Overview
The MagnaFlow 14278 is a polished stainless steel straight-through muffler with a 3-inch inlet and a 2.25-inch outlet. It uses a dual offset outlet arrangement. It is universal fit, so the match to a vehicle depends on pipe diameter and tailpipe routing.
The body is 100% polished stainless steel with lap-joint welded seams. A perforated stainless steel core runs straight through the can, wrapped in stainless mesh and packed with acoustical fiber fill for a smooth, deep tone.
Key features
- 100% polished stainless steel body
- Lap-joint welded construction
- Straight-through perforated stainless steel core
- Stainless mesh wrap around the core
- Acoustical fiber fill packed tightly to hold sound quality
- Lifetime Warranty stated by the brand
Measuring before you buy
Because this muffler uses a 3-inch inlet and a 2.25-inch outlet, the two ends do not match, so a pipe or reducer section is needed on at least one side. Measure the pipe diameter at the inlet and the tailpipe diameter at the outlet before ordering. Dual offset outlets also need a clear exit path, so note the position of the rear bumper, spare mounts and any trailer equipment.
Mufflers with a stainless body and acoustical fiber fill are often chosen for a smooth tone, but the fiber can settle or break down over long periods, which changes sound over time. Watch for a buzzing note as an early sign of internal wear. Inspect the lap-joint seams for rust or cracks at each oil change so small problems are caught early.
- Measure both ends before ordering
- Check tailpipe exit clearance
- Listen for buzzing or a changed tone
Specifications
| Brand | MagnaFlow Exhaust |
|---|---|
| Part number | 14278 |
| UPC | 841380002426 |
| Muffler type | Straight Through |
| Material | Stainless Steel |
| Finish | Polished |
| Inlet location | Centered |
| Outlet location | Dual Offset |
| Tube size (inlet/outlet) | 3 Inches/2.25 Inches |
| Warranty | Lifetime Warranty |
Vehicle fitment
It is universal fit and is not tied to specific model years or chassis codes. Match it to your exhaust by the 3-inch inlet, 2.25-inch outlet and dual offset outlet location.
Universal fit does not confirm clearance to your frame, axle or tailpipe routing. Confirm your vehicle’s year, model and trim before ordering.
Installation notes
Measure your existing pipe before fitting, because the 3 Inches inlet has to match the pipe it joins. Set the dual offset outlet to the tailpipe position you need, and check body clearance once the muffler is in place.
What’s included
The muffler is the component described.
Not included: Exhaust pipe, clamps and hangers are needed to connect this muffler, so have them ready before starting.
