36 products about 1991 Mercury Grand Marquis Exhaust Manifolds, Pipes, Mufflers & Components foundVEHICLE SPECIFIC Product Specifications Notes: Premium - Limited Lifetime Warranty; Single Exhaust; If welded Assy, replace all Reqd parts.;Premium - Limited Lifetime Warranty; Dual Exhaust; If welded Assy, replace all Reqd parts; Models w/Heat Shields, use PN[35567] Shield & (2) PN[35564] Straps. Body Height: 4.250 Body Length: 19.000 Body Material: Stainless Steel Body Width: 9.750 Exhaust Component Mount Type: Uses Factory Hangers Finish: Aluminized Grade Type: Regular Inlet 1 Inside Diameter: 2.000 Inlet 1 Type: Pipe Connection Inlet Configuration: Offset Inlet Offset: 2.875 Internet Product Code (IPC): B17ECB2B32B Item has MSDS (SDS): N Max Year Covered: 1997 MFG Brand Name: Walker Exhaust MFG Model # (Series): 22559 MFG Name: Tenneco, Inc Min Year Covered: 1990 Most Popular Make / Model: Lincoln Town Car Most Popular Year: 1997 Muffler Body Height: 4.25 Muffler Body Length: 19.0 Muffler Body Material: Stainless Steel Muffler Body Width: 9.75 Muffler Color / Finish: Bare Muffler Inlet: Offset Muffler Inlet Connection Type: Pipe Connection Muffler Inlet Count: 1 Muffler Inlet Diameter (in): 2.0 Muffler Inlet Diameter 2 (in): 0.0 Muffler Inlet Diameter Designation: Inside Diameter Muffler Outlet: Offset Muffler Outlet Connection Type: Pipe Connection Muffler Outlet Count: 1 Muffler Outlet Diameter (in): 2.0 Muffler Outlet Diameter Designation: Inside Diameter Muffler Overall Length: 24.5 Muffler Reversible: No Muffler Shape: Oval Outlet 1 Inside Diameter: 2.000 Outlet Configuration: Offset Overall Length: 24.500 Product Grade: Economy Reversible: No Shape: Oval Supplier Company Name: Tenneco, Inc Total Part VIO: 383239 Universal Or Specific Fit: Specific UPC: 086387225595 Part Description: 1991 Mercury Grand Marquis Quiet Flow Stainless Steel Oval Aluminized Exhaust Muffler More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: Dual Exhaust; If welded Assy, replace all Reqd parts; Models w/Heat Shields, use PN[35567] Shield & (2) PN[35564] Straps; Optional; SoundFX for 22559;Single Exhaust; If welded Assy, replace all Reqd parts; Optional; SoundFX for 22559 Body Height: 4.250 Body Length: 19.000 Body Material: Steel Body Width: 9.750 Exhaust Component Mount Type: Uses Factory Hangers Finish: Aluminized Grade Type: Regular Inlet 1 Inside Diameter: 2.000 Inlet 1 Type: Pipe Connection Inlet Configuration: Offset Inlet Offset: 2.875 Internet Product Code (IPC): 3CDEF009254 Item has MSDS (SDS): N Max Year Covered: 1997 MFG Brand Name: Walker Exhaust MFG Model # (Series): 18190 MFG Name: Tenneco, Inc Min Year Covered: 1990 Most Popular Make / Model: Lincoln Town Car Most Popular Year: 1997 Muffler Body Height: 4.25 Muffler Body Length: 19.0 Muffler Body Material: Steel Muffler Body Width: 9.75 Muffler Color / Finish: Aluminized Muffler Inlet: Offset Muffler Inlet Connection Type: Pipe Connection Muffler Inlet Count: 1 Muffler Inlet Diameter (in): 2.0 Muffler Inlet Diameter 2 (in): 0.0 Muffler Inlet Diameter Designation: Inside Diameter Muffler Outlet: Offset Muffler Outlet Connection Type: Pipe Connection Muffler Outlet Count: 1 Muffler Outlet Diameter (in): 2.0 Muffler Outlet Diameter Designation: Inside Diameter Muffler Overall Length: 25.0 