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AP Exhaust 2579 Exhaust Muffler

Brand	AP Exhaust 2579
Body Height	8.5
Body Length	24
Body Material	Aluminized Steel
Body Width	11.5
Grade Type	Regular
Heat Shield Attached	No
Inlet Inside Diameter	3
Inlet Location	Left Upper / Right Upper
Inlet Type	Pipes
Muffler Configuration	D/C
Muffler Type	Baffled
Outlet Inside Diameter	3
Outlet Location	Center Lower
Outlet Type	Pipe
Overall Length	29.25
Series	Challenge
Shape	Oval
Sound Level	OE comparable
Tunable	No
Fits	Chevrolet and GMC · 53 vehicles

OE comparable sound. Delivers a familiar exhaust note for a balanced driving experience.

Baffled design. Helps control exhaust flow for a smoother, more refined tone.

Aluminized steel body. Resists corrosion while standing up to everyday exhaust heat.

Cross-references 25851450 and 25851453 for the same application. See all 2.

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AP Exhaust 2579 Muffler for Express and Savana

AP Exhaust 2579 is a baffled oval exhaust muffler built with aluminized steel for service on select Chevrolet Express and GMC Savana vans. It uses a dual-inlet, single-outlet layout with OE-comparable sound level for direct replacement needs on the factory exhaust path.

Key Features

Part number 2579 from AP Exhaust Challenge series
Oval muffler body with aluminized steel construction
Baffled muffler design with OE-comparable sound level
Dual 3-inch inlet pipes, left upper / right upper location
Single 3-inch center lower outlet pipe
Body dimensions: 8.5 in. height, 11.5 in. width, 24 in. length
Overall length: 29.25 in.
No heat shield attached

Detailed Description

This AP Exhaust muffler is built for 2003-2009 Chevrolet Express 2500, 2003-2009 Chevrolet Express 3500, 2003-2009 GMC Savana 2500, and 2003-2009 GMC Savana 3500 applications with 4.8L or 6.0L engines and 155-inch wheelbase notes. The AP Exhaust 2579 uses a D/C configuration and baffled internal design to match the factory exhaust routing on these vans, where the OE system was originally a welded assembly. For Chevrolet Express and GMC Savana owners replacing a worn factory muffler, this part number 2579 provides the correct inlet and outlet layout for the listed vehicles.

This part cross-references 25851450 and 25851453 for the same application.

What It Is Used For

Replacing a rusted or damaged factory muffler
Restoring exhaust flow on a welded OE-style system
Addressing exhaust noise that has become louder than stock
Correcting fitment issues on dual-inlet, single-outlet van exhaust layouts
Servicing exhaust systems on Express and Savana 2500/3500 vans

Installation Notes and Tips

Verify the vehicle’s engine, wheelbase, and exhaust routing before installation. This muffler is listed for 2003-2009 Chevrolet Express 2500 and 3500, plus 2003-2009 GMC Savana 2500 and 3500, with 4.8L and 6.0L engine notes. Because the OE system was welded, related exhaust parts noted in the fitment comments should be inspected and replaced as needed to complete the repair.

Quality Assurance

AP Exhaust Challenge mufflers are built as regular-grade replacement exhaust components for direct-fit service on the listed applications. The aluminized steel body and baffled construction support dependable OE-style replacement use on compatible Chevrolet Express and GMC Savana vans.

This part fits 53 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Wheel Base	Position	Notes
2009	Chevrolet	Express 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2009	Chevrolet	Express 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2009	Chevrolet	Express 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2009	Chevrolet	Express 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2009	GMC	Savana 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2009	GMC	Savana 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2009	GMC	Savana 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2009	GMC	Savana 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2008	Chevrolet	Express 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2008	Chevrolet	Express 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2008	Chevrolet	Express 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2008	Chevrolet	Express 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2008	GMC	Savana 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2008	GMC	Savana 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2008	GMC	Savana 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2008	GMC	Savana 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2007	Chevrolet	Express 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2007	Chevrolet	Express 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2007	Chevrolet	Express 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2007	Chevrolet	Express 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2007	GMC	Savana 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2007	GMC	Savana 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2007	GMC	Savana 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2007	GMC	Savana 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2006	Chevrolet	Express 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2006	Chevrolet	Express 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2006	Chevrolet	Express 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2006	Chevrolet	Express 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2006	GMC	Savana 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2006	GMC	Savana 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2006	GMC	Savana 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2006	GMC	Savana 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2005	Chevrolet	Express 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2005	Chevrolet	Express 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2005	Chevrolet	Express 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2005	Chevrolet	Express 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2005	GMC	Savana 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2005	GMC	Savana 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2005	GMC	Savana 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2005	GMC	Savana 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2004	Chevrolet	Express 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2004	Chevrolet	Express 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2004	Chevrolet	Express 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2004	GMC	Savana 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2004	GMC	Savana 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2004	GMC	Savana 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2004	GMC	Savana 3500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2003	Chevrolet	Express 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2003	Chevrolet	Express 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2003	Chevrolet	Express 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2003	GMC	Savana 2500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2003	GMC	Savana 2500	4.8L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 2500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
2003	GMC	Savana 3500	6.0L	V8	155.0"	N/A	Challenge LTW; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.; 3500 Express/Savana; 4.8L & 6.0L Engine; 155" W.B.
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Directly replaces or cross-references 2 part numbers

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

2585145025851453