• Cold Air Intake for Cadillac CTS (2008-2011) 3.6L V6 Engine
  • Cold Air Intake for Cadillac CTS (2008-2011) 3.6L V6 Engine
  • Cold Air Intake for Cadillac CTS (2008-2011) 3.6L V6 Engine Default Title

Cold Air Intake for Cadillac CTS (2008-2011) 3.6L Engine

$259.95
$259.95
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Sharpen Throttle Response on Your Cadillac CTS High Feature V6

Who It’s For: Designed specifically for 2008-2011 Cadillac CTS owners running the 3.6L High Feature V6 engine who want to wake up their luxury sedan’s performance and sound.

The Problem: The High Feature V6 is a sophisticated piece of engineering, but the factory airbox is choked by baffled plastic chambers and restrictive paper filters designed for silence rather than flow. This creates a sluggish off-the-line feel and hides the aggressive acoustic profile this engine is capable of producing.

The Solution: We engineered this intake system to bypass the factory restrictions of the High Feature V6, utilizing smooth-bore T304 aluminum mandrel-bent piping. By providing a more direct path for oxygen and protecting it with a dedicated heat shield, we allow the engine to pull in cooler, denser air for immediate combustion gains.

Why This is the Ultimate Upgrade

  • Optimized Power Delivery: Real-world gains of up to 10% in horsepower and torque by reducing pumping losses and improving volumetric efficiency.
  • Premium Build Quality: Features lightweight T304 aluminum piping and a black powder-coated heat shield that stands up to the high under-hood temperatures of the 3.6L engine bay.
  • True Bolt-On Simplicity: No cutting or drilling required. This kit installs in under 60 minutes using standard hand tools and fits perfectly within the stock engine bay footprint.

Technical Specifications

Fitment 2008-2011 Cadillac CTS
Engine Family High Feature V6 (LY7 / LLT)
Factory Ratings Approx. 304 HP & 273 lb-ft Torque
Part Numbers CTS-36-0811-INTK, 2008, 2009, 2010, 2011

Compatibility & OEM Reference

Fits the Following Vehicles:

  • 2008 Cadillac CTS 3.6L V6
  • 2009 Cadillac CTS 3.6L V6
  • 2010 Cadillac CTS 3.6L V6
  • 2011 Cadillac CTS 3.6L V6

Interchange Part Numbers:

3.6L, V6, 2008, 2009, 2010, 2011, T304 Aluminum, High Flow Red Filter

The Performance Promise

Buy with confidence. As tuners, we know that airflow is the foundation of performance. This kit is designed to provide a deeper, throaty engine note under heavy acceleration while maintaining factory-like civility during highway cruising. Backed by real automotive experts and fast shipping.

Engine Safety Rating
Difficulty 

Fitment

Make

Cadillac

Engine Size
  • 3.6L

Year
  • 2008
  • 2009
  • 2010
  • 2011

Installation & Tools

The Wrench Time

  • Estimated Time: 45-60 Minutes
  • Difficulty: 3/10 - A straightforward bolt-on, but requires a delicate touch with aging plastics and sensitive electronics on the LLT DI V6 engine.

Tools You Will Need

  • 10mm socket and ratchet (for battery and heat shield bolts)
  • 8mm deep socket or nut driver (for hose clamps)
  • T20 Torx bit (for the factory MAF sensor)
  • Flathead screwdriver (for prying stubborn clips)
  • Nylon panel popper (for releasing wire loom fasteners without scratching paint)
Mechanic’s Pro Tip (The "Gotcha"):
The 2008-2011 Cadillac CTS 3.6L (LLT Direct Injection engine) is notorious for having an incredibly brittle plastic PCV breather line connected to the intake tube. The community forum consensus is unanimous: if you force this line or try to yank it off without fully depressing the grey locking tab, it WILL snap, leaving you stranded with a massive vacuum leak. Additionally, the Mass Air Flow (MAF) sensor is highly sensitive to turbulence; ensure the O-ring seats perfectly to avoid a P0171 Lean Code.

Phase 1: Removing the Factory Part

  1. Disconnect the Battery: Always start by disconnecting the negative battery terminal using a 10mm wrench or socket. This prevents random check engine lights and forces the ECU to reset its fuel trims for the new airflow.
  2. Unplug the MAF Sensor: Locate the MAF sensor on the factory intake tube. Slide the red locking tab back with your thumb, then press down on the black release lever and gently pull the harness free. Set the wire aside.
  3. Disconnect the PCV Breather: Locate the hard plastic PCV tube attached to the intake resonator. Squeeze the textured locking ring firmly and pull straight back. Do not bend it on an angle, or the neck will snap off.
  4. Loosen the Factory Clamps: Use your 8mm socket to loosen the hose clamps at both the throttle body and the factory airbox housing. Break the rubber seal by gently twisting the tube back and forth, then pull the tube out of the engine bay.
  5. Extract the Factory Airbox: The OEM airbox is held into the chassis by rubber friction grommets. Grab the box with both hands and pull firmly straight up to unseat it. If any wiring harnesses are clipped to the box, use your panel popper to pry them free without breaking the plastic anchors.

Phase 2: Installing the Cold Air Intake for Cadillac CTS (2008-2011) 3.6L Engine

  1. Assemble and Mount the Heat Shield: Pre-assemble the aftermarket heat shield and rubber edge trim on your workbench. Drop it into the engine bay, locating the pegs into the factory rubber grommets. Secure any provided mounting brackets with your 10mm socket.
  2. Transfer the MAF Sensor (CRITICAL SENSOR PROTOCOL): Use your T20 Torx bit to carefully extract the factory MAF sensor from the OEM housing. Do not touch the exposed wire resistor element. Slide the sensor into your new intake tube, ensuring the airflow arrow points toward the throttle body. Secure it using the supplied aftermarket bolts (factory coarse-thread screws will strip the new metal tube).
  3. Install the New Intake Tube: Slide the silicone couplers onto the throttle body and the new intake tube. Drop the high-flow filter into the heat shield compartment and slide the tube into the filter. Position everything so it doesn’t rub against the chassis, then tighten all hose clamps using your 8mm socket.
  4. Reconnect the PCV Line: Push the fragile factory PCV line onto the new aluminum nipple on the intake tube. Listen for an audible "click" to ensure it has locked completely. Reconnect the MAF sensor harness and push the red locking tab back into place.
  5. First Startup Protocol: Reconnect the negative battery terminal with your 10mm socket. Turn the key and start the vehicle, but do not touch the gas pedal for at least 20 seconds. The 2008-2011 Cadillac CTS 3.6L ECU needs this idle time to read the new baseline MAF data and adjust the fuel trims without throwing a lean code.

Disclaimer: This is a general guide provided for the 2008-2011 Cadillac CTS 3.6L. Always refer to your factory service manual for exact torque specifications and safety procedures.

Warranty

All products are backed by our Limited Lifetime Warranty. We stand by our quality. [See terms]
Cold Air Intake for Cadillac CTS (2008-2011) 3.6L Engine

$259.95