Muffler Reversible: No Muffler Shape: Oval Outlet 1 Inside Diameter: 2.000 Outlet Configuration: Offset Overall Length: 25.000 Product Grade: Economy Reversible: No Shape: Oval Supplier Company Name: Tenneco, Inc Total Part VIO: 383239 Universal Or Specific Fit: Specific UPC: 086387181907 Part Description: 1991 Mercury Grand Marquis Soundfx Passenger Side Aluminized Steel Oval Direct Fit Exhaust Muffler More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: Dual Exhaust; If welded Assy, replace all Reqd parts; At this time, this system is NOT approved for installation on the following: vehicles w/DRW, vehicles w/a rear drive shaft carrier bearing, or vehicles equipped w/a diesel Eng;Dual Exhaust; LH; If welded Assy, replace all Reqd parts; Models w/Heat Shields, use PN[35567] Shield & (2) PN[35564] Straps. Body Height: 4.250 Body Length: 19.000 Body Material: Steel Body Width: 9.750 Exhaust Component Mount Type: Uses Factory Hangers Finish: Aluminized Grade Type: Regular Inlet 1 Inside Diameter: 2.000 Inlet 1 Type: Pipe Connection Inlet Configuration: Offset Inlet Offset: 2.875 Internet Product Code (IPC): 9E2F3B75695 Item has MSDS (SDS): N Max Year Covered: 1997 MFG Brand Name: Walker Exhaust MFG Model # (Series): 18437 MFG Name: Tenneco, Inc Min Year Covered: 1990 Most Popular Make / Model: Lincoln Town Car Most Popular Year: 1997 Muffler Body Height: 4.25 Muffler Body Length: 19.0 Muffler Body Material: Steel Muffler Body Width: 9.75 Muffler Color / Finish: Aluminized Muffler Inlet: Offset Muffler Inlet Connection Type: Pipe Connection Muffler Inlet Count: 1 Muffler Inlet Diameter (in): 2.0 Muffler Inlet Diameter 2 (in): 0.0 Muffler Inlet Diameter Designation: Inside Diameter Muffler Outlet: Offset Muffler Outlet Connection Type: Pipe Connection Muffler Outlet Count: 1 Muffler Outlet Diameter (in): 2.0 Muffler Outlet Diameter Designation: Inside Diameter Muffler Overall Length: 24.5 Muffler Reversible: No Muffler Shape: Oval Outlet 1 Inside Diameter: 2.000 Outlet Configuration: Offset Overall Length: 24.500 Product Grade: Economy Reversible: No Shape: Oval Supplier Company Name: Tenneco, Inc Total Part VIO: 383239 Universal Or Specific Fit: Specific UPC: 086387184373 Part Description: 1991 Mercury Grand Marquis Soundfx Driver Side Aluminized Steel Oval Direct Fit Exhaust Muffler More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: w/18" Muffler Body; Dual Exhaust; LH; If welded Assy, replace all Reqd parts; Models w/Heat Shields, use PN[35567] Shield & (2) PN[35564] Straps.;w/18" Muffler Body; Dual Exhaust; If welded Assy, replace all Reqd parts; At this time, this system is NOT approved for installation on the following: vehicles w/DRW, vehicles w/a rear drive shaft carrier bearing, or vehicles equipped w/a diesel Eng; Optional; SoundFX Universal for 18437; Modifications and/or Additional Parts Reqd. Body Height: 4.250 Body Length: 18.000 Body Material: Steel Body Width: 8.813 Finish: Aluminized Grade Type: Regular Inlet 1 Inside Diameter: 2.000 Inlet 1 Type: Pipe Connection Inlet Configuration: Offset Inlet Offset: 2.625 Max Year Covered: 1997 Min Year Covered: 1965 Most Popular Make / Model: Lincoln Town Car Most Popular Year: 1997 Muffler Type: Combination Outlet 1 Inside Diameter: 2.000 Outlet Configuration: Offset Overall