Walker 21648 Exhaust Resonator

Name: Walker 21648 Exhaust Resonator
Brand: Walker
SKU: BDCN-21648
Price: 102.66 USD
Availability: InStock

54 vehicles fit this part

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OE Direct Replacement — Bolt-on fit, no modifications needed

Fitment: Subaru, Forester, Legacy, Outback, Crosstrek, Impreza, and XV Crosstrek

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Overview of Walker Exhaust Resonator 21648

The Walker 21648 exhaust resonator is designed for direct fit installation on select Subaru models, including Crosstrek, Forester, Impreza, Legacy, Outback, and XV Crosstrek. This resonator features a durable aluminized steel construction and precise dimensions to ensure optimal exhaust flow and noise reduction.

Direct fit for Subaru Crosstrek, Forester, Impreza, Legacy, Outback, and XV Crosstrek
Aluminized steel body for corrosion resistance
2 bolt welded flange inlet with center configuration
2.25 inch inlet and outlet diameters with pipe connection outlet
Round resonator shape with 19 inch length and 3.5 inch body width

Detailed Product Description

The Walker 21648 exhaust resonator is engineered with a round body shape measuring 19 inches in length and 3.5 inches in both width and height. Constructed from aluminized steel, it offers enhanced durability against rust and heat exposure. The inlet features a 2 bolt welded flange with a center configuration, while the outlet uses a pipe connection, both sized at 2.25 inches in diameter. This resonator is designed as a direct fit replacement, ensuring compatibility and ease of installation on Subaru Crosstrek, Forester, Impreza, Legacy, Outback, and XV Crosstrek models. Its single inlet and outlet configuration supports efficient exhaust flow and noise attenuation.

Common Applications and Problem Solving

Reduces exhaust drone and unwanted resonant noise
Replaces damaged or corroded factory resonators
Restores proper exhaust flow and sound quality
Helps maintain emissions compliance by supporting exhaust system integrity
Prevents exhaust leaks associated with worn resonator components

Installation Notes and Tips

Designed for direct fit installation on specified Subaru models; verify vehicle compatibility before purchase
Use appropriate tools to remove the 2 bolt welded flange inlet and secure the new resonator
Ensure all connections are properly sealed to prevent exhaust leaks
Inspect surrounding exhaust components for wear during installation
Professional installation is recommended for optimal fit and performance

Quality Assurance and Warranty

Walker exhaust components are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The aluminized steel construction offers corrosion resistance suitable for extended use. While specific warranty details for part number 21648 should be confirmed with the supplier, Walker typically provides limited warranties covering defects in materials and workmanship.

Brand	Walker
Part Number	21648
Body 1 Height	3.5
Body 1 Length	19
Body 1 Shape	Round
Body 1 Width	3.5
Body Height	3.5
Body Length	19
Body Material	Steel
Body Width	3.5
Friction Material Thickness	Aluminized
Inlet Configuration	Center
Inlet Quantity	1
Inlet Type	2 Bolt Welded Flange
Outlet Configuration	Center
Outlet Inside Diameter	2.25
Outlet Outside Diameter	2.25
Outlet Quantity	1
Outlet Type	Pipe Connection
Resonator Shape	Round
Universal Or Specific Fit	Direct Fit

This part fits 54 vehicles. Search below:

