The factory airbox on the 2009-2015 Cadillac CTS-V was designed to keep the LSA 6.2L supercharged V8 quiet — and that's exactly the problem. A 556-horsepower super-sedan shouldn't sound like a rental car Impala. Behind the scenes, the stock intake routes air through a narrow-diameter plastic snorkel, a thick paper panel filter, and a maze of resonator chambers, all engineered to silence the supercharger whine that makes the LSA legendary. What you lose — beyond the sound — is airflow velocity at high RPM, where the supercharger is already working against heat and volumetric efficiency limits.

This cold air intake kit replaces the entire factory system with a large-diameter mandrel-bent aluminum intake tube with a polished finish and a high-flow reusable cone filter. The included heat shield positions the filter away from the hottest areas of the engine bay — directly behind the driver-side headlight — and helps draw cooler air from the factory fresh-air duct behind the grille. The kit reuses your factory MAF sensor and connects to the stock throttle body without cutting, drilling, or permanent modification.

On a stock-tune LSA, the most significant improvements are not the peak numbers — it's the supercharger whine (finally audible through the intake), sharper part-throttle response, and better airflow consistency on hot days when the factory heat-soaked airbox becomes a bottleneck. If your CTS-V already has a smaller supercharger pulley, aftermarket heat exchanger, or a tune, this intake removes the final intake-side restriction and supports the airflow your setup demands. Installation takes 60-90 minutes with basic hand tools.

Key Features

Large-Diameter Polished Aluminum Intake Tube — Mandrel-bent from lightweight aluminum with a polished finish. Smooth internal walls eliminate the turbulence and flow restriction caused by the factory plastic intake tract's resonator chambers and narrow-diameter sections. The polished finish resists corrosion and maintains a clean, OEM-plus appearance under the hood.

High-Flow Reusable Cone Filter — Large surface area conical filter, washable and reusable. Cotton gauze media provides excellent airflow while capturing fine particulates. 

Insulated Heat Shield — Positions the filter behind the driver-side headlight and draws cooler air from the factory grille duct. The shield helps isolate the filter from the radiant heat of the radiator and exhaust manifold at idle and low speeds. At highway speeds, ram air through the grille provides a meaningful drop in intake temperature. The shield does not entirely eliminate heat soak at idle — see Q7 for realistic expectations.

Unlocks the LSA Supercharger Sound — The single biggest reason CTS-V owners buy this intake. The factory airbox silences the Eaton supercharger whine almost entirely. With this open-element intake, the blower becomes clearly audible — a distinctive mechanical whine that rises with RPM under load. It's loud enough to enjoy with the windows down, quiet enough to be civil at cruise.

Direct Fit — No Permanent Mods — Designed to mount using existing factory bolt holes. The MAF flange maintains the factory sensor position and diameter to preserve accurate airflow readings. Returns to stock in under an hour if needed.

Specifications

Brand: Flashark
SKU: FLIS25001
Material: Aluminum piping
Tubing Finish: Black powder-coated
Tube Outer Diameter: 4.0" (102mm)sizing
Filter Type: Cotton gauze
Filter Color: Red
Heat Shield Material: Aluminum
Coupler Material: Reinforced silicone (black)
Clamp Type: Stainless steel worm-drive
Intake Routing: Short ram with heat shield (driver-side)
Fits: 2009-2015 Cadillac CTS-V 6.2L LSA Supercharged V8 (Sedan / Coupe / Wagon)
Installation Time: 60–90 minutes

Package Includes

1 × Aluminum intake tube
1 × High-flow red cotton gauze cone filter
1 × Insulated heat shield assembly
2 × Reinforced silicone couplers (black)
4 × Stainless steel worm-drive clamps
1 × MAF sensor mounting flange
1 × Breather hose adapter and line
1 × Vehicle-specific mounting bracket with hardware