Length: 24.500 Product Grade: Economy Reversible: No Shape: Oval Total Part VIO: 614026 Universal Or Specific Fit: Universal UPC: 086387181051 Part Description: 1991 Mercury Grand Marquis Soundfx Steel Oval Direct Fit Aluminized Exhaust Muffler More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: Single Exhaust; If welded Assy, replace all Reqd parts; Optional; SoundFX Universal for 22559; Modifications and/or Additional Parts Reqd.;Dual Exhaust; If welded Assy, replace all Reqd parts; Models w/Heat Shields, use PN[35567] Shield & (2) PN[35564] Straps; Optional; SoundFX Universal for 22559; Modifications and/or Additional Parts Reqd. Body Height: 4.250 Body Length: 15.000 Body Material: Steel Body Width: 8.813 Finish: Aluminized Grade Type: Regular Inlet 1 Inside Diameter: 1.875 Inlet 1 Type: Pipe Connection Inlet Configuration: Offset Inlet Offset: 2.625 Max Year Covered: 2002 Min Year Covered: 1976 Most Popular Make / Model: Honda Accord Most Popular Year: 2002 Muffler Type: Combination Outlet 1 Inside Diameter: 1.875 Outlet Configuration: Center Overall Length: 21.500 Product Grade: Economy Reversible: No Shape: Oval Total Part VIO: 1186504 Universal Or Specific Fit: Universal UPC: 086387181785 Part Description: 1991 Mercury Grand Marquis Soundfx Steel Oval Direct Fit Aluminized Exhaust Muffler More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: Models w/Heat Shields; Used w/22559;Models w/Heat Shields; Used w/22622 Exhaust Strap Length: 34.25 Exhaust Strap Thickness: 0.025 Exhaust Strap Width: 1 Finish: Silver Hardware Material: Steel Internet Product Code (IPC): 481F35F3386 Item Grade: OEM Standard Item has MSDS (SDS): N Length: 34.250 Material: Steel Max Year Covered: 2010 MFG Brand Name: Walker Exhaust MFG Model # (Series): 35564 MFG Name: Tenneco, Inc Min Year Covered: 1973 Most Popular Make / Model: Ford F-150 Most Popular Year: 1993 Package Contents: Muffler Strap Product Grade: Economy Supplier Company Name: Tenneco, Inc Total Part VIO: 3367563 UPC: 086387355643 Part Description: 1991 Mercury Grand Marquis Stainless Steel Silver Muffler Strap More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: Single Exhaust; 2 Inch;2 Inch; Dual Exhaust Bolt Diameter: 0.375 Clamp Design: U-Clamp Clamp Maximum Diameter: 2.0 Clamp Type: U-Bolt Finish: Natural Gauge: 11.0 Grade Type: Regular Hardware Material: Steel Internet Product Code (IPC): 8D5DA5A9834 Item Grade: OEM Standard Item has MSDS (SDS): N Material: Steel Max Year Covered: 2019 MFG Brand Name: Walker Exhaust MFG Model # (Series): 35335 MFG Name: Tenneco, Inc Min Year Covered: 1955 Most Popular Make / Model: Honda Accord Most Popular Year: 2015 Nut Type: Hex Package Contents: One Exhaust Clamp Pipe Diameter: 2.000 Product Grade: Economy Saddle Hole Type: Round Supplier Company Name: Tenneco, Inc Total Part VIO: 56266152 UPC: 086387353359 Width: 3.25 Part Description: 1991 Mercury Grand Marquis Heavy Duty Steel Natural U Bolt Clamp More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Finish: Natural Flange Bolt Hole Quantity: 0 Flange Stud Hole Quantity: 2 Gasket or Seal Included: Yes Header Material: Cast Iron Heat Shield Included: No Inlet Port Shape: Rectangle Installation Hardware Included: Yes Item Grade: Regular Manifold Bolt Hole Quantity: 8 OE Part Number: E6AZ 