/live/media/WK/WK_55272_Fro.jpg)
OE Quality
60-Day Returns
WalkerPart #: 55272
Walker 55272 Exhaust Muffler Assembly - Rear
64 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$110.48Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Quiet-Flow SS, Rear
Fitment: Chevrolet, GMC, Buick, Isuzu, and Oldsmobile, Trailblazer, Envoy, Rainier, Trailblazer EXT, Envoy XL, Envoy XUV, Ascender, and Bravada
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? See all Exhaust Muffler Assembly options
Overview of Walker Quiet-Flow SS Exhaust Muffler Assembly 55272
The Walker Quiet-Flow SS Exhaust Muffler Assembly 55272 is designed for reliable exhaust flow and noise reduction in select Buick, Chevrolet, GMC, Isuzu, and Oldsmobile models. This stainless steel muffler assembly offers durable construction and precise fitment for vehicles such as the Trailblazer, Envoy, and Ascender.
- Compatible with Buick, Chevrolet, GMC, Isuzu, and Oldsmobile SUVs and trucks
- Oval-shaped stainless steel body with aluminized finish for corrosion resistance
- Inlet and outlet pipe connections with offset configuration
- Body dimensions: 7" diameter, 9" height, 13" length
- Overall length of 58.875" for proper exhaust system integration
- Part number 55272 for accurate identification and replacement
Detailed Product Features and Specifications
The Walker Quiet-Flow SS 55272 muffler features a combination muffler type with a single inlet and outlet, both offset and designed for pipe connection. The inlet outside diameter measures 2.5 inches, while the outlet outside diameter is slightly larger at 2.75 inches, ensuring optimal exhaust flow. The muffler body is constructed from stainless steel with an aluminized finish, providing enhanced resistance to rust and corrosion. Its oval shape and dimensions (7 inches wide, 9 inches high, and 13 inches long) allow for a precise fit within the exhaust system of compatible vehicles. The overall length of 58.875 inches supports proper alignment and installation within the exhaust assembly.
About the Quiet-Flow SS Product Line
The Quiet-Flow SS line by Walker is engineered to deliver a balance of sound reduction and durability. Utilizing stainless steel materials and a combination muffler design, this product line is intended to provide consistent performance and longevity in exhaust applications. The 55272 muffler assembly exemplifies these qualities, making it suitable for mid-size SUVs and trucks requiring reliable exhaust noise control and corrosion resistance.
Applications and Common Issues Addressed
- Replacement for worn or damaged mufflers on Buick Trailblazer and GMC Envoy models
- Reduces excessive exhaust noise caused by rusted or failing mufflers
- Prevents exhaust leaks that can affect engine performance and emissions
- Restores proper exhaust flow to maintain vehicle efficiency
- Addresses corrosion damage common in older exhaust components
Installation Notes and Tips
- Ensure compatibility with specific vehicle make and model before installation
- Inspect exhaust pipes for damage or rust prior to fitting the muffler assembly
- Use appropriate clamps or welding techniques for secure pipe connections
- Verify inlet and outlet pipe diameters (2.5" inlet, 2.75" outlet) match existing exhaust system
- Offset inlet and outlet configuration requires correct alignment during installation
Quality Assurance and Warranty
Walker Quiet-Flow SS mufflers are manufactured to meet industry standards for durability and performance. The stainless steel construction and aluminized finish contribute to extended service life. While specific warranty details for part number 55272 should be confirmed with the manufacturer or distributor, Walker products typically include limited warranties covering defects in materials and workmanship.
