Maximizer Rear Header For 1997 to 2008 Pontiac G. Prix, Buick, Chevrolet 3.8L for Sale

Price: $305

This item has been shown 764 times.


  • Maximizer High Performance Stainless Rear Header


  • 1997-2008 Pontiac Grand Prix GTP 3.8L N/A & Supercharged
  • 2000-05 Chevrolet Monte Carlo 3.8L N/A & Supercharged
  • 2000-05 Chevrolet Impala 3.8L N/A & Supercharged
  • 1997-03 Buick Regal 3.8L N/A & Supercharged

  • Primary Tubes Diameter OD: 1.75"
  • Header Flange Thickness: 3/8"
  • Collector Diameter: 2.2" ID
  • Port ID: 1.6"
  • 2-Bolt Exhaust Outlet: 2.9" ID
  • Runner Wall Thickness: 16 Gauge (1.5mm)
  • High flow Rear Header to replace Ported Rear Manifold
  • General Information:

    • Improve performance, efficiency, and horsepower
    • CNC-machined flange for precision fitment
    • Mandrel bent for fast smoother exhaust flow
    • Dual T.I.G. welded construction for a stronger hold
    • Individual ports for better flow
    • Accessories in photo are included
    • No installation instruction included in this kit, we recommend professional installation
    • The product is intended to be installed to the original stock exhaust setup, any modification or upgrade to the setup may cause fitment issues
    • See disclaimer on the bottom
    • Manufacturer's Limited Lifetime warranty against manufacturer defects (Must fill out and return warranty card with a copy of the receipt and within 30 days of purchase date)
    • Contact us through message center for any questions

    Standard Rateshipping charges only apply to the lower 48 US States (Does not include: Hawaii, Alaska and any other US Possessions). For all other destinations (International or US Possessions) shipping and handling charges, please email for quote.

    If item subtotal is $750.00 or more signature will be required to deliver package.

    Depending on the weight or size of the item(s), international packages may be shipped in two or more packages.

    Please note,we will only ship to verified and confirmed addresses if item is being paid via PayPal.Item(s) will only shipped after payment is received and cleared.

    International buyermay require to pay custom duties or custom fees for their package. Buyer are responsible to inquiry the information from the buyer's country custom agency before purchasing. We are not responsible to collect custom duties or custom fee, we will only charge for the shipping and the product(s) cost only.

    No Local Pickup

    No Shipping Service On Weekends & Holidays

    Thank you!

    Return Policy:

    Any product(s) that is/are cover by the warranty, must have the warranty registration card mail no later than 30 days of your purchase date. If a warranty card is not included in the package, please contact us as soon as possible for a copy of the warranty card. We will not repair or replace any product without the warranty already on file. Please also read the disclaimer on the bottom of the page.

    To return a product to us simply send us an email with the detailed reason for the return and we will send you an RMA number along with our return shipping address.

    NO returns of any type will be accepted without an RMA.

    Original shipping charges are not refunded on returned items. Customers are responsible for all shipping charges back to Motorsportsales on returned items.The merchandise must be unused, in original packaging and must be in resalable condition. All returns and exchanges must be accompany by a copy of the sale invoice.

    ALL orders are subject to 25% re-stocking fee once the item(s) is shipped and returned forANY REASON, including but not limited to: accept delivery ( or ) pick up from designated carrier, Cancelled order(s) and Incorrect address.


    Some product(s) are for off-road or show car purposes only. Some of the products may not be suitable for regular driving conditions. Products sold does not carry DOT, SAE or CARB approval. Weare not responsible for any misuse of the products. Use at your own risk.

    No refund, exchange or replacement for products relating to electrical, fuel and store clearance items.

    Disclaimer :

    For off-road competition/racing use only. This product is not intended to be installed on vehicles registered for highway use. LEGAL IN CALIFORNIA ONLY FOR RACING VEHICLES THAT MAY NEVER BE USED, OR REGISTERED OR LICENSED FOR USE, UPON A HIGHWAY!Note for buyers from the following locations:Alaska (AK), Hawaii (HI), Puerto Rico (PR), Guam (GU), Northern Mariana Islands (MP), US Virgin Islands (VI)All United States Military Bases, AA, AE, AP.

    Parts Search: