Description

Aluminized Steel 6" x 45" Internal VK Style Muffler Insert

*Dual Exhaust Applications Only!

*NOT Designed to Work with Emission Equipped Engines or Stacks with Built-In Reducer.

Lower cab noise and boost performance with this 6"x45" aluminized steel VK muffler insert for 6" stacks. Fits high-output engines. Bolt-on setup. Order yours now!

Internal VK Style Muffler Insert
Fits 6" Outer Diameter Pipes
Overall Length: 45"
Material: Aluminized Steel
Recommended Engine Sizes:

8.3L / 506 CU Inches
12.7L / 745 CU Inches (350+ HP)
13L / 794 CU Inches (350+ HP)
14L / 855 CU Inches
14.6L / 892 CU Inches
14.7L / 898 CU Inches
15L / 916 CU Inches (Up to 400 HP)

Includes Mounting Templates and Stainless Steel Hardware
Sold Individually
Made in the USA

Get a deep, aggressive tone without sacrificing comfort in the cab with this 6" x 45" VK Style Internal Muffler Insert. Crafted in the USA from durable aluminized steel, this bolt-in muffler insert is engineered to reduce exhaust noise compared to straight pipes, making it ideal for long hauls and heavy-duty performance. It slides seamlessly into 6" diameter stacks and locks in place using the included stainless steel hardware and mounting template for a secure, no-hassle installation. Designed for high-displacement engines, this VK insert enhances backpressure balance for optimized power and smoother throttle response. Whether you're running a 12.7L Detroit, a 14L Cummins, or a 15L powerhouse, this muffler insert delivers quieter operation without killing the chrome look or performance edge.

If you should need additional Truck Parts and Accessories, please don't hesitate to call our toll-free number 1-888-888-7990

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Warranty Information

Grand Rock 1-Year Warranty

This product is covered by a 1-year warranty from the date of purchase.

In the rare event that a product does not perform as expected, Grand Rock warrants its products against failure due to defects in materials and workmanship for the period specified under Terms and Conditions for the particular part. Grand Rock’s obligation under this warranty covers replacement of the failed part, including transportation charges. Grand Rock is not responsible for labor costs. Please note that, due to the higher heat output of Emissions Components, Grand Rock cannot warrant the Chrome Plating for any item installed on any truck made after 2007.

The Length of Warranty for replacement parts provided under warranty coverage is the balance of the warranty period remaining on the part being replaced. It is important that the customer handles, stores, and installs all products properly. This warranty does not cover failure due to misapplication, misuse, abuse, neglect, rust through and corrosion (muffler), improper service practices or non-approved modification. If you have any questions about proper handling, storing or installation do not hesitate to contact Grand Rock.

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Additional Information

netsuite_category:

Exhaust : Mufflers

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