9430-G, F2TZ 9430-B, F3TZ 9430-L, F6TZ 9430-C, F6TZ 9460-C Package Quantity: 1 Position: Passenger Side UPC: 019495741534 Part Description: 1991 Mercury Grand Marquis Cast Iron Natural Exhaust Manifold More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | All Engines VEHICLE SPECIFIC Product Specifications Notes: with Dual Exhaust;with Single Exhaust;RH, LEFT;Single Exhaust; LH, RH;Dual Exhaust; LH, RH Bolt Hole Center to Center Distance 1: 3.500 Bolt Hole Center to Center Distance 1 (in): 3.5 Bolt Hole Diameter: 0.375 Gasket / Seal Material: Fiber Material And Metal Laminate Gasket Thickness: 0.13 Gasket Type: 2 Bolt Internet Product Code (IPC): B3980928EF6 Item Grade: Standard Replacement Item has MSDS (SDS): N Material: Fiber With Steel Core With Metal Fire Ring Max Year Covered: 2011 MFG Brand Name: Walker Exhaust MFG Model # (Series): 31336 MFG Name: Tenneco, Inc Min Year Covered: 1975 Most Popular Make / Model: Mercury Grand Marquis Most Popular Year: 2003 Package Contents: 1 Gasket Port 1 Length: 2.125 Port 1 Length (in): 2.12 Port 1 Width: 2.12; 2.125 Product Grade: Economy Supplier Company Name: Tenneco, Inc Thickness: 0.130 Total Part VIO: 2413067 UPC: 086387313360 Part Description: 1991 Mercury Grand Marquis Fiber And Metal Laminate 2 Bolt Exhaust Pipe Flange Gasket More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: Dual Exhaust;Single Exhaust Attachment Method: OEM Style Class: A Finish: Black Inlet Quantity: 1 Item Grade: Standard Replacement Material: Rubber Outlet Quantity: 1 Overall Length: 2.375" Part Description: 1991 Mercury Grand Marquis Rubber Black Exhaust Insulator More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: Models w/Heat Shields; Used w/22559;Models w/Heat Shields; Used w/22622 Finish: Aluminized Hardware Material: Steel Heat Shield Efficiency (%): 0.0 Heat Shield Length: 18.0 Heat Shield Thickness: 21.0 Heat Shield Width: 0.0 Internet Product Code (IPC): D71CCB26B04 Item has MSDS (SDS): N Length: 18.000 Material: Steel Max Year Covered: 1996 Maximum Contact Temperature (°F): 0.0 Maximum Radiant Temperature (°F): 0.0 MFG Brand Name: Walker Exhaust MFG Model # (Series): 35567 MFG Name: Tenneco, Inc Min Year Covered: 1973 Most Popular Make / Model: Ford F-150 Most Popular Year: 1993 Package Contents: 1 Product Grade: Economy Supplier Company Name: Tenneco, Inc Total Part VIO: 2387332 UPC: 086387355674 Part Description: 1991 Mercury Grand Marquis Aluminized Steel Muffler Heat Shield More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: Single Exhaust Bend Type: Compression Exhaust Pipe Material: Steel Exhaust Pipe Overall Length: 41.375 Exhaust Pipe Wall Maximum Gauge: Undisclosed Finish: Aluminized Grade Type: Regular Inlet Quantity: 2 Inlet Type: 2 Bolt Welded Flange Internet Product Code (IPC): B25BB50F2B8 Item Grade: Standard Replacement Item has MSDS (SDS): N Length: 41.375 Material: Steel Max Year Covered: 1991 MFG Brand Name: Walker Exhaust MFG Model # (Series): 40490 MFG Name: Tenneco, Inc Min Year Covered: 1986 Most Popular Make / Model: Ford LTD Crown Victoria Most Popular Year: 1989 Mounting Hardware Included: No Outlet Outside Diameter: 2.000 Outlet Quantity: 1 Outlet Type: Pipe Connection Pipe Wall Thickness: 0.050 Product Grade: Economy Supplier Company Name: Tenneco, Inc