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Lexus GX460 Vulcan cat-back details
aFe 49-36048-P Vulcan combines 2.5-inch mandrel-bent 304 stainless tubing, a high-flow 304 stainless muffler and polished 4.5-inch clamp-on outlet. Installation keeps the original converter Y-pipe and uses two factory spring bolts plus five transferred rubber mounts. Muffler finish may vary.
Key Features
- 2.5-inch mandrel-bent 304 stainless tubing; 100% MIG-welded construction.
- High-flow 304 stainless muffler; manufacturer says finish MAY VARY.
- Selected 4.5-inch-diameter polished 304 stainless clamp-on tip with aFe logo.
- Three main exhaust sections plus selected clamp-on tip.
- One 3-inch and one 2.5-inch supplied band clamp; tip uses its supplied clamp.
- Reuse two original front flange spring bolts and five rubber isolators.
- Band clamps 40-45 ft-lb; recheck 50-100 miles.
Fitment
2010-2023 Lexus GX460 V8 4.6L per current exact manufacturer; own March 2022 manual ends at 2022, so later 2023 is a qualified manual-version difference supported by current primary and exact selected-part retailer entries. Base/Premium 2010-2023 and Luxury 2014-2023, plus Black Line Edition 2023, are supported. Earlier Black Line Edition years are not inferred. Confirm original Y-pipe/converter flange, spring bolts, five rubber hanger locations and body/spare-tire clearance. This does not establish GX550 turbo or hybrid fitment.
| Years | Make | Model | Named grade; actual V8 4.6L GX460 and original converter Y-pipe/mount layout required |
|---|---|---|---|
| 2010-2023 | Lexus | GX460 | Base |
| 2014-2023 | Lexus | GX460 | Luxury |
| 2010-2023 | Lexus | GX460 | Premium |
| 2023 | Lexus | GX460 | Black Line Edition |
Verify 49-36048-P against the actual engine, flange, hangers and mounting locations and applicable emissions requirements before ordering.
Specifications
| Detail | Value |
|---|---|
| Brand | aFe POWER |
| Manufacturer Part Number | 49-36048-P |
| System | Vulcan cat-back; three main sections plus tip |
| Tubing / welding | 2.5-inch mandrel-bent 304 stainless; 100% MIG |
| Muffler | High-flow 304 stainless; finish MAY VARY |
| Selected tip | 4.5-inch diameter polished 304 stainless; clamp-on; inlet/length unprinted |
| Clamps | ONE 3-inch and ONE 2.5-inch bands; supplied tip clamp separately unnumbered |
| Original parts | TWO flange SPRING BOLTS; FIVE rubber mounts: front1/muffler3/over-axle1 |
| Application / versions | Current primary 2010-2023 V8 4.6L; own March 2022 manual 2010-2022 |
| Torque / recheck | 40-45 ft-lb BAND clamps; no separate spring-bolt or tip-specific value; 50-100 miles |
| Performance evidence | No actual flow, dyno or measured sound/drone chart linked; no numeric gain certified |
| Emissions | Current manufacturer states no CARB EO required; original Y-pipe/converters retained |
What's Included
- 1 x 05-44863: Front pipe assembly.
- 1 x 05-245164: Muffler assembly.
- 1 x 05-245126: Over-axle assembly.
- 1 x 05-41055: 3-inch band clamp.
- 1 x 05-41061: 2.5-inch band clamp.
- 1 x 49T25454-P091: Selected polished clamp-on tip.
THREE main exhaust assemblies: front pipe 05-44863, muffler 05-245164 and over-axle 05-245126. ONE 3-inch band 05-41055 and ONE 2.5-inch band 05-41061, plus ONE selected clamp-on tip 49T25454-P091. Primary specifies 4.5-inch-diameter polished 304 stainless tip; exact tip inlet/length are not inferred from service-number suffix. Written tip step uses supplied clamp, but its separate service number/dimensions are not itemized. Reuse TWO original front flange SPRING BOLTS and transfer FIVE original rubber isolators: ONE front, THREE muffler and ONE over-axle. No new spring-bolt/gasket package, air filter, intake coupler, motor or wiring is itemized.
