket accessories. The kit includes the necessary gaskets and mounting hardware so you can mount the headers immediately after test-fitting. While designed for DIY installs, some projects may still require minor trimming or bracket fabrication depending on vehicle-specific modifications.

• Shorty design for improved fitment in tight engine bays
• Includes gaskets, bolts, and screws for assembly-ready installation
• May require small clearances or bracket adjustments on heavily modified swaps

What materials and longevity can I expect from these headers?

Manufactured from stainless steel, these headers resist rust and corrosion better than mild-steel alternatives, giving longer service life in exposed underbody environments. The welded construction is intended to withstand typical swap and street driving conditions, although paint or high-temp coatings are optional for added protection and appearance. Regular inspection of fasteners and flanges helps maintain a leak-free connection over time.

• Stainless steel construction for improved corrosion resistance
• Welded collectors and flanges for durable service
• Optional coatings or high-temp paint can enhance long-term finish

Which vehicles and platforms are commonly compatible?

These headers suit many popular swap candidates and late-model body conversions where LS engines are being fitted into older frames or non-LS-equipped vehicles. They are frequently used in classic Chevy trucks, Blazers, Suburbans, and certain Silverado/Sierra conversions, among others. Confirm motor mounts, transmission clearance, and steering geometry to ensure a trouble-free fit.

• Fits: 1973–1987 square-body C10/C20/C30; 1967–1972 C10/C20; K5 Blazer; Suburban 1973–1991
• Also compatible with 1988–1999 OBS C1500, Silverado, Sierra; S10 pickups
• Designed for swaps — not for vehicles originally shipped with LS engines

Who is this for? These shorty stainless headers are aimed at professional fabricators, weekend builders, and anyone performing an LS swap into a vehicle that did not come from the factory with an LS engine. If you need a compact, corrosion-resistant header that includes hardware and fits a broad range of Gen III/IV LS engines, this set offers a practical, install-ready option. If your vehicle originally shipped with an LS-style motor or you’re running an LT-series engine, look for a product specifically designed for those factory platforms instead.