Total Part VIO: 59113 Universal Or Specific Fit: Specific UPC: 086387404907 Part Description: 1991 Mercury Grand Marquis Aluminized Steel Exhaust Y Pipe More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: Single Exhaust; If welded Assy, replace all Reqd parts.;Dual Exhaust; If welded Assy, replace all Reqd parts. Exhaust Pipe Inlet Connection Type: Pipe Connection Exhaust Pipe Material: Steel Exhaust Pipe Outlet Connection Type: Spout Exhaust Pipe Overall Length: 60.62 Exhaust Pipe Wall Maximum Gauge: Undisclosed Finish: Aluminized Fitment: Direct OE Replacement Grade Type: Regular Inlet Outside Diameter: 2.000 Inlet Quantity: 1 Inlet Type: Pipe Connection Internet Product Code (IPC): 2FA76DE93DD Item Grade: Standard Replacement Item has MSDS (SDS): N Length: 60.620 Material: Steel Max Year Covered: 1997 MFG Brand Name: Walker Exhaust MFG Model # (Series): 46761 MFG Name: Tenneco, Inc Min Year Covered: 1990 Most Popular Make / Model: Mercury Grand Marquis Most Popular Year: 1997 Outlet Outside Diameter: 2.000 Outlet Quantity: 1 Pipe Diameter: 2.000 Pipe Wall Thickness: 0.050 Product Grade: Economy Supplier Company Name: Tenneco, Inc Total Part VIO: 322368 Universal Or Specific Fit: Specific UPC: 086387467612 Part Description: 1991 Mercury Grand Marquis Aluminized Steel Exhaust Tailpipe More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Finish: Natural Flange Bolt Hole Quantity: 0 Flange Stud Hole Quantity: 2 Gasket or Seal Included: No Header Material: Cast Iron Heat Shield Included: No Inlet Port Shape: Rectangle Installation Hardware Included: Yes Item Grade: Regular Manifold Bolt Hole Quantity: 8 OE Part Number: E6SZ 9431-A Package Quantity: 1 Position: Driver Side UPC: 019495017790 Part Description: 1991 Mercury Grand Marquis Cast Iron Natural Exhaust Manifold More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | All Engines VEHICLE SPECIFIC Product Specifications Notes: 4.2 & 5.0 Liter;All Models; 5.0l; Right Location: Passenger Side Other Names: Exhaust Manifold, Manifold Item Weight: 16.70 Pounds Fitment Type: Direct Replacement Part Description: 1991 Mercury Grand Marquis Manifold More Info Vehicle Fitment 1991 Mercury Grand Marquis | Base, GS, LS | 8 Cyl 5.0 L GAS VEHICLE SPECIFIC Product Specifications Part Description: 1991 Mercury Grand Marquis Exhaust Pipe Vehicle Fitment 1991 Mercury Grand Marquis | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS VEHICLE SPECIFIC Product Specifications Part Description: 1991 Mercury Grand Marquis Exhaust Resonator Vehicle Fitment 1991 Mercury Grand Marquis | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS VEHICLE SPECIFIC Product Specifications Part Description: 1991 Mercury Grand Marquis Muffler Vehicle Fitment 1991 Mercury Grand Marquis | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS VEHICLE SPECIFIC Product Specifications Part Description: 1991 Mercury Grand Marquis Tail Pipe Vehicle Fitment 1991 Mercury Grand Marquis | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS VEHICLE SPECIFIC Product Specifications Notes: Front & Rear; Left Converter; Outlet;Front & Rear; Outlet; Right Converter Gasket / Seal Material: Steel Internet Product Code (IPC): B9FE69B7D98 Item Grade: Standard Replacement Item has MSDS (SDS): No MFG Brand Name: Bosal MFG Model # (Series): 256-1016 Package Contents: Gasket Part Type #2: Loose Parts Series: Direct-Fit Exhaust Supplier Company Name: Bosal UPC: 623920324782 Part Description: 1991 Mercury Grand Marquis Exhaust Pipe Flange Gasket More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Part Description: 1991 Mercury Grand Marquis Exhaust Pipe Vehicle Fitment 1991 Mercury Grand Marquis | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS VEHICLE SPECIFIC Product Specifications Part Description: 1991 Mercury Grand Marquis Exhaust Straight Pipe Vehicle Fitment 1991 Mercury Grand Marquis | Base, Colony Park, GS, LS | 8 Cyl 5.0 L GAS, 8 Cyl 5.8 L GAS VEHICLE SPECIFIC Product Specifications Notes: 4.2 & 5.0 Liter;All Models; 5.0l; Left Location: Driver Side Part Description: 1991 Mercury Grand Marquis Exhaust Manifold More Info Vehicle Fitment 1991 Mercury Grand Marquis | Base, GS, LS | 8 Cyl 5.0 L GAS VEHICLE SPECIFIC Product Specifications Notes: Dual Exhaust System; All Models; Right; Sedan;Single Exhaust System; All Models; Sedan Part Description: 1991 Mercury Grand Marquis Exhaust Resonator Vehicle Fitment 1991 Mercury Grand Marquis | GS, LS | 8 Cyl 5.0 L GAS VEHICLE SPECIFIC Product Specifications Notes: Dual Exhaust System; All Models; Right; Sedan;Single Exhaust System; All Models; Sedan Part Description: 1991 Mercury Grand Marquis Muffler Vehicle Fitment 1991 Mercury Grand Marquis | GS, LS | 8 Cyl 5.0 L GAS VEHICLE SPECIFIC Product Specifications Notes: Single Exhaust; 2 Inch;2 Inch; Dual Exhaust Bolt Diameter: 0.313 Clamp Design: U-Clamp Clamp Maximum Diameter: 2.0 Clamp Type: U-Bolt Finish: Natural Gauge: 13.0 Grade Type: Regular Hardware Material: Steel Internet Product Code (IPC): 83F2B5256DB Item Grade: OEM Standard Item has MSDS (SDS): N Material: Steel Max Year Covered: 2010 MFG Brand Name: Walker Exhaust MFG Model # (Series): 35408 MFG Name: Tenneco, Inc Min Year Covered: 1960 Most Popular Make / Model: Honda Accord Most Popular Year: 1993 Nut Type: Hex Package Contents: One Exhaust Clamp Pipe Diameter: 2.000 Product Grade: Economy Saddle Hole Type: Round Supplier Company Name: Tenneco, Inc Total Part VIO: 8824506 UPC: 086387354080 Width: 3.125 Part Description: 1991 Mercury Grand Marquis Standard Steel Natural U Bolt Clamp More Info Vehicle Fitment 1991 Mercury Grand Marquis | All Trims | 8 Cyl 5.0L VEHICLE SPECIFIC Product Specifications Notes: Dual Exhaust System; All Models; Left; Sedan Part Description: 1991 Mercury Grand Marquis Exhaust Resonator Vehicle Fitment 1991 Mercury Grand Marquis | GS, LS | 8 Cyl 5.0 L GAS VEHICLE SPECIFIC Product Specifications Notes: Dual Exhaust System; All Models; Left; Sedan Part Description: 1991 Mercury Grand Marquis Muffler Vehicle Fitment 1991 Mercury Grand Marquis | GS, LS | 8 Cyl 5.0 L GAS VEHICLE SPECIFIC Product Specifications Notes: Dual Exhaust System; All Models; Right; Wagon;Single Exhaust System; All Models; Wagon Part Description: 1991 Mercury Grand Marquis Exhaust Resonator Vehicle Fitment 1991 Mercury Grand Marquis | GS, LS | 8 Cyl 5.0 L GAS VEHICLE SPECIFIC Product Specifications Notes: Dual Exhaust System; All Models; Right; Wagon;Single Exhaust System; All Models; Wagon Part Description: 1991 Mercury Grand Marquis Muffler Vehicle Fitment 1991 Mercury Grand Marquis | GS, LS | 8 Cyl 5.0 L GAS