AP Exhaust
DIRECT FIT MSL/MAXIMUM Muffler

AP Exhaust 700451 Exhaust Muffler - Right

Brand AP Exhaust 700451
Position Right
Body Height 7
Body Length 14
Body Material Aluminized steel
Body Width 9
Grade Type Regular
Heat Shield Attached No
Inlet Inside Diameter 2
Inlet Location Left upper
Inlet Quantity 1
Inlet Type Pipe
Muffler Configuration O
Muffler Type Baffled
Outlet Location Right upper
Outlet Outside Diameter 2.25
Outlet Quantity 1
Outlet Type Spout
Overall Length 32.5
Series Msl
Shape Oval
Sound Level Oe comparable
Tunable No
Product line DIRECT FIT MSL/MAXIMUM Muffler
Fits Chevrolet · 18 vehicles

Direct fit replacement. Built for straightforward installation with no modifications needed.

Aluminized steel body. Helps resist corrosion while keeping the muffler durable.

OE-comparable sound. Delivers a familiar exhaust note for everyday driving.

$71.32Free shipping
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Order total $71.32
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Free returns within 60 days if it doesn't fit when fitment is verified.

AP Exhaust 700451 Direct Fit Muffler

AP Exhaust 700451 is a direct-fit MSL/Maximum muffler built for OE-style replacement on select Chevrolet Impala applications. It uses an oval baffled design with aluminized steel construction and OE-comparable sound level for a factory-style exhaust repair.

Fits 2006-2013 Chevrolet Impala, right. Fits 2014-2016 Chevrolet Impala, right. Fits 2014-2016 Chevrolet Impala Limited, right.

Key Features

  • Direct Fit MSL/Maximum muffler for select Chevrolet Impala and Impala Limited applications
  • Oval muffler configuration with baffled internal design
  • Aluminized steel body for everyday exhaust service
  • OE-comparable sound level for a factory-style tone
  • Single inlet, single outlet layout with left upper inlet and right upper outlet locations
  • AP Exhaust 700451 part number for application matching and catalog lookup

Product Details

This AP Exhaust muffler is part of the MSL series and is shaped to match the packaging and routing needs of the original exhaust system on the Chevrolet Impala platform. The body measures 7 inches high, 9 inches wide, and 14 inches long, with an overall length of 32.5 inches. It uses a 2-inch inlet pipe and a 2.25-inch outlet spout, making it a direct-fit replacement for the right-side muffler position on listed vehicles. The AP Exhaust 700451 is a practical choice when replacing a worn, noisy, or corroded muffler on a 2006-2013 Chevrolet Impala or 2014-2016 Chevrolet Impala / Impala Limited application.

The Direct Fit MSL/Maximum muffler line is focused on OE-style fitment and straightforward exhaust replacement for vehicles where the original system was welded. For these applications, matching the correct position and system layout is important for proper alignment and exhaust routing.

Common Repair Uses

  • Restores a damaged or rusted right-side muffler on a Chevrolet Impala
  • Addresses exhaust noise from a failing baffled muffler
  • Replaces a welded OE muffler assembly with a direct-fit service part
  • Corrects exhaust leakage caused by corrosion at the muffler body
  • Returns a factory-style exhaust tone on Impala and Impala Limited models

Installation Notes

Verify the right-side position, inlet location, and outlet orientation before installation. These Impala applications note that the OE system was a welded assembly, and related parts identified in the vehicle-specific service path should be replaced as needed to complete the repair correctly. Confirm pipe diameter and routing against the original exhaust before final fitment.

Quality Assurance

AP Exhaust manufactures this muffler as a direct-fit replacement in the MSL/Maximum line, with aluminized steel construction and OE-comparable sound characteristics for listed Chevrolet Impala applications. Part number 700451 is cataloged for accurate vehicle matching and service replacement.

This part fits 18 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersPositionNotes
2016ChevroletImpala—3.6LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; (Old Body Style)
2016ChevroletImpala Limited—3.6LV6RightOE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; DIRECT FIT MSL/MAXIMUM Muffler
2015ChevroletImpala—3.6LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; (Old Body Style)
2015ChevroletImpala Limited—3.6LV6RightOE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; DIRECT FIT MSL/MAXIMUM Muffler
2014ChevroletImpala—3.6LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; (Old Body Style)
2014ChevroletImpala Limited—3.6LV6RightOE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; DIRECT FIT MSL/MAXIMUM Muffler
2013ChevroletImpala—3.6LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2012ChevroletImpala—3.6LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2011ChevroletImpala—3.9LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2010ChevroletImpala—3.9LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2009ChevroletImpalaSS5.3LV8RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2009ChevroletImpala—3.9LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2008ChevroletImpalaSS5.3LV8RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2008ChevroletImpala—3.9LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2007ChevroletImpalaSS5.3LV8RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2007ChevroletImpala—3.9LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2006ChevroletImpalaSS5.3LV8RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2006ChevroletImpala—3.9LV6RightDIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.