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Twisted Steel single long tube header for Toyota Tacoma 2.7L, 2005–2022
The aFe 48-36018 single-header assembly uses 1-5/8-inch mandrel-bent 304 stainless tubing, 100% MIG welding, optimized tube lengths and a formed collector. Factory-style flanges connect to the original exhaust without cutting or modification. Current exact manufacturer applications and complete selected guide cover gas L4 2.7L Tacoma 2005–2022 only. Original air injection, intake, MAF wiring and required exhaust hardware are retained and restored; no new catalyst or emissions-delete configuration is established.
Key Features
- Selected aFe part 48-36018.
- One selected 1-5/8-inch mandrel-bent 304 stainless long tube header with MIG welding and a formed collector; this is not a V6 header pair.
- Factory-style flange connection to the original exhaust, with no cutting or modification specified.
- Formal bill lists one assembly and two M8 studs; no new gasket, filter, airbox or catalyst is established as supplied.
- Original exhaust-manifold and air-injection gaskets/hardware are reused as directed; inspect actual condition and obtain exact required service replacements if necessary.
- Original air injection, A/C and air-pump brackets, intake/airbox/filter, MAF connector and harness clips are restored.
- Not CARB exempt; manufacturer excludes California purchase and use on California DMV-registered vehicles.
Fitment
Current exact primary observed table and the complete selected guide agree on Toyota Tacoma 2005–2022 gas L4 2.7L. The full exact-MPN named table refines the former blank model scope into Base and Pre Runner 2005–2015, SR and SR5 2016–2022. The original 2005–2022 model-level endpoint is unchanged; this does not map the same header to V6 models, unlisted trims or later years. Confirm exact emissions requirements and factory air-injection configuration before purchase or work.
| Years | Make | Model | Submodel | Required configuration |
|---|---|---|---|---|
| 2005-2015 | Toyota | Tacoma | Base | Gas L4 2.7L only; confirm exact emissions and original air-injection equipment. |
| 2005-2015 | Toyota | Tacoma | Pre Runner | Gas L4 2.7L only; confirm exact emissions and original air-injection equipment. |
| 2016-2022 | Toyota | Tacoma | SR | Gas L4 2.7L only; confirm exact emissions and original air-injection equipment. |
| 2016-2022 | Toyota | Tacoma | SR5 | Gas L4 2.7L only; confirm exact emissions and original air-injection equipment. |
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | 48-36018 |
| Product type | Headers & Manifolds |
| Construction | One 1-5/8-inch mandrel-bent 304 stainless header, 100% MIG welding, optimized tube lengths, formed collector and factory-style flanges. Tube gauge, flange thickness and separate flange alloy are not established by current selected primary/guide. |
| Formal bill | ONE header assembly 05-245497 and TWO M8 x 1.25 x 35 mm studs 05-46056. |
| Stud instruction conflict | The formal bill includes two new studs, but step 17 explicitly says to use the two FACTORY studs for the air-injection tube. Confirm correct selected stud usage with aFe before work; do not silently substitute or discard either specification. |
| Heatshield / support gap | Step 13 removes five heatshield bolts and the original heatshield, retaining hardware for reinstallation, but no later step actually states heatshield restoration. Step 6 removes the exhaust-manifold flange support bracket and reinstalls the lower of two bellhousing bolts; final bracket/remaining-bolt arrangement is not stated. Obtain aFe clarification before work; no complete disposition is invented. |
| Original equipment retained | Disconnect/reconnect negative battery, MAF and harness clips. Temporarily remove airbox/intake tube, A/C and air-pump brackets, and move the air-injection assembly after unplugging its connector, vacuum lines and hoses. Restore original air injection, hoses, gaskets, brackets, intake/filter/airbox and MAF wiring. |
| Selected guide | Two pages, all 29 steps, full bill and diagram; updated September 2026, headed 2005–2022 L4 2.7L. No numerical torque or fixed clearance is printed. Re-tighten all clamps/hardware after 50–100 miles. |
| Linked test at same rpm | 2020 Tacoma 2.7L at 3897 rpm: red 112.73 versus blue 109.57 hp, +3.16 hp; red 151.92 versus blue 147.79 lb-ft, +4.13 lb-ft. The current exact primary does not print a numerical gain claim. |
| Separate peaks / test limits | Red power peak 139.42 hp at 5360 versus blue 138.36 at 4970: +1.06 hp at different rpm. Torque peaks 155.96 versus 155.07 lb-ft: +0.89, peak rpm cropped/unprinted. Header run June 6, 2023 8:06:32 AM versus baseline April 24, 2023 12:20:52 PM; both SAE 1.00, smoothing 5, different weather. Header notes aftermarket AIS, OE exhaust, aFe headers, third gear, 2000-rpm start and 20% load; baseline modifications are not repeated, so no both-stock or identical-configuration assumption. |
| Original identifier | Existing GTIN 802959483961 is retained as recorded; no new or bundled GTIN is assigned. |
What's Included
- The 48-36018 kit includes one header assembly 05-245497.
