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LNF Stainless Downpipe

LNF Stainless Downpipe


Availability: In stock


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Product Description


    • 100% stainless steel construction
    • Tig welded
    • Interlock flex section
    • Precision cut flanges
    • Angled o2 bung for rear o2 sensor (when selected)


    This is an easy bolt in upgraded 3" downpipe for your '08+ Cobalt/HHR SS TC.

    Our downpipes are made from stainless steel and fabricated using the strictest welding standards. The professional finish prevents any exhaust leaks, and the 3” diameter decreases backpressure from the engine, allowing you to squeeze every ounce of horse power out of your engine. The inclusion of stainless-steel flanges shows our commitment to high quality products that will last the lifetime of your car. Pair with the 3 inch LNF Catback Exhaust system for decreased backpressure and maximum performance.

    Pair with the 3 inch LNF Catback Exhaust system for decreased backpressure and maximum performance.

    Cat Coupon

    ZZPerformance will give out a $50 coupon code for returning your stock downpipe to ZZP for catalytic converter recycling. You don't even have to pay for return shipping! Simply email a picture of your cat to Henry@ZZPerformance.com and if it is OEM we will email you a UPS prepaid return label. Then put your old downpipe (or just the cat) in the package that the new one came in and drop it off at any UPS shipper (excluding the catback box due to being oversized). Then we'll email you a coupon code good for $50 off of your next ZZP purchase! Returned units can be cut up but the OEM converter must be intact. Already bought our downpipe? We'll still offer the $50 coupon code but you'll have to pay for the return shipping.

    Note: We can only issue prepaid shipping labels to people in the lower 48 states, this excludes Canada, Hawaii, and Alaska.

    To take advantage send to:

    Attn: Cat Credit (Order #)
    2450 28th ST SW
    Wyoming MI 49519

    For everyone: Include your original order # and email address to send the coupon code. Write down your return tracking number for your records!




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Product Questions

    Product Questions

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    Does this product work if I keep my origine exhaust ???
    There is no drop window for the prepaid label.
    What's the difference between the 200 cell and 400 cell catted downpipe?
    Will it throw a CEL since it would be a higher flowing cat?
    If I purchase the cat less downpipe what do I do with the o2 sensor? Will it cause derate in power if check engine light is on?
    Will this fit a hhr ss 2.0 manual
    Is this a direct fit down pipe for zfr turbo?
    Whats the difference between this one and the 2.5 inch Stainless Cobalt/Ion Downpipe model? I have an 09' LNF
    You no longer offer the 200 cell cat downpipe?
    I want to get the catless dp but would I need 02 bung for the 10 dollars extra to keep my CEL off?
    Do this downpipe directly bolt to stock 2.5" cat-back without welding?
    Will this work with my oem o2 sensors??
    Is this downpipe Street legal in California do I have the options in getting the California specific cat or will it pass emissions with the 400 cell cat
    what is the difference between the LNF downpipe and the ecotec turbo downpipe?
    This product does fit on cobalt ss supercharge 2005
    Does the down pipe come with new gaskets or do I need get them separate?
    Do I need to get the angle O2 adapter for clearance or will the O2 clear with out it?
    Is an O2 bung included when the 200 Cell Cat option is selected?

    Can an angled O2 bung be added?

    Lastly, what quantifiable improvements over the stock dual cat downpipe can I expect with the aforementioned cat selection?