The aFe 49-37014-C Takeda axle-back uses 2.5-inch mandrel-bent 304 stainless tubing, MIG welds and a mitered merge collector for the listed 2014-2018 hatchback gas 2.0L and 2.5L applications. The primary specifies dual 4.5-inch carbon-fiber/304 stainless clamp-on tips with aFe POWER logos and no cutting or modifications. The selected guide has unresolved component quantities that require confirmation.
The exact manufacturer table lists gas 2.0L and 2.5L for 2014-2018 with an explicit hatchback-only restriction. All nine original named groups and year bounds match the full exact-part secondary table. Every row remains conditional on hatchback body and correct engine; no sedan, turbo or later generation is inferred.
| Years | Make | Model | Submodel |
|---|---|---|---|
| 2017-2018 | Mazda | 3 | Grand Touring |
| 2014-2016 | Mazda | 3 | i Grand Touring |
| 2014-2016 | Mazda | 3 | I Sport |
| 2014-2015 | Mazda | 3 | i SV |
| 2014-2016 | Mazda | 3 | I Touring |
| 2014-2016 | Mazda | 3 | s Grand Touring |
| 2014-2016 | Mazda | 3 | s Touring |
| 2017-2018 | Mazda | 3 | Sport |
| 2017-2018 | Mazda | 3 | Touring |
| Detail | Value |
|---|---|
| Manufacturer Part Number | 49-37014-C |
| Product type | Axle Back |
| Construction | 2.5-inch mandrel-bent 304 stainless tubing, MIG welds and mitered merge. |
| Selected tips | Dual 4.5-inch carbon-fiber/304 stainless 49T25454-C07 per primary; exact related-tip listing gives 2.5-inch inlet and 7-inch length. |
| Packing conflict | The selected 13-step guide prints two driver tailpipes and one tip, but its diagram and both-side procedure show one driver and one passenger tailpipe with two tips, matching the primary dual-tip description. This quantity conflict remains unresolved; obtain the correct packing list before disassembly. Other finish rows are alternatives, not additional tips. Tip bands are mentioned in step 8 without separately assigned extra band part numbers or quantities. |
| Front seal and hardware | New gasket 05-46420, two M10 cap screws 03-50493 and two M10 flange nuts 03-50189. |
| Mounts and original muffler | Retain original rubber isolation mounts. Original rear muffler is removed; the selected Y-pipe/tailpipe bill does not list a new separate muffler. |
| Torque and recheck | 40-45 ft-lb for applicable bands only, not front-flange or unspecified tip-fastener torque. Align then tighten front to rear; retighten all clamps and hardware after 50-100 miles. |
| Power evidence | The primary overview claims up to +6.45 hp/+8.12 lb-ft, with a separate +6/+8 headline. The own linked 2018 Mazda3 axle-back chart gives +7.32 hp at 5,493 rpm (126.69 versus 119.37) and +6.99 lb-ft (121.13 versus 114.14). Separate peak horsepower differs by +6.95 hp (130.83 at 6,190 versus 123.88 at 5,970 rpm), while peak torque differs by -0.50 lb-ft (131.47 at 4,230 versus 131.97 at 3,100 rpm), not a positive peak torque gain. The chart does not identify selected MPN, tip finish, engine size, dates, gear, numeric SAE factors or complete hardware modifications. Baseline run name PDS-B2B_2 alone does not establish both test configurations. The primary claims and linked chart differences are kept distinct, with no every-engine or finish-specific guarantee. |
| Sound and emissions | Manufacturer describes a deep sound without a measured noise or drone-free guarantee. No CARB EO required per primary does not approve unrelated modifications. |
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
It is the selected 304 stainless Y-pipe and tailpipe axle-back for the listed Mazda3 hatchbacks with carbon-fiber tips. The manufacturer specifies no cutting, while printed packing quantities need confirmation.
Does it fit the Mazda3 sedan?No. The exact manufacturer explicitly restricts this system to hatchbacks with the listed gas 2.0L or 2.5L engine and supported year. Trim-name matches do not override the body restriction.
What components are listed?Y-pipe 05-145987, driver tailpipe 05-145988, passenger tailpipe 05-145989, two 2.5-inch bands 05-41061, new gasket 05-46420, two M10 cap screws 03-50493 and two M10 flange nuts 03-50189, with selected carbon-fiber tips 49T25454-C07. The bill prints driver-tailpipe quantity two and selected-tip quantity one, conflicting with the diagram, procedure and primary dual-tip description. Confirm the actual packing list with aFe before work; neither three tailpipes nor a one-tip system is silently promised.
Why must the packing list be confirmed?The selected 13-step guide prints two driver tailpipes and one tip, but its diagram and both-side procedure show one driver and one passenger tailpipe with two tips, matching the primary dual-tip description. This quantity conflict remains unresolved; obtain the correct packing list before disassembly. Other finish rows are alternatives, not additional tips. Tip bands are mentioned in step 8 without separately assigned extra band part numbers or quantities.
Does installation require the cat-back cutting procedure?No. The selected axle-back primary specifies no cutting or modifications, and its complete 13-step guide does not prescribe O2, center-brace or battery work. Do not transfer the related cat-back procedure.
Which front gasket and mounts apply?Use the supplied new gasket with two M10 screw/nut pairs at the Y-pipe. Retain the original rubber isolation mounts; the guide installs driver and passenger tailpipes into them using the two supplied 2.5-inch bands.
What torque and mileage check apply?Align safely, then tighten evenly front to rear. The selected guide gives 40-45 ft-lb only for applicable bands, not flange or unspecified tip settings. Check leaks and retighten all clamps and hardware after 50-100 miles.
How do the primary power claims compare with the chart?The primary overview claims up to +6.45 hp/+8.12 lb-ft, with a separate +6/+8 headline. The own linked 2018 Mazda3 axle-back chart gives +7.32 hp at 5,493 rpm (126.69 versus 119.37) and +6.99 lb-ft (121.13 versus 114.14). Separate peak horsepower differs by +6.95 hp (130.83 at 6,190 versus 123.88 at 5,970 rpm), while peak torque differs by -0.50 lb-ft (131.47 at 4,230 versus 131.97 at 3,100 rpm), not a positive peak torque gain. The chart does not identify selected MPN, tip finish, engine size, dates, gear, numeric SAE factors or complete hardware modifications. Baseline run name PDS-B2B_2 alone does not establish both test configurations. The primary claims and linked chart differences are kept distinct, with no every-engine or finish-specific guarantee.
California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.
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