1999-2013 GM LS Truck T4 Hot Parts Turbo Kit

• Cast iron exhaust manifolds deliver durable, dependable sealing under boost

• V-band connections on both sides eliminate a stock-style driver-side gasket

• Fits 1999-2013 GM LS trucks/SUVs (4.8L, 5.3L, 6.0L) & swap builds

• Compact 25.5" flange-to-flange width suits stock installs or LS swaps

This hot-side turbo kit is built for 1999-2013 GM LS-powered trucks and SUVs running 4.8L, 5.3L, or 6.0L Vortec engines. Cast iron exhaust manifolds provide dependable sealing and durability under sustained heat and boost, with V-band connections on both the passenger and driver side — the driver-side V-band eliminates the need for a stock-style gasket at that connection point.

A 2.5" two-piece stainless steel crossover pipe simplifies installation and includes a V-band flange sized for most 44mm V-band wastegates, with a flex joint built to reduce vibration-related cracks and leaks. The included 3" downpipe connects to the turbo via V-band and is designed for flexible routing — tie it into an existing exhaust system, or use the included turndown for off-road setups.

At approximately 25.5" flange-to-flange across the manifolds (without clamps), this kit's compact width suits both stock truck/SUV installs and LS swap builds. This is a hot-side kit only — turbo, wastegate, cold-side intake tubing, and intercooler are sold separately unless bundled. Confirm California emissions compliance before purchase if applicable in your state.

Applications
Fits 1999-2013 GM trucks and SUVs with LS-based engines: 4.8L, 5.3L, and 6.0L Vortec. Suited to both stock-configuration truck/SUV builds and LS swap projects, given the kit's compact flange-to-flange width.

Installation
Manifolds use V-band connections on both sides, removing the need for a stock-style gasket on the driver side. The 2-piece crossover design and flex joint are built to simplify install and reduce vibration-related cracking. The downpipe's V-band connection at the turbo supports flexible routing into an existing exhaust or the included off-road turndown.

What engines does this turbo kit fit?
This kit is designed for compatible 1999–2013 GM LS-based Vortec truck and SUV engines, including 4.8L, 5.3L, and 6.0L applications.

Does this kit include the turbo itself?
No. This is a hot-side piping kit only. It includes the exhaust manifolds, crossover pipe, and downpipe. The turbocharger, wastegate, cold-side piping, and intercooler are not included unless otherwise specified.

What size turbo flange does this kit use?
The kit uses a 4-bolt T4 turbo flange with an approximately 3.00" (76mm) inside diameter.

What size wastegate does this kit work with?
The crossover pipe uses a 44mm V-band wastegate flange designed for compatible 44mm V-band external wastegates.

Is this kit suitable for an LS swap into a non-truck chassis?
Potentially. The manifolds measure approximately 25.5" flange-to-flange, making the hot-side assembly relatively compact. However, LS swap fitment depends heavily on chassis, engine position, steering, suspension, accessories, and available turbo/downpipe clearance. Verify dimensions before ordering.

Do I need a gasket on the driver-side manifold connection?
No. The driver-side manifold connection uses a V-band connection rather than a conventional stock-style flange gasket.

What's the downpipe diameter, and can it route to my existing exhaust?
The downpipe is 3" in diameter and uses a V-band connection at the turbo. Final connection to an existing exhaust system may require application-specific fabrication or modification. An off-road turndown is also included.

Is this kit legal for street use in California?
Do not assume this kit is California street legal. Turbo system modifications can affect emissions compliance, and legality depends on the complete vehicle and emissions configuration. Verify applicable CARB requirements and any required Executive Order (EO) exemption before street use.