MagnaFlow
MagnaFlow Performance Exhaust Muffler 12158
MagnaFlow Performance Exhaust Muffler 12158
SKU:M6612158
In stock
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- Genuine brand-name parts
- Ships from US warehouse
- 30-day returns
The MagnaFlow 12158 is a performance exhaust muffler with a universal fit. It is a new, genuine MagnaFlow part with the manufacturer warranty, shipped from the closest US warehouse.
Key features
- SIGNATURE MAGNAFLOW SOUND - The 5" x 8" Oval body of muffler 12158 is engineered to deliver the deep, resonating sound that MagnaFlow mufflers are famous for.
- DYNO-PROVEN PERFORMANCE - Extensive dyno testing is used to ensure that this 5" x 8" Oval muffler increases engine power and performance by improving the flow dynamics and evacuation of exhaust gases.
- OPTIMAL ARCHITECTURE & CONSTRUCTION - The internal architecture of this muffler features a straight-through perforated core with two-stage acoustic packing which maintains the velocity of exhaust flow while generating a smooth, deep exhaust tone. Proudly made in the USA.
- UNIVERSAL FITMENT - 12158’s universal design enables custom muffler placement and orientation to meet the particular spacing and mechanical requirements of your vehicle. Professional installation is highly recommended.
- LIMITED LIFETIME CONSTRUCTION WARRANTY - Performance that lasts. Enjoy worry-free ownership knowing that you're backed by MagnaFlow’s limited lifetime construction warranty.
Specifications
| Brand | MagnaFlow |
|---|---|
| Manufacturer part number | 12158 |
| Part type | Muffler |
| UPC / GTIN | 841380000743 |
| Vehicle fitment | Universal |
| Weight | 4.00 lb |
| Dimensions (L × W × H) | 20 × 13 × 5 in |
| Category | Engine & Drivetrain |
| Condition | New — genuine brand-name part |
| Warranty | Manufacturer warranty |
Questions
Will this fit my vehicle?
Match the manufacturer part number 12158 to your current part, or send us your VIN and we will confirm the fit before you order.
How fast does it ship?
Orders ship from the closest US warehouse, normally within 1–3 business days, with tracking by e-mail.
Is this a genuine MagnaFlow part?
Yes — new and genuine MagnaFlow, with the manufacturer warranty.
Can I return it?
Yes. Unused items can be returned within 30 days — see our refund policy for the details.
Shipping & delivery
Shipping & delivery
Orders ship from the distributor warehouse closest to you, normally within 1–3 business days of purchase. Standard ground delivery takes 3–7 business days in the continental US; expedited options are shown at checkout. Oversized items (bumpers, running boards, large tonneau covers, some marine equipment) ship LTL freight — we contact you to schedule delivery and a signature is required.
Returns & warranty
Returns & warranty
Unused, uninstalled parts in original packaging can be returned within 30 days of delivery. A restocking fee of up to 20% may apply depending on the product and supplier, and return shipping is the buyer’s responsibility unless the item arrived defective, damaged or incorrect. Every product carries the full manufacturer warranty. Contact us with your order number to start a return.
Fitment & part numbers
Fitment & part numbers
Verify fitment with the manufacturer part number shown above and your vehicle’s year, make, model and trim. If the listing says “Fits select…”, confirm your exact application before ordering. Not sure? Send us your VIN and the part number and we’ll check it for you.
