USA Kooks Nascar Modified Spec Muffler
USA Kooks Nascar Modified Spec Muffler
Part number: 0WZX7
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- Tracking emailed when it ships
- Free fitment check before you order
USA Kooks Nascar Modified Spec Muffler. Highlights include 100 Percent Manufactured In The USA and kooks System Are Specifically Designed For Maximum Power. A performance exhaust changes the sound and can improve flow; replacement parts restore a quiet, leak-free system.
Key features
- 100 Percent Manufactured In The USA
- Kooks Headers And Exhaust Make The Most Power In The Industry
- Kooks System Are Specifically Designed For Maximum Power
- Every Kooks Product Is Dyno And Race Tested
- 3 Generations Being Family Owned And Operated
Specifications
- Brand: USA
- Part type: Exhaust part
Fitment
This listing does not name specific vehicles. Match the part number and the specifications with the part you are replacing.
What it does
Exhaust parts carry gases away from the engine, quiet the sound and clean up emissions. Exhaust parts carry gases away from the engine; replacing rusted or restrictive parts fixes leaks and noise, and performance designs can add flow and sound.
Installation & tips
- Check local noise and emissions rules, and use new gaskets and hangers when you fit it.
- Clamps and hangers: Old hardware is usually rusted.
- Gaskets: New gaskets prevent leaks at each joint.
- Work on a cool engine with the vehicle secured, and use a service manual for your vehicle for torque specs and procedures.
FAQ
Can I install it myself?
Many owners do this job at home with basic tools and a service manual for their vehicle. If you are not sure, have it fitted by a qualified mechanic.
What should I check before ordering?
Compare the part number, specifications and fitment on this page with your vehicle and with the part you are replacing.
Before you order
- Measure the part you are replacing and compare it with the specifications above.
Good to know
- Warranty: Kooks products are 100 Percent Manufactured in the USA. Kooks Headers and Exhaust make the most power in the industry, specifically designed for maximum power. Kooks products are made of T304 Air Craft Quality Steel and come with a limited lifetime warranty to the original purchaser. Every Kooks product is dyno and race tested. Kooks is 3 generations of being family owned and operated.
- Warranty: Limited Lifetime Warranty To Original Purchaser

Exhaust part: what to know
A performance exhaust changes the sound and can improve flow; replacement parts restore a quiet, leak-free system.
Fitment notes
- Specs, lead time and warranty come from the manufacturer and supplier and can change. The details above this guide are the latest we have.
Not sure it fits? Tell us exactly what you drive and we'll confirm fitment first. It's free and saves a return.
Ask about fitmentWhat else to plan for
- Clamps and hangers. Old hardware is usually rusted.
- Gaskets. New gaskets prevent leaks at each joint.
More for your car: Mufflers · Exhaust
Questions about exhaust part
Will this fit my car?
Is this street legal where I live?
Where do specs and warranty details come from?
Questions & answers
No questions yet about this part. Ask about fitment, what's in the box or installation and we'll answer here.