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Price: $230

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The Very Best 3800 Series II Downpipe In the Market
ZZPerformance 3" w/ High Flow Catalytic Converter Stainless Polished 304 Downpipe
Pictured is one that has not been polished yet, but the one you will receive looks exactly the same except it will be polished and shiny.
We are the leader in the 3800 Series II engine and have been making and selling these downpipes longer than anyone on the market. The stock downpipe is very restrictive. Depending on what you have done to your car it adds up to 15 HP.
This is a complete bolt on. Will bolt to your stock exhaust manifold and connect to your stock catback exhaust system. You'll see others trying to replicate, but there is just no comparison. We run Interlock Flex Section. Not a cheap flex that frays away. Others have stainless, but typically 409, which is cheap stainless. Ours is 304 which is far more expensive and higher quality. All the flanges and exhaust hanger is also stainless.
Front and rear gasket, hanger, and o2 Bung is included on this downpipe. Direct bolt on. No welding needed.
Keep in mind this is a Performance downpipe. This is emissions legal in most states, but California. California has special cats that are required. Check with your local DMV. In most cars listed below pre 2003 will not have a problem with the check engine light coming on. 2004 + Grand Prix's need the wires on the o2 sensor extended and may throw a check engine light as it flows more air than stock. In the 2004+ models it is hit and miss. Some will still throw a code and some will not. We have sold thousands of these exact same downpipes since 2003 and any car that throws a o2 sensor code still after installing a downpipe on a pre 2003 results in a bad MAF sensor or a bad front o2 sensor in the exhaust manifold. The catalytic converter included is a high flow 3" that is 49 state legal.
This fits on all the following cars:
1997-2005 Pontiac Grand Prix with 3800 Series II engine-Both Supercharged and Non-Supercharged cars2000-03 Monte Carlo 3800 3.8L Engine Only2000-02 Impala 3800 3.8L Engine Only1997-03 Regal3800 3.8L Engine Onlyand 1998-99 Intrigue3800 3.8L Engine Only
Add $20 for UPS ground shipping within the U.S.'s 48 states
Canadian buyers $53 for USPS Priority Mail International.
In stock and ready to ship. We ship the same or following business day.