AP Exhaust 18169 Exhaust Pipe - Center

Brand	AP Exhaust 18169
Position	Center
Material	Aluminized steel
Original Equipment Replacement	Yes
Fits	Buick, Chevrolet, GMC, Isuzu, and Oldsmobile · 16 vehicles

OE replacement. Direct-fit exhaust pipe for straightforward installation.

Aluminized steel. Helps resist corrosion for longer service life.

$43.54Free shipping

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AP Exhaust 18169 Exhaust Pipe Overview

AP Exhaust 18169 is an aluminized steel exhaust pipe made as an original equipment replacement for select GM and Isuzu applications. It is built for vehicles with a welded OE exhaust assembly, making it a direct-fit service part for restoring the exhaust path on compatible models.

Compatible with 2002-2005 Chevrolet Trailblazer, center; 2002-2005 GMC Envoy, center; 2002-2004 Oldsmobile Bravada, center; 2004-2005 Buick Rainier, center; and 2003-2005 Isuzu Ascender, N/A. AP Exhaust 18169 is a practical replacement when servicing the center exhaust section on these vehicles.

Key Features

Aluminized steel construction for corrosion resistance in exhaust service
Original equipment replacement design for direct-fit applications
Built for center exhaust placement on listed vehicles
Suitable for OE systems that were originally welded assemblies
AP Exhaust 18169 supports service replacement on select Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Oldsmobile Bravada, and Isuzu Ascender models

Detailed Description

This exhaust pipe is engineered for OE-style replacement on vehicles that left the factory with a welded exhaust assembly. The aluminized steel construction provides a durable service part for exhaust repair, while the direct replacement format helps maintain the original routing and fitment expected for the application. AP Exhaust 18169 is a focused solution for center exhaust repair on the listed GM and Isuzu platforms.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Is Used For

Replacing a rusted or damaged center exhaust pipe
Restoring exhaust flow after a welded OE section fails
Repairing exhaust leaks at the center section
Servicing a Trailblazer, Envoy, Rainier, Bravada, or Ascender exhaust system
Returning the exhaust path to OE-style routing on listed applications

Installation Notes and Tips

Fits 2004-2005 Buick Rainier, center. Fits 2002-2005 Chevrolet Trailblazer, center. Fits 2002-2005 GMC Envoy, center. Fits 2003-2005 Isuzu Ascender, N/A. Fits 2002-2004 Oldsmobile Bravada, center. Because the OE system was a welded assembly, AP Exhaust recommends replacing all parts noted [1] during service. Verify the vehicle’s wheelbase and exhaust configuration before installation.

Quality Assurance

AP Exhaust supplies OE replacement exhaust components for service applications, and this part is built to match the listed fitment and material requirements for the specified vehicles.

This part fits 16 vehicles

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

Year	Make	Model	Liters	Cylinders	Position	Notes
2005	Buick	Rainier	4.2L	L6	Center	OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2005	Chevrolet	Trailblazer	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2005	GMC	Envoy	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2005	Isuzu	Ascender	4.2L	L6	N/A	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2004	Buick	Rainier	4.2L	L6	Center	OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2004	Chevrolet	Trailblazer	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2004	GMC	Envoy	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2004	Isuzu	Ascender	4.2L	L6	N/A	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2004	Oldsmobile	Bravada	4.2L	L6	Center	OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2003	Chevrolet	Trailblazer	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2003	GMC	Envoy	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2003	Isuzu	Ascender	4.2L	L6	N/A	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2003	Oldsmobile	Bravada	4.2L	L6	Center	OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2002	Chevrolet	Trailblazer	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2002	GMC	Envoy	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2002	Oldsmobile	Bravada	4.2L	L6	Center	OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
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