How to replace the muffler on Buick Rainier?

Proper vehicle elevation through support becomes essential before beginning Muffler replacement. All exhausted system parts requiring replacement must be new because damaged or corroded components are unfit for reuse. Vehicle owners must order both the resonator and tailpipe for vehicles using the ll8 engine system although these components may be clamped together. Start by evaluating exhaust system components for reuse and detach the frame brace. Begin by removing the nuts fixing the Muffler to the catalytic converter pipe then extract the Muffler from the tailpipe assembly at its hanger insulators. Drop the Muffler-tailpipe assembly before cutting through the Exhaust Pipe while supported at the exhaust system. Remove the Muffler from tailpipe following this procedure. During installation position the new Muffler onto the tailpipe pipe and lock it into position by connecting it to the hanger insulators while strictly following the fastener recommendation. Fasten the Muffler to the catalytic converter through nuts that require torque of 45 n.m (33 lb ft). Attach the clamp loosely to secure the Muffler onto the tailpipe followed by tailpipe alignment before tightening clamp nuts to 50 n.m (37 lb ft). The final steps require leak testing of the exhaust system and installing the frame brace and lowering the vehicle back to its original position.

OEM Buick Rainier Muffler

Exhaust Muffler

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Buick Rainier Muffler W/Tpipe Part Number: 25887916
$746.18 MSRP: $1120.61
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Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Exhaust Pipe; Muffler; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Buick Rainier | CXL | 6 Cyl 4.2 L GAS
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Buick Rainier Muffler W/Tpipe Part Number: 15175774
Product Specifications
- Other Name: Muffler, Exhaust; Direct-Fit Exhaust; Exhaust System Kit; Exhaust Pipe; Muffler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Buick Rainier | CXL, CXL Plus | 8 Cyl 5.3 L GAS
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Buick Rainier Muffler W/Tpipe Part Number: 25839181
Product Specifications
- Other Name: Muffler Assembly-Exhaust (W/Resonator, Exhaust & Tail Pipe; Exhaust Pipe; Muffler; Muffler, Exhaust Tail Pipe; Muffler, Exhaust
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2007 Buick Rainier | CXL | 8 Cyl 5.3 L GAS
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Buick Rainier Muffler W/Tpipe Part Number: 12479984
Product Specifications
- Other Name: Muffler, Exhaust; Direct-Fit Exhaust; Exhaust System Kit; Exhaust Pipe; Muffler
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2005 Buick Rainier | CXL, CXL Plus | 6 Cyl 4.2 L GAS, 8 Cyl 5.3 L GAS

Buick Rainier Muffler

Want to cut long-term maintenance and repair costs? Choose OEM Muffler. Those parts deliver top durability you can trust. On our site, you'll find a huge catalog of genuine Buick Rainier parts. Prices are unbeatable, so you can keep more in your pocket. Every OEM Buick Rainier Muffler includes a manufacturer's warranty. You can also get an easy return policy that keeps buying risk free. Fast delivery, get your car on the road quickly. It's simple to search, compare, and order. Stop guessing about quality or fit. Order today and save with parts that last.

The Muffler is an important part that accentuates the dependability and power of the Buick Rainier a middle of the line luxury sport utility vehicle manufactured from the year 2004 to the year 2007. When it comes to optimizing the freeway hum that express themselves through an automobile's exhaust pipes, few do it quite as well as the Muffler; a complex configuration of channels and compartments, it was developed to muffle the reverberations of the sound pressure created by the retired hot gases which motivated the stationary pistons. This is especially important in ensuring that loud and obnoxious noise and NH3 emission levels are well regulated and controlled, thus the efficiency of the Muffler. The Muffler works with different Rainier models, and its availability in the various shapes and configurations contributes to its reliability and strength as it offers a long lasting design being made out of stainless steel, or aluminized steel and more. The 4.2 Vortec I6 engines and a high-performance 5.3 L Small-block V8 powertrain are accompanied by the features of the Muffler that contributes to the efficiency of engines and minimization of back pressure. Besides, the Muffler has an added role of enabling the smooth running of the car as well as the desired ambient noise level suitable for the passengers. Based on its reliability, power, and safety components, Muffler reassures the Buick Rainier to be prominent in the automotive industry and equally guarantees to be a significant component in Buick Rainier engineering.

Buick Rainier Muffler Parts and Q&A

Muffler W/Tpipe
25887916
Q: How to replace the muffler on Buick Rainier?
A:
Proper vehicle elevation through support becomes essential before beginning Muffler replacement. All exhausted system parts requiring replacement must be new because damaged or corroded components are unfit for reuse. Vehicle owners must order both the resonator and tailpipe for vehicles using the ll8 engine system although these components may be clamped together. Start by evaluating exhaust system components for reuse and detach the frame brace. Begin by removing the nuts fixing the Muffler to the catalytic converter pipe then extract the Muffler from the tailpipe assembly at its hanger insulators. Drop the Muffler-tailpipe assembly before cutting through the Exhaust Pipe while supported at the exhaust system. Remove the Muffler from tailpipe following this procedure. During installation position the new Muffler onto the tailpipe pipe and lock it into position by connecting it to the hanger insulators while strictly following the fastener recommendation. Fasten the Muffler to the catalytic converter through nuts that require torque of 45 n.m (33 lb ft). Attach the clamp loosely to secure the Muffler onto the tailpipe followed by tailpipe alignment before tightening clamp nuts to 50 n.m (37 lb ft). The final steps require leak testing of the exhaust system and installing the frame brace and lowering the vehicle back to its original position.