This part fits your vehicle! Based on the manufacturer’s specs, this product is an exact fit for your 1985-2008 Mercury Grand Marquis

1985-2008 Mercury Grand Marquis - Flowmaster Muffler Super 44 Delta Flow - Aluminized steel, Direct OE Replacement, High Flow OE Replacement

Part number: F139430452
Manufacturer number: 9430452

Flowmaster

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Availability: In stock


List Price: $133.13
Our Price: $112.82
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Product Description: FLOWMASTER SUPER 44 SERIES DELTA FLOW MUFFLER, ALUMINIZED STEEL, BLACK -- For off-road and race applications; 3 in. inlet diameter;...Read More


Material: Aluminized steel

Series: Super 44 Delta Flow

Type: Direct OE Replacement, High Flow OE Replacement

Color: Black

Warranty: Flowmaster's limited 3-year warranty

Quantity Sold: Sold individually


  • Overview
  • Manufacturer info
  • Extended Warranty
FLOWMASTER SUPER 44 SERIES DELTA FLOW MUFFLER, ALUMINIZED STEEL, BLACK -- For off-road and race applications; 3 in. inlet diameter; 2.5 in. outlet diameter; Single center inlet and dual offset outlet configuration; 4 in. thick x 9.75 in. wide x 13 in. case length, 19 in. overall length; Oval casing; Chambered internal construction; The newest technology from Flowmaster; Designed to replace the old original Flowmaster 40 series muffler; This is the most aggressive and deepest tone street and strip muffler Flowmaster has ever made; It offers maximum performance and an improved flow path radius; Generates more torque and power; Dual exhaust cross-over pipe is strongly recommended in all dual exhaust applications; Requires welding; With Flowmaster's limited 3-year warranty.

This product fits the following Mercury Grand Marquis submodels

  • 1985-1986: Base; 8 Cyl 5.0L;
  • 1985-1986: Colony Park; 8 Cyl 5.0L;
  • 1985-1991: LS; 8 Cyl 5.0L;
  • 1986-1986: Base; 8 Cyl 5.8L;
  • 1986-1986: LS; 8 Cyl 5.8L;
  • 1987-1991: GS; 8 Cyl 5.0L;
  • 1992-2008: GS; 8 Cyl 4.6L;
  • 1992-2008: LS; 8 Cyl 4.6L;
  • 2005-2005: GSL; 8 Cyl 4.6L;
  • 2005-2005: Limited Edition; 8 Cyl 4.6L;
  • 2005-2005: Ultimate Edition; 8 Cyl 4.6L;

Product reviews

by , July 5, 2008

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The price was great, fast delivery. The item looks great and should work great.


Exelent Performing Muffler by City3f39, August 19, 2008

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Installation was fairly easy. Couldn't find reducers or right pipe diameter to convert existing pipe. Had a local muffler shop stretch some pipe to get proper fit, and intake pipe had to be welded to muffler to seal fit. Otherwise, it has turned my 04 Yu


GREAT by matthew hickle, March 3, 2009

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LOL this is awesome, i think it it too loud but than i cut the tail pipes lol i hope it passes smog ")