| Brand | Walker |
|---|---|
| Part Number | 55272 |
| Position | Quiet-Flow SS, Rear |
| Body Diameter | 7 |
| Body Height | 9 |
| Body Length | 13 |
| Body Material | Stainless Steel |
| Body Width | 7 |
| Friction Material Thickness | Aluminized |
| Grade Type | Regular |
| Inlet 1 Outside Diameter | 2.5 |
| Inlet 1 Type | Pipe Connection |
| Inlet Configuration | Offset |
| Inlet Outside Diameter | 2.5 |
| Inlet Type | Pipe Connection |
| Muffler Material | Stainless Steel |
| Muffler Shape | Oval |
| Muffler Type | Combination |
| Outlet 1 Outside Diameter | 2.75 |
| Outlet 1 Type | Pipe Connection |
| Outlet Configuration | Offset |
| Outlet Type | Pipe Connection |
| Overall Length | 58.875 |
| Shape | Oval |
This part fits 64 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2009 | Chevrolet | Trailblazer | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2009 | GMC | Envoy | SLT | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2009 | GMC | Envoy | SLE | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2008 | Chevrolet | Trailblazer | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2008 | GMC | Envoy | SLT | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2008 | GMC | Envoy | SLE | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2007 | Buick | Rainier | 4.2L | L6 | Rear | Premium; without Air Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2007 | Chevrolet | Trailblazer | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2007 | GMC | Envoy | SLT | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2007 | GMC | Envoy | SLE | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2006 | Buick | Rainier | 4.2L | L6 | Rear | Premium; without Air Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2006 | Chevrolet | Trailblazer | LT | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2006 | Chevrolet | Trailblazer | LS | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2006 | GMC | Envoy | SLT | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2006 | GMC | Envoy | SLE | 4.2L | L6 | Rear | Premium; without Auto Air Leveling Suspension; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2005 | Buick | Rainier | 4.2L | L6 | Rear | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | Chevrolet | Trailblazer | LS | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2005 | Chevrolet | Trailblazer | LT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2005 | Chevrolet | Trailblazer EXT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | Chevrolet | Trailblazer EXT | 5.3L | V8 | Rear | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | GMC | Envoy | SLT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2005 | GMC | Envoy | SLE | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2005 | GMC | Envoy XL | 5.3L | V8 | Rear | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | GMC | Envoy XL | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | GMC | Envoy XUV | 5.3L | V8 | Rear | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | GMC | Envoy XUV | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | Isuzu | Ascender | 4.2L | L6 | N/A | Premium; without Extended Wheelbase; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | Isuzu | Ascender | 4.2L | L6 | N/A | Premium; Extended Wheelbase; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | Buick | Rainier | 4.2L | L6 | Rear | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | Chevrolet | Trailblazer | North Face | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2004 | Chevrolet | Trailblazer | LS | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2004 | Chevrolet | Trailblazer | LT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2004 | Chevrolet | Trailblazer EXT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | Chevrolet | Trailblazer EXT | 5.3L | V8 | Rear | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | GMC | Envoy | SLT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2004 | GMC | Envoy | SLE | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2004 | GMC | Envoy XL | 5.3L | V8 | Rear | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | GMC | Envoy XL | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | GMC | Envoy XUV | 5.3L | V8 | Rear | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | GMC | Envoy XUV | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | Isuzu | Ascender | 4.2L | L6 | N/A | Premium; without Extended Wheelbase; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | Isuzu | Ascender | 4.2L | L6 | N/A | Premium; Extended Wheelbase; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2004 | Oldsmobile | Bravada | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2003 | Chevrolet | Trailblazer | North Face | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2003 | Chevrolet | Trailblazer | LS | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2003 | Chevrolet | Trailblazer | LT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2003 | Chevrolet | Trailblazer | LTZ | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2003 | Chevrolet | Trailblazer EXT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2003 | Chevrolet | Trailblazer EXT | 5.3L | V8 | Rear | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2003 | GMC | Envoy | SLT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2003 | GMC | Envoy | SLE | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2003 | GMC | Envoy XL | 5.3L | V8 | Rear | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2003 | GMC | Envoy XL | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2003 | Isuzu | Ascender | 4.2L | L6 | N/A | Premium; Extended Wheelbase; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2003 | Oldsmobile | Bravada | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2002 | Chevrolet | Trailblazer | North Face | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2002 | Chevrolet | Trailblazer | LS | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2002 | Chevrolet | Trailblazer | LT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2002 | Chevrolet | Trailblazer | LTZ | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2002 | Chevrolet | Trailblazer EXT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2002 | GMC | Envoy | SLT | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2002 | GMC | Envoy | SLE | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
| 2002 | GMC | Envoy XL | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2002 | Oldsmobile | Bravada | 4.2L | L6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
2406280-58544884
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.