Mega-Flow Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID) - Walker Exhaust (22965)
Walker Exhaust - 22965

Sale Price$136.42
Description : Mega-Flow® mufflers combine Walker® engineering with solution‑driven technology to deliver high performance for Class 7 and 8 vehicles. Featuring durable aluminized steel construction, they maintain strong acoustic control while supporting reduced backpressure.
Walker Mega-Flow 22965 Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID)
Mega-Flow Exhaust Muffler
Mega-Flow Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID)
Walker Mega-Flow 22965 Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID)
Mega-Flow Exhaust Muffler
Mega-Flow Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID)
- Return Policy
- Min. 12 Months
- Safe, Secure Checkout
Product Details
Installation GuideDescription
Mega-Flow® mufflers combine Walker® engineering with solution‑driven technology to deliver high performance for Class 7 and 8 vehicles. Featuring durable aluminized steel construction, they maintain strong acoustic control while supporting reduced backpressure.
Walker Mega-Flow 22965 Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID)
Mega-Flow Exhaust Muffler
Mega-Flow Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID)
Walker Mega-Flow 22965 Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID)
Mega-Flow Exhaust Muffler
Mega-Flow Direct Fit Exhaust Muffler 4" Inlet (ID) 4" Outlet (ID)
Features & Benefits
- BUILT FOR HEAVY-DUTY VEHICLES -- High-flow construction optimized for the power and efficiency demands of Class 7 and 8 trucks
- REDUCES BACKPRESSURE -- Engineered to cut backpressure by up to 30% with no loss in sound quality
- RESISTS CORROSION -- Aluminized steel construction for durability and corrosion resistance
- VIBRATION PROTECTION -- Bridge-constructed inlets and outlets provide added strength to withstand continuous vibration
- HIGH-EFFICIENCY FLOW DESIGN -- Combines a straight‑through design with OCF roving to enhance exhaust flow for high‑performance operation
- CONTROLS HIGHWAY DRONE -- Tuned to cut highway drone for quieter, more stable cruising
- EASY TO INSTALL -- Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn't require specialized fabrication and/or welding
- BUY WITH CONFIDENCE -- Comes with Walker’s four-year warranty and exclusive 90-Day Safe & Sound® Guarantee
Part Number (MPN)
22965
Brand
SKU
22965
UPC / GTIN
086387229654 / 00086387229654
Condition
New
Brand
Walker Exhaust Mega-Flow
Overall Length
51.000
Shape
Round
Inlet Quantity
1
Inlet Type
Pipe Connection
Inlet Inside Diameter
4.000
Inlet Location
Center
Body Length
44.000
Body Width
9.000
Body Height
9.000
Body Material
Steel
Outlet Quantity
1
Outlet Type
Pipe Connection
Outlet Location
Center
Outlet Inside Diameter
4.000
Grade Type
Premium
Finish
Aluminized
Reversible
No
Tunable
No
Hanger Included
No
Prop 65 Label (Yes/No)
No
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|---|---|---|---|
Vehicle #1
Year
Make
Model
Body & Trim
Engine & Transmission
| Brand | Equivalent Part Numbers |
|---|---|
BrandEquivalent Part Numbers
AP Exhaust
4231
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30-Day Return Policy – Modern Wholesale Direct... Check out our Return Policy for more details.

Walker Exhaust
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