OE Quality
60-Day Returns

Walker 21410 Exhaust Muffler
Overview of Walker Quiet-Flow SS Exhaust Muffler 21410
The Walker Quiet-Flow SS Exhaust Muffler 21410 is designed specifically for select GM vehicles, including Buick Montana, Chevrolet Uplander, Oldsmobile Silhouette, Pontiac Relay, and Saturn Terraza. This muffler features a durable stainless steel body with an aluminized finish, engineered to provide reliable exhaust flow and noise reduction.
- Specific fit for Buick, Chevrolet, Oldsmobile, Pontiac, and Saturn minivan models
- Oval-shaped muffler body measuring 8.8125 inches wide and 4.25 inches high
- Stainless steel construction with aluminized finish for corrosion resistance
- Inlet and outlet pipe connections with 2.25-inch inside diameters
- Offset inlet configuration with 2.625-inch offset and center outlet
- Overall length of 32 inches and body length of 28 inches
- Combination muffler type designed for balanced sound attenuation
Product Line Details: Walker Quiet-Flow SS
The Quiet-Flow SS line by Walker focuses on providing exhaust mufflers constructed from stainless steel for enhanced durability and corrosion resistance. This product line is engineered to meet specific vehicle fitments, ensuring proper fit and function. The 21410 muffler exemplifies the Quiet-Flow SS commitment to quality materials and precise design tailored for GM minivan applications.
Detailed Product Description
The Walker Quiet-Flow SS 21410 exhaust muffler is a specific fit part designed to replace the factory muffler on Buick Montana, Chevrolet Uplander, Oldsmobile Silhouette, Pontiac Relay, and Saturn Terraza models. Its oval-shaped body measures 8.8125 inches in width and 4.25 inches in height, with an overall length of 32 inches. The muffler features a single inlet and outlet, both with 2.25-inch inside diameters, connected via pipe connections. The inlet is offset by 2.625 inches to accommodate the vehicle's exhaust layout, while the outlet is centered. Constructed from stainless steel with an aluminized finish, this muffler offers resistance to rust and corrosion, extending service life. The combination muffler type balances sound reduction and exhaust flow, maintaining vehicle performance while reducing noise.
Common Applications and Problem Solving
- Replacement for damaged or rusted factory mufflers on compatible GM minivans
- Reduction of excessive exhaust noise due to muffler wear or failure
- Restoration of proper exhaust flow to maintain engine efficiency
- Prevention of exhaust leaks that can cause emissions issues
- Improvement of vehicle exhaust system durability with stainless steel construction
Installation Notes and Tips
This muffler is designed for specific fitment and requires proper alignment of the offset inlet and center outlet pipe connections. Ensure the inlet and outlet diameters match the vehicle’s exhaust piping (2.25 inches). Professional installation is recommended to verify secure connections and prevent exhaust leaks. The muffler is not reversible and is not tunable, so correct orientation is necessary during installation.
Quality Assurance and Warranty
Walker Quiet-Flow SS mufflers are manufactured to meet OEM specifications for fit and function. The stainless steel body with aluminized finish provides enhanced corrosion resistance compared to standard mufflers. While specific warranty details are not provided, Walker products typically come with a limited warranty against defects in materials and workmanship. Refer to Walker’s official documentation for exact warranty terms.
| Brand | Walker |
|---|---|
| Part Number | 21410 |
| Position | Quiet-Flow SS |
| Universal Or Specific Fit | Specific |
| Shape | Oval |
| Grade Type | Regular |
| Inlet Inside Diameter | 2.25 |
| Body Width | 8.8125 |
| Inlet Quantity | 1 |
| Outlet Inside Diameter | 2.25 |
| Outlet Quantity | 1 |
| Reversible | No |
| Tunable | No |
| Overall Length | 32 |
| Body Height | 4.25 |
| Body Length | 28 |
| Body Material | Stainless steel |
| Finish | Aluminized |
| Inlet 1 Inside Diameter | 2.25 |
| Inlet 1 Type | Pipe connection |
| Inlet Configuration | Offset |
| Inlet Offset | 2.625 |
| Inlet Type | Pipe connection |
| Muffler Type | Combination |
| Outlet 1 Inside Diameter | 2.25 |
| Outlet 1 Type | Pipe connection |
| Outlet Configuration | Center |
| Outlet Type | Pipe connection |
This part fits 28 vehicles. Search below:
| Year | Make | Model | Submodel | Drive Type | Liters | Cylinders | Wheel Base | Position | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 2009 | Pontiac | Montana | 3.9L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |||
| 2008 | Chevrolet | Uplander | 3.9L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |||
| 2008 | Pontiac | Montana | 3.9L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |||
| 2007 | Buick | Terraza | 3.9L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |||
| 2007 | Chevrolet | Uplander | 3.9L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |||
| 2007 | Pontiac | Montana | 3.9L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |||
| 2007 | Saturn | Relay | 3.9L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |||
| 2006 | Buick | Terraza | FWD | 3.5L | V6 | N/A | Premium; with Sport Package; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2006 | Buick | Terraza | AWD | 3.5L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2006 | Chevrolet | Uplander | FWD | 3.5L | V6 | 121.1" | N/A | Premium; with Sport Package; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2006 | Pontiac | Montana | FWD | 3.5L | V6 | N/A | Premium; with Sport Package; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2006 | Pontiac | Montana | 3.5L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |||
| 2006 | Saturn | Relay | AWD | 3.5L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2006 | Saturn | Relay | FWD | 3.5L | V6 | N/A | Premium; with Sport Package; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2005 | Buick | Terraza | FWD | 3.5L | V6 | N/A | Premium; with Sport Package; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2005 | Buick | Terraza | AWD | 3.5L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2005 | Chevrolet | Uplander | FWD | 3.5L | V6 | 121.1" | N/A | Premium; with Sport Package; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | Pontiac | Montana | Base | FWD | 3.4L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | Pontiac | Montana | SV6 | FWD | 3.5L | V6 | N/A | Premium; with Sport Package; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | |
| 2005 | Pontiac | Montana | SV6 | 3.5L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2005 | Saturn | Relay | AWD | 3.5L | V6 | N/A | Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2005 | Saturn | Relay | FWD | 3.5L | V6 | N/A | Premium; with Sport Package; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2004 | Oldsmobile | Silhouette | FWD | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; Quiet-Flow SS | ||
| 2004 | Pontiac | Montana | FWD | 3.4L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2003 | Oldsmobile | Silhouette | FWD | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; Quiet-Flow SS | ||
| 2003 | Pontiac | Montana | FWD | 3.4L | V6 | N/A | without Sport Package; Premium; Limited Lifetime Warranty; If welded assembly, replace all required parts; Quiet-Flow SS | ||
| 2002 | Oldsmobile | Silhouette | FWD | 3.4L | V6 | N/A | Premium; Limited Lifetime Warranty; Quiet-Flow SS | ||
| 2002 | Pontiac | Montana | FWD | 3.4L | V6 | N/A | without Sport Package; 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.