Magnaflow 12158 Popular Q&A

Q: Is it true that the shorter your aftermarket muffler is, the loud...
A: Answer 1. As a very general rule, yes. There are always exceptions of course. Read More »

Magnaflow 12158 Helpful Resources

MagnaFlow 12158 - Stainless Steel Muffler | O'Reilly Auto Parts
MagnaFlow - Stainless Steel Muffler. Part #: 12158. UPC: 841380000743. 2.50" Inlet, 2.50" Dual Outlet, 5" x 8" Oval, 14" Length, Satin. Brand: MagnaFlow.

Magnaflow 12158 Magnaflow Satin Stainless Steel Mufflers - Free ...
Magnaflow 12158 - Magnaflow Satin Stainless Steel Mufflers Details. Center In / Dual Out. Reversible For Custom Installation; For Cars; Trucks and SUVs

Highway drone with Magnaflow - GMC Sierra - Truck Forum - Truck ...
I recently installed a Magnaflow, (12158) and I know about the drone. I placed Dynamat in the rear half of the truck, and while it did decrease it, ...

FS: Magnaflow Muffler #12158 for 328 to 335 exhaust - Bimmerpost
FS: Magnaflow Muffler #12158 for 328 to 335 exhaust.

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Automotive Parts and Accessories: Magnaflow 12158 Satin Stainless Steel 2.5" Oval Muffler - MagnaFlow Exhaust Products

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