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Walker
Quiet-Flow SSWalker 55272 Exhaust Muffler Assembly - Rear
| Brand | Walker 55272 |
|---|---|
| Position | 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 |
| Product line | Quiet-Flow SS |
| Fits | Chevrolet, GMC, Buick, Isuzu, and Oldsmobile · 64 vehicles |
OE-style replacement. Direct-fit muffler assembly for straightforward installation.
Stainless steel construction. Helps deliver longer life than typical aluminized mufflers.
Quiet-Flow SS line. Walker muffler assembly with a combination design.
Cross-references AP Exhaust 44884, TYC 2406 and 280-585 for the same application. See all 3.
$116.27Free shipping
In stock · usually ships same day before 1pm CST
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker Quiet-Flow SS Muffler Assembly
Walker Quiet-Flow SS 55272 is a direct-fit exhaust muffler assembly built for rear applications on select Chevrolet, GMC, Buick, Isuzu, and Oldsmobile vehicles. It combines stainless-steel construction with an OE-style replacement layout to support longer service life than typical aluminized mufflers.
For owners searching for a replacement muffler for a 2006-2009 Chevrolet Trailblazer or 2006-2009 GMC Envoy, this assembly follows the original fitment pattern and connection style. The Walker Quiet-Flow SS line focuses on direct replacement fitment for domestic and foreign vehicles.
Key Features
- Part number 55272
- Quiet-Flow SS product line from Walker
- Stainless-steel muffler body and stainless-steel muffler material
- Oval muffler shape with a 7-inch body diameter
- Offset inlet and offset outlet with pipe connections
- 2.5-inch inlet outside diameter and 2.75-inch outlet outside diameter
- Overall length: 58.875 inches
- Direct-fit OE-style exhaust muffler assembly
- Aluminized finish
Product Details
Walker 55272 is an exhaust muffler assembly engineered as a replacement for factory-style rear exhaust service. The stainless-steel body and muffler construction are selected for durability, while the oval combination muffler design supports a direct-fit installation path on listed applications. This part is a practical choice for drivers replacing a worn rear muffler on a Chevrolet Trailblazer, GMC Envoy, or related platform vehicle.
This part cross-references AP Exhaust 44884 for the same application.
Common Reasons to Replace
- Rust or corrosion in the muffler body
- Exhaust noise from a leaking or damaged rear muffler
- Poor sealing at the inlet or outlet pipe connection
- Factory muffler wear on high-mileage Chevrolet Trailblazer and GMC Envoy models
- Replacement after welded exhaust section damage
Installation Notes and Fitment
Compatible With rear-position applications listed below. If the exhaust system is welded, replace all required related parts during service to restore proper alignment and sealing.
- Fits 2006-2009 Chevrolet Trailblazer, rear; Premium; without Auto Air Leveling Suspension
- Fits 2002-2005 Chevrolet Trailblazer, N/A; Premium
- Fits 2002-2005 Chevrolet Trailblazer EXT, N/A; Premium
- Fits 2003-2005 Chevrolet Trailblazer EXT, rear; Premium
- Fits 2006-2009 GMC Envoy, rear; Premium; without Auto Air Leveling Suspension
- Fits 2002-2005 GMC Envoy, N/A; Premium
- Fits 2003-2005 GMC Envoy XL, rear; Premium
- Fits 2002-2005 GMC Envoy XL, N/A; Premium
- Fits 2004-2005 GMC Envoy XUV, rear; Premium
- Fits 2004-2005 GMC Envoy XUV, N/A; Premium
- Fits 2006-2007 Buick Rainier, rear; Premium; without Air Suspension
- Fits 2004-2005 Buick Rainier, rear; Premium
- Fits 2004-2005 Isuzu Ascender, N/A; Premium; without Extended Wheelbase
- Fits 2003-2005 Isuzu Ascender, N/A; Premium; Extended Wheelbase
- Fits 2002-2004 Oldsmobile Bravada, N/A; Premium
Quality Assurance
Walker Quiet-Flow SS muffler assemblies are positioned as direct-fit OE-style replacements with stainless-steel construction for longer life than typical aluminized mufflers. Part number 55272 is listed for 2002-2009 applications across Chevrolet, GMC, Buick, Isuzu, and Oldsmobile platforms, including Trailblazer and Envoy models.
This part fits 64 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| 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 |
| No rows match your filter. | |||||||
Directly replaces or cross-references 3 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
AP Exhaust — 44884TYC — 2406280-585