AP Exhaust 700429 Exhaust Muffler - Front

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AP Exhaust 700429 Exhaust Muffler - Front

Brand	AP Exhaust 700429
Position	Front
Body Height	4.06
Body Length	28
Body Material	Aluminized Steel
Body Width	10.5
Grade Type	Regular
Heat Shield Attached	No
Inlet Inside Diameter	3
Inlet Location	Center
Inlet Type	Pipe
Muffler Configuration	C/O
Muffler Type	Baffled
Outlet Inside Diameter	3
Outlet Location	Right Center
Outlet Type	Pipe
Overall Length	34
Series	MSL
Shape	Oval
Sound Level	OE comparable
Tunable	No
Fits	Chevrolet, GMC, Isuzu, Buick, and Oldsmobile · 29 vehicles

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

Baffled design. Helps control exhaust flow and reduce unwanted noise.

Aluminized steel body. Resists corrosion for dependable exhaust service.

$70.70Free shipping

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AP Exhaust 700429 Muffler for OE-Level Replacement

The AP Exhaust 700429 is a direct-fit exhaust muffler built for select GM and Isuzu applications that use a front-mounted, welded OE-style assembly. It features an aluminized steel body, baffled construction, and an OE-comparable sound level for a factory-style exhaust tone.

Key Features

Part number 700429 from AP Exhaust
Oval muffler body with aluminized steel construction
Baffled muffler design with OE comparable sound level
Center inlet and right-center outlet pipe layout
3-inch inlet inside diameter and 3-inch outlet inside diameter
Direct-fit MSL/Maximum muffler application for front position vehicles

Detailed Description

AP Exhaust 700429 is an exhaust muffler designed for vehicles that require a front-position replacement with a center inlet and right-center outlet configuration. The oval body measures 28 inches in length, 10.5 inches in width, and 4.06 inches in height, with an overall length of 34 inches. Its aluminized steel body material supports everyday exhaust service, while the baffled internal design helps maintain an OE comparable sound profile. This part number 700429 is listed for the Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Isuzu Ascender, and Oldsmobile Bravada in front-position applications.

Compatible With 2002-2009 Chevrolet Trailblazer, front; 2002-2009 GMC Envoy, front; 2004-2007 Buick Rainier, front; 2003-2005 Isuzu Ascender, front; 2006-2008 Isuzu Ascender, front; and 2002-2004 Oldsmobile Bravada, front. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

Exhaust noise that has become louder than factory levels
Corrosion or deterioration in the original muffler body
Replacement needs for a welded OE exhaust assembly
Fitment issues when restoring the front section of the exhaust system
Loss of factory-style exhaust tone on Trailblazer, Envoy, Rainier, Ascender, or Bravada models

Installation Notes and Tips

Verify the vehicle’s front exhaust layout, inlet and outlet orientation, and pipe diameter before installation. Because the OE system on several listed applications was a welded assembly, related exhaust components noted in the vehicle service information should be inspected and replaced as needed to complete the repair. Confirm clearance around the oval muffler body and align the center inlet and right-center outlet positions during installation.

Quality Assurance

AP Exhaust manufactures this muffler as a regular-grade replacement part for direct-fit service on the listed applications. The baffled design and aluminized steel construction support a factory-style exhaust repair for compatible Chevrolet, GMC, Buick, Isuzu, and Oldsmobile vehicles.

This part fits 29 vehicles

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

Year	Make	Model	Liters	Cylinders	Position	Notes
2009	Chevrolet	Trailblazer	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2009	GMC	Envoy	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2008	Chevrolet	Trailblazer	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2008	GMC	Envoy	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2008	Isuzu	Ascender	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler
2007	Buick	Rainier	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2007	Chevrolet	Trailblazer	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2007	GMC	Envoy	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2007	Isuzu	Ascender	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler
2006	Buick	Rainier	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2006	Chevrolet	Trailblazer	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2006	GMC	Envoy	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2006	Isuzu	Ascender	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler
2005	Buick	Rainier	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2005	Chevrolet	Trailblazer	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2005	GMC	Envoy	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2005	Isuzu	Ascender	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2004	Buick	Rainier	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2004	Chevrolet	Trailblazer	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2004	GMC	Envoy	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2004	Isuzu	Ascender	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2004	Oldsmobile	Bravada	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2003	Chevrolet	Trailblazer	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2003	GMC	Envoy	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2003	Isuzu	Ascender	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2003	Oldsmobile	Bravada	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2002	Chevrolet	Trailblazer	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2002	GMC	Envoy	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2002	Oldsmobile	Bravada	4.2L	L6	Front	DIRECT FIT MSL/MAXIMUM Muffler; OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
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