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From the trim to the engine, your Mercury Grand Marquis powers you through town in luxury. But if you're experiencing a rough idle or hear a booming sound underneath, you need a new performance exhaust muffler for Mercury Grand Marquis from AutoZone.

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  • Part Number: 17712
  • Notes: Universal muffler. Custom installation. Additional parts and/or modifications required. Dual exhaust.
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A rough idle, reduced fuel efficiency and engine power or a soot-covered muffler are all signs it's time for a Grand Marquis muffler repair. Let AutoZone's helpful staff provide you with trustworthy advice, so you get the best Mercury Grand Marquis performance muffler on the market. Whether you need parts or tools, AutoZone gets you the right products for the right prices. With home shipping, or Same Day Store Pickup, you get those products fast.

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