Hawks Motorsports is pleased to offer our clients the following 2016-2019 Cadillac CTS-V LT4 6.2L 3" GREEN Catted OEM Connection Pipes by Kooks, part number 23123300. These stainless steel connection pipes are designed for the supercharged LT4-powered Cadillac CTS-V, featuring a 3-inch inlet that transitions to the 2-3/4-inch OEM exhaust connection size and incorporates Kooks GREEN catalytic converters.

When you're opening up a blown LT4 with long tubes but still want to run the rest of the factory exhaust, these connection pipes are the piece that brings the combination together. The 3-inch Kooks side keeps the exhaust flowing from the long tube headers, then steps down to the OEM-size outlet so the system can continue into the factory exhaust. It's a clean way to build the exhaust around the CTS-V's factory rear section while adding Kooks GREEN catted technology to the setup.

Constructed from 304 stainless steel, these connection pipes are specifically designed for the 2016-2019 Cadillac CTS-V with the 6.2L supercharged LT4 V8. The system requires compatible Kooks long tube headers and requires cutting the factory exhaust for installation.

Kooks identifies the GREEN catalytic converters used in this system as EPA certified for applicable 49-state use. These products are not CARB compliant and are not legal for sale, installation, or use on a licensed vehicle in California.

KEY FEATURES

• Kooks part number 23123300
• Fits 2016-2019 Cadillac CTS-V
• Designed for the supercharged 6.2L LT4 V8
• 3-inch stainless steel connection pipes
• Transitions from 3-inch to 2-3/4-inch OEM outlet size
• Kooks GREEN catted configuration
• Includes Kooks EPA-certified Ultra High Performance GREEN catalytic converters
• Designed to connect to the OEM exhaust outlet
• Constructed from 304 stainless steel
• Requires compatible Kooks long tube headers
• Requires cutting the factory exhaust
• 49-state EPA-certified application as identified by Kooks
• Not CARB compliant for California use

PRODUCT SPECIFICATIONS

VEHICLE FITMENT / FITS THE FOLLOWING MODELS

Cadillac CTS-V

• 2016 Cadillac CTS-V — 6.2L Supercharged LT4 V8
• 2017 Cadillac CTS-V — 6.2L Supercharged LT4 V8
• 2018 Cadillac CTS-V — 6.2L Supercharged LT4 V8
• 2019 Cadillac CTS-V — 6.2L Supercharged LT4 V8

Fitment Note: These connection pipes are specifically designed for the third-generation Cadillac CTS-V LT4 exhaust configuration.

IMPORTANT APPLICATION NOTES AND EXCLUSIONS

Requires Kooks Long Tube Headers

Part number 23123300 requires compatible Kooks long tube headers. These connection pipes are not represented as a direct replacement for the factory exhaust manifolds.

Factory Exhaust Must Be Cut

Installation requires cutting the factory exhaust at the appropriate connection point.

OEM Exhaust Connection

These pipes transition from the 3-inch Kooks exhaust side to the 2-3/4-inch OEM outlet size, allowing connection to the factory exhaust configuration.

GREEN Catted Configuration

This part uses Kooks GREEN catalytic converters and should not be confused with the competition-only, non-catted connection pipe version.

California Restriction

These products are not CARB compliant and are not legal for sale, installation, or use on a licensed vehicle in California.

Verify Local Regulations

Emissions regulations can vary by location and vehicle use. Customers should verify all applicable regulations before purchasing or installing this product.

INSTALLATION NOTES

• Verify the vehicle is a 2016-2019 Cadillac CTS-V with the supercharged 6.2L LT4 before installation.
• Confirm the vehicle has the appropriate compatible Kooks long tube headers.
• The factory exhaust must be cut for installation.
• Follow current Kooks installation instructions.
• Verify exhaust alignment and clearance throughout the system before final operation.
• Inspect all exhaust connections for leaks after installation.
• Recheck the exhaust system after initial heat cycles.

FREQUENTLY ASKED QUESTIONS

What vehicles does Kooks 23123300 fit?

Kooks 23123300 fits the 2016-2019 Cadillac CTS-V equipped with the supercharged 6.2L LT4 V8.

Are these connection pipes catted?

Yes. Part number 23123300 uses Kooks GREEN catalytic converters.

What size are the connection pipes?

The system uses a 3-inch inlet and transitions to a 2-3/4-inch OEM exhaust connection.

Will these connection pipes connect to the factory exhaust?

Yes. The outlet is designed for connection to the OEM-size exhaust configuration.

Do these pipes require long tube headers?

Yes. Kooks identifies compatible Kooks long tube headers as required for this connection pipe system.

Does the factory exhaust need to be modified?

Yes. Installation requires cutting the factory exhaust.

What material are these connection pipes made from?

The connection pipes are constructed from 304 stainless steel.

Are these legal in California?

No. Kooks identifies these products as not CARB compliant, and they are not legal for sale, installation, or use on a licensed vehicle in California.

What is the difference between these and the competition-only version?

Part number 23123300 uses Kooks GREEN catalytic converters. The competition-only version uses a non-catted configuration and is a different part number.