Choose a Store
  • Shop All
  • Replacement Parts
  • Performance Parts
  • Accessories
  • Oil & Fluids
  • Special Offers
  • Speed Perks
  • Advice & How-Tos
  • Project Guides
  • FAQ / Help Desk
Share
Product thumb
Product main large
Loading...
How Would You Like To Get This Item?

Store Pickup

Loading...Loading...Loading...

Same Day Home Delivery

Loading...Loading...Loading...

Home Delivery

Loading...Loading...Loading...
Loading...
Loading...

Product Information

Product Details
Part No. 12258
Warranty Details (LIMITED LIFETIME REPLACEMENT)
The MagnaFlow 5 X 8in. Oval Straight-Through Performance Exhaust Muffler 12258 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno-proven performance thanks to its free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible, universal 2.5/2.25in. diameter inlet/outlet Straight-Through layout allows you to install it in whatever orientation and configuration you see fit. However, professional installation is highly recommended. Muffler 12258s weight-optimized 5x8x18in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 12258 is made of durable, corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques, all backed by MagnaFlow's limited lifetime construction warranty.

Product Features:
  • Delivers a Smooth, Deep Tone
  • 100% Stainless Steel
  • Mufflers are Bi-Directional
Specifications
Body Material:
Stainless Steel

Hanger Included:
No

Inlet Quantity:
1

Inlet Type:
Center

Outlet Quantity:
2

Outlet Type:
Dual

Overall Length:
24 in

Reversible:
Yes
Loading...
Loading...
Loading...
No results
Loading...
Feedback
TOP REPLACEMENT PARTS

Order Lookup

Help Desk

Store Locator

In Store Services

Mobile App

CUSTOMER SUPPORT
Accessibility Statement
Contact Us
Forgot Password
Help Desk
In Store Pickup
In Store Services
Order Tracking
Recall Information
Return Policy
Same Day Delivery
© 2024 Advance Auto Parts
Privacy Policy
Terms of Use
Site Map
ADVANCING A WORLD IN MOTION®