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Silver Bullet spacer for exact engine and intake requirements
The aFe 46-38003 Silver Bullet spacer is for the listed Toyota 2.4L/2.7L four-cylinder engines. Two gaskets seal the spacer and two 25mm spacers reposition the air cleaner; these are not throttle-body dimensions.
Key Features
- 6061-T6 billet-aluminum serrated/helix entry design; claimed turbulence and reduced whistle do not guarantee an improvement on every setup.
- 6061-T6 billet aluminum with serrated/helix entry.
- Requires removal of original intake-manifold studs; retain them for possible return to stock.
- Manufacturer whistle, power and response statements are design claims rather than guaranteed results.
Fitment
| Years / source scope | Model | Exact requirements |
|---|---|---|
| 1995–2004 | Toyota Tacoma | 2.4L or 2.7L four-cylinder |
| 1996–2000 current page | Toyota 4Runner | 2.7L four-cylinder; no V6 |
| 1996–1998 | Toyota T100 | 2.7L four-cylinder |
46-38003: The current exact page lists 4Runner through 2000, while the older manual prints 2002. Existing 1996–2000 coverage is retained and no 2001–2002 extension is made. Both the exact manual and read EO D-550-17 start the 2.7L T100 at 1996, so the earlier 1994–1995 portion is removed. Existing named Tacoma trims remain engine-conditional; this is not blanket coverage of V6 versions.
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | 46-38003 |
| Material / design | 6061-T6 billet aluminum; serrated/helix entry |
| Engine / application | See exact engine-specific fitment table and source qualifications |
| Sealing arrangement | Use one supplied gasket on each side of the spacer. Its engraved face points toward the throttle body. |
| Throttle-body fastening | Throttle-body M8 screws: 15 ft-lb. Air-cleaner M6 screws: 12 ft-lb. Do not apply the throttle-body value to both connections. |
| Emissions scope | The page cites D-550-11 / D-550-17. The read D-550-17 lists exact Tacoma/T100 applications; it does not establish the 4Runner exemption under that order. Full exemption for every listed vehicle is not certified. |
What's Included
- One Silver Bullet spacer and two gaskets
- Four M8 x 60mm screws and four M8 flat washers
- Two 25mm air-cleaner mounting spacers
- Two M6 x 35mm screws and two M6 flat washers
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
- Browse aFe Power by exact engine and installed intake; shared brand membership does not establish compatibility.
- Use the exact spacer, seal and fastener list; do not substitute another spacer from a broad model title.
Frequently Asked Questions
What is the 46-38003?A model- and engine-specific Silver Bullet throttle-body spacer, not a complete intake or replacement throttle body.
Does it include a filter or coupling?The exact parts list below governs. Generic manufacturer page fields do not establish a supplied intake filter or coupling for this spacer.
Are gains guaranteed?No. Turbulence, throttle-response and whistle statements are manufacturer design claims, not guaranteed horsepower, fuel-economy or sound results for the actual engine.
Which sealing parts are used?Use one supplied gasket on each side of the spacer. Its engraved face points toward the throttle body.
What is the correct torque?Throttle-body M8 screws: 15 ft-lb. Air-cleaner M6 screws: 12 ft-lb. Do not apply the