About aFe Power
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
Related Parts
- Manufacturer product specifications for 49-36048-P
- Exact illustrated installation manual
- Shop the complete aFe Power collection
FAQ
What is the 49-36048-P?THREE main exhaust assemblies: front pipe 05-44863, muffler 05-245164 and over-axle 05-245126. ONE 3-inch band 05-41055 and ONE 2.5-inch band 05-41061, plus ONE selected clamp-on tip 49T25454-P091. Primary specifies 4.5-inch-diameter polished 304 stainless tip; exact tip inlet/length are not inferred from service-number suffix. Written tip step uses supplied clamp, but its separate service number/dimensions are not itemized. Reuse TWO original front flange SPRING BOLTS and transfer FIVE original rubber isolators: ONE front, THREE muffler and ONE over-axle. No new spring-bolt/gasket package, air filter, intake coupler, motor or wiring is itemized.
Does it fit 2023 or the newer GX550?2010-2023 Lexus GX460 V8 4.6L per current exact manufacturer; own March 2022 manual ends at 2022, so later 2023 is a qualified manual-version difference supported by current primary and exact selected-part retailer entries. Base/Premium 2010-2023 and Luxury 2014-2023, plus Black Line Edition 2023, are supported. Earlier Black Line Edition years are not inferred. Confirm original Y-pipe/converter flange, spring bolts, five rubber hanger locations and body/spare-tire clearance. This does not establish GX550 turbo or hybrid fitment.
Which original hardware and mounts are reused?Reuse TWO original flange SPRING BOLTS and transfer FIVE original rubber isolators. Exact steps assign one to front pipe, three to muffler and one to over-axle. Original Y-pipe containing converters remains installed.
Why is a 3-inch clamp listed for a 2.5-inch system?Exact bill and muffler-installation step specify one 3-inch band at front-pipe/muffler joint and one 2.5-inch band at muffler/over-axle joint. Those joint clamp sizes do not establish an entirely 3-inch system.
What tip and tip hardware are supplied?Selected 4.5-inch polished 304 stainless clamp-on tip is 49T25454-P091. Tip step uses supplied clamp, but no separate clamp service number/dimensions or tip inlet/length are printed. The alternate finish is not an extra tip.
Is muffler finish guaranteed polished or black?Manufacturer specifies a high-flow 304 stainless muffler but says finish MAY VARY. The selected polished outlet finish does not guarantee an identical finish on the muffler.
What torque, cutting and recheck apply?No cutting step is supplied. Align and tighten front-to-rear. Band clamps require 40-45 ft-lb; no separate spring-bolt or tip-specific value is given. Re-tighten clamps/hardware after 50-100 miles.
Are power gains or drone-free sound measured?No actual flow, dyno or measured sound/drone sheet is linked. Manufacturer describes aggressive sound and freer-flowing construction; no numeric gain or drone-free cabin is certified.
Installation Instructions
Verify aFe 49-36048-P.
- Read both March 2022 manual pages, all 14 steps, exact bill/diagram and installed photograph. Verify GX460 4.6L, actual flange and five rubber mount locations. Current primary includes 2023 while manual ends 2022. Cool exhaust, use eye/hand protection and support vehicle/exhaust independently at approved points. Leave clamps loose until aligned.
- Remove original exhaust rear-to-front up to the original Y-pipe containing catalytic converters. RETAIN the Y-pipe/converters, TWO factory flange SPRING BOLTS and original rubber isolation mounts. Transfer original rubber mounts onto new system.
- Install front pipe 05-44863 using ONE original rubber mount at frame hanger and TWO original flange spring bolts. No new front gasket or spring-bolt package is itemized.
- Join muffler 05-245164 to front pipe with supplied 3-inch BAND clamp and engage THREE original rubber mounts on frame hangers. The 3-inch clamp is an actual joint size; it does not change the primary 2.5-inch system tubing specification.
- Join over-axle 05-245126 to muffler using supplied 2.5-inch BAND clamp and engage ONE original rear rubber mount. Install selected polished clamp-on tip using supplied tip clamp; separate tip-clamp service number and dimensions are not printed.
- Align for safe clearance from wires, hoses, brake lines, body and tires. Tighten evenly FRONT to REAR. BAND CLAMPS require 40-45 FT-LB; no separate original flange spring-bolt or tip-specific numeric torque is supplied.
- Start engine, inspect/repair leaks, then lower vehicle. Re-tighten clamps and hardware after 50-100 miles. Exact procedure gives no cutting, battery-disconnection, sensor-wiring, coding or welding step.
Current exact primary extends through 2023 while own manual ends 2022; confirm actual configuration. Muffler finish may vary. No separate tip inlet/length or tip-clamp service dimensions are printed. Qualitative aggressive-sound and freer-flowing descriptions are not measured gains or drone-free guarantees.
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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