- Two M8 x 1.25 x 35 mm studs 05-46056; confirm the bill-versus-factory-stud instruction conflict before installation.
- Original manifold and air-injection gaskets, exhaust spring bolts, air-injection system, intake, brackets and MAF wiring are reused/restored as directed. No new gasket, catalyst, intake filter or coupling is established as supplied.
About aFe Power
aFe manufactures automotive performance and replacement parts identified by exact part number, specifications, and published application data.
Related Parts
- Exact selected 2.7L header, construction and emissions restriction
- Complete selected 29-step guide, formal bill and diagram
- Manufacturer-linked 2020 Tacoma 2.7L dyno chart
- Full exact-MPN four-trim retailer table
- Shop headers and manifolds
- Shop aFe Power
FAQ
What is the 48-36018?It is one MIG-welded 304 stainless long tube header assembly for manufacturer-listed Toyota Tacoma 2005–2022 gas L4 2.7L, with the two studs in the formal bill. It is not a V6 pair or a catalyst-equipped replacement system.
Which Tacoma trims and engine are supported?The selected application requires gas L4 2.7L. The full named table supports Base and Pre Runner 2005–2015 and SR/SR5 2016–2022. Do not infer the same fit for V6 engines, other trims or later years.
Are the supplied studs used instead of the factory studs?That is unresolved in the selected guide: the bill lists two new studs, while step 17 specifies two factory studs for the air-injection tube. Confirm correct selected hardware with aFe before work.
Does the factory air-injection system return?Yes. The guide explicitly restores the tube/system using factory gasket/hardware, reconnects its plug and hoses, and restores the air-pump bracket. It also restores the intake, airbox/filter, MAF connector and wiring clips.
What happens to the heatshield and support bracket?The guide removes the heatshield and retains its bolts but omits a later restoration step. It removes the flange support bracket and restores the lower bellhousing bolt without specifying final bracket/remaining-bolt disposition. Obtain aFe clarification before work.
Does the kit include new gaskets or a catalyst?The formal bill lists only one header assembly and two studs. It calls for original manifold and air-injection gaskets and original exhaust hardware. No new catalyst, intake filter or coupler is established as supplied.
What torque and recheck interval are specified?No numerical torque is printed. Align the complete system before evenly tightening from the front using exact applicable service requirements. Re-tighten all clamps and hardware after 50–100 miles, as this guide specifically recommends.
What gain does the linked chart actually show?At 3897 rpm it shows +3.16 hp and +4.13 lb-ft. Separate peak differences are +1.06 hp and +0.89 lb-ft. The header run has an aftermarket intake, and baseline modifications are not repeated; no universal or both-stock gain is promised.
Installation Instructions
- Confirm aFe 48-36018 against the exact vehicle and installed equipment. Inventory the actual components and follow the selected manufacturer instructions and current vehicle service requirements.
- Confirm exact 2005–2022 Tacoma gas L4 2.7L application and emissions eligibility. Resolve new-versus-factory stud usage, final heatshield arrangement and support-bracket/bellhousing-bolt disposition with aFe before work. Read all 29 selected steps, cool and safely support the vehicle and original exhaust.
- Keep exhaust connections loose until complete for alignment. Disconnect the negative battery cable. Remove the factory exhaust-manifold flange support bracket and reinstall the lower of the two bellhousing bolts as directed; retain original exhaust springs and bolts. Do not invent final disposition of the remaining bracket/bolt.
- Unplug the MAF and release harness clips. Remove the original airbox/intake tube, A/C brackets and air-pump bracket, then the top intake tube and harness attachments. Unplug air injection, disconnect its two vacuum lines and two other hoses, remove its three top bolts and move the unit aside, retaining hardware.
- Remove the five heatshield bolts and original heatshield, retaining hardware. Remove the four air-injection nuts/system and eight manifold nuts, retaining hardware. Install the selected header with original manifold gasket and hardware. Confirm correct stud selection before attaching the air-injection tube: step 17 says factory studs, whereas the formal bill includes two new studs.
- Restore air injection with its factory gasket. Restore the top intake tube, all hoses, three top bolts, air-injection connector and air-pump feed hose. Restore A/C and air-pump brackets, airbox/filter/intake tube, then MAF connection and harness clips. Resolve the omitted shield/support final arrangement before operation.
- Connect to the original exhaust using retained factory hardware, reconnect the negative battery, align safe clearance from wires, hoses, brake lines, body and tires, then evenly tighten from the front to exact applicable service requirements. No numerical torque or fixed clearance is printed.
- After complete correct original-equipment reassembly, start/check/repair leaks and lower safely. Re-tighten all clamps/hardware after 50–100 miles. No V6 heat tape, sensor-transfer, catalyst-delete or unrelated torque procedure is substituted.
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