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Magnaflow 30" Diesel Muffler 12773
PART#
12773 | SKU MAG12773
★★★★★
Vehicle Fitment For:
Universal - 4" Inlet/Outlet, 30" Length (Satin Finish)
$216.00
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Description
MagnaFlow Diesel Performance mufflers are 100% stainless steel and lap-joint welded for solid construction and rugged reliability even in the most extreme conditions. They feature a free-flowing, straight-through perforated stainless steel core, stainless mesh wrap and acoustical fiber fill to deliver that smooth, deep tone. Mufflers are packed tight with this acoustical material unlike some others' products to ensure long life and no sound degradation over time. Backed by a Lifetime Warranty! THE WIDE OPEN PERFORMANCE DIFFERENCE!
Body Shape: 7in. Round
Core Size: 3.5in.
Body Length: 30in.
Material: 100% Stainless Steel - Satin Finish
Body Shape: 7in. Round
Inlet/Outlet Size: 4in./4in. - ID (Inner Diameter)
Body Length: 30in.
Overall Length: 36in.
Core Size: 3.5in.
Position: Center/Center
Manufacturer Warranty*:
Lifetime
Lifetime
Instructions & Tech Info
Installation Info
Customer Average
2 Hours
Recommended Specialty Tool
Reviews For MagnaFlow 12773
Overall Rating
/5
4 Reviews
Rating Snapshot
3
1
0
0
0
Verified Buyer
Diesel Magnaflow 30" Muffler
Stumper (Virginia) | March 23rd, 2026
Initally out of stock, but patience won the day. Muffler shipped and is now happily mufflering on my 7.3L Ford Excursion. Very satisfied...
Verified Buyer
Very quiet
Bob (Texas) | January 15th, 2023
Made it even quieter than stock with weight loss 2014 Ram 2500.
Magnaflow Muffler
Brandon (MN) | November 13th, 2020
Great sound!! Helped quiet down my duramax.
Quiet
Ace (Las Vegas) | June 8th, 2014
I have an 03 ram Quad cab with a long bed with Cummins and I took the stock exhaust off and put a 4" MBRP on it. Great system but too loud in the cab if pulling a trailer. I left the MBRP and added a 30" Magnaflow on it, for a total of 54" of muffler. Between the two it dropped 12db according to phone app. Quiet and loving it. I won't worry about hurting the grand kids hearing. Now running 78 db empty ,84db towing.
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Frequently Asked Questions
Does the muffler fit over the exhaust pipe or onside it on both sides.
Yup, The Magnaflow 12773 Muffler has a 4" Inner Diameter (ID) so that you can slip 4" O.D. pipe inside of it.
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Specifications For MagnaFlow 12773
MPN
12773
SKU
MAG12773
GTIN
841380001436
ID
13614
Manufacturer Name
MagnaFlow
Shipping Weight
26.00 lb.
Shipping Length
41 in.
Shipping Width
7 in.
Shipping Height
8 in.
Fuel Type
Diesel / Gas
Manufacturer Warranty*
Lifetime
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
Internal
L0R0
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