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AP Exhaust 18194 Exhaust Pipe - Center

Brand	AP Exhaust 18194
Position	Center
Material	Aluminized steel
Original Equipment Replacement	Yes
Fits	Chevrolet, GMC, Isuzu, and Buick · 13 vehicles

OE replacement. Fits like the original exhaust pipe with no modifications needed.

Aluminized steel. Helps resist corrosion for dependable exhaust service.

Cross-references 25887919 for the same application. See all 1.

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AP Exhaust 18194 Exhaust Pipe for OE Replacement

AP Exhaust 18194 is an aluminized steel exhaust pipe built as an original equipment replacement for select GM midsize SUVs. It is engineered for center exhaust routing and matches applications where the factory exhaust system was originally a welded assembly.

Key Features

Aluminized steel construction for corrosion resistance in exhaust service
OE replacement design for factory-style fit and routing
Center exhaust pipe application
Direct replacement for select Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, and Buick Rainier models
Cross-reference: this part cross-references GM 25887919 for the same application

Detailed Description

AP Exhaust 18194 is a replacement exhaust pipe for 2006-2009 Chevrolet Trailblazer, 2006-2009 GMC Envoy, 2006-2008 Isuzu Ascender, and 2006-2007 Buick Rainier with standard wheelbase configurations. The aluminized steel construction is selected for exhaust-system durability, while the OE replacement format supports factory-style alignment in the center section of the system. AP Exhaust 18194 is a practical choice when servicing a welded OE exhaust assembly on these vehicles.

What It Helps Address

Rust-through or corrosion in the center exhaust pipe
Cracks or leaks in a welded factory exhaust assembly
Exhaust noise caused by a damaged pipe section
Restricted exhaust flow from a deteriorated pipe
Fitment issues when replacing an OE-style center exhaust pipe

Installation Notes and Tips

Fits 2006-2009 Chevrolet Trailblazer, center; 2006-2009 GMC Envoy, center; 2006-2008 Isuzu Ascender, center; and 2006-2007 Buick Rainier, center. These applications note that the OE system was a welded assembly, and it is recommended that all parts noted [1] be replaced during service. Verify standard wheelbase fitment before installation and compare the existing exhaust routing to the replacement pipe.

Quality Assurance

AP Exhaust 18194 is built as an OE replacement exhaust pipe using aluminized steel for service in factory-style exhaust repairs.

This part fits 13 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	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2009	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.
2008	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.
2008	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.
2008	Isuzu	Ascender	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2007	Buick	Rainier	4.2L	L6	Center	OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2007	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.
2007	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.
2007	Isuzu	Ascender	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2006	Buick	Rainier	4.2L	L6	Center	OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
2006	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.
2006	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.
2006	Isuzu	Ascender	4.2L	L6	Center	(Standard W.B.); OE system was a welded assembly. It is recommended that all parts noted [1] should be replaced.
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Directly replaces or cross-references 1 part number

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

25887919