Year	Make	Model	Body Type	Liters	Cylinders	Fuel Type	Position	Notes
2019	Subaru	Legacy		2.5L	H4		N/A
2019	Subaru	Outback		2.5L	H4		N/A
2018	Subaru	Forester		2.5L	H4		N/A	If welded assembly, replace all required parts
2018	Subaru	Legacy		2.5L	H4		N/A
2018	Subaru	Outback		2.5L	H4		N/A
2017	Subaru	Crosstrek		2.0L	H4	GAS	N/A
2017	Subaru	Forester		2.5L	H4		N/A	If welded assembly, replace all required parts
2017	Subaru	Legacy		2.5L	H4		N/A	If welded assembly, replace all required parts
2017	Subaru	Outback		2.5L	H4		N/A	If welded assembly, replace all required parts
2016	Subaru	Crosstrek		2.0L	H4	GAS	N/A	If welded assembly, replace all required parts
2016	Subaru	Forester		2.5L	H4		N/A	If welded assembly, replace all required parts
2016	Subaru	Impreza	Hatchback	2.0L	H4		N/A	If welded assembly, replace all required parts
2016	Subaru	Impreza	Sedan	2.0L	H4		N/A	If welded assembly, replace all required parts
2016	Subaru	Legacy		2.5L	H4		N/A	If welded assembly, replace all required parts
2016	Subaru	Outback		2.5L	H4		N/A	If welded assembly, replace all required parts
2015	Subaru	Forester		2.5L	H4		N/A	If welded assembly, replace all required parts
2015	Subaru	Impreza	Hatchback	2.0L	H4		N/A	If welded assembly, replace all required parts
2015	Subaru	Impreza	Sedan	2.0L	H4		N/A	If welded assembly, replace all required parts
2015	Subaru	Legacy		2.5L	H4		N/A	If welded assembly, replace all required parts
2015	Subaru	Outback		2.5L	H4		N/A	If welded assembly, replace all required parts
2015	Subaru	XV Crosstrek		2.0L	H4	GAS	N/A	If welded assembly, replace all required parts
2014	Subaru	Forester		2.5L	H4		N/A	If welded assembly, replace all required parts
2014	Subaru	Impreza	Hatchback	2.0L	H4		N/A	If welded assembly, replace all required parts
2014	Subaru	Impreza	Sedan	2.0L	H4		N/A	If welded assembly, replace all required parts
2014	Subaru	Legacy		2.5L	H4		N/A	If welded assembly, replace all required parts
2014	Subaru	Outback		2.5L	H4		N/A	If welded assembly, replace all required parts
2014	Subaru	XV Crosstrek		2.0L	H4	GAS	N/A	If welded assembly, replace all required parts
2013	Subaru	Forester		2.5L	H4		N/A
2013	Subaru	Forester		2.5L	H4		N/A	If welded assembly, replace all required parts
2013	Subaru	Impreza	Hatchback	2.0L	H4		N/A	If welded assembly, replace all required parts
2013	Subaru	Impreza	Sedan	2.0L	H4		N/A	If welded assembly, replace all required parts
2013	Subaru	Legacy		2.5L	H4		N/A	If welded assembly, replace all required parts
2013	Subaru	Outback		2.5L	H4		N/A	If welded assembly, replace all required parts
2013	Subaru	XV Crosstrek		2.0L	H4		N/A	If welded assembly, replace all required parts
2012	Subaru	Forester		2.5L	H4		N/A
2012	Subaru	Forester		2.5L	H4		N/A	If welded assembly, replace all required parts
2012	Subaru	Impreza	Hatchback	2.0L	H4		N/A	If welded assembly, replace all required parts
2012	Subaru	Impreza	Sedan	2.0L	H4		N/A	If welded assembly, replace all required parts
2012	Subaru	Legacy		2.5L	H4		N/A	If welded assembly, replace all required parts
2012	Subaru	Outback		2.5L	H4		N/A	If welded assembly, replace all required parts
2011	Subaru	Forester		2.5L	H4		N/A
2011	Subaru	Forester		2.5L	H4		N/A	If welded assembly, replace all required parts
2011	Subaru	Impreza	Sedan	2.5L	H4		N/A	If welded assembly, replace all required parts
2011	Subaru	Legacy		2.5L	H4		N/A	If welded assembly, replace all required parts
2011	Subaru	Outback		2.5L	H4		N/A	If welded assembly, replace all required parts
2010	Subaru	Forester		2.5L	H4		N/A	If welded assembly, replace all required parts
2010	Subaru	Forester		2.5L	H4		N/A
2010	Subaru	Impreza	Sedan	2.5L	H4		N/A	If welded assembly, replace all required parts
2010	Subaru	Legacy		2.5L	H4		N/A	If welded assembly, replace all required parts
2010	Subaru	Outback		2.5L	H4		N/A	If welded assembly, replace all required parts
2009	Subaru	Forester		2.5L	H4		N/A	If welded assembly, replace all required parts
2009	Subaru	Forester		2.5L	H4		N/A
2009	Subaru	Impreza	Sedan	2.5L	H4		N/A	If welded assembly, replace all required parts
2008	Subaru	Impreza	Sedan	2.5L	H4		N/A	If welded assembly, replace all required parts

* 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:

2103-523863286-421287-479287-58750365549365564664286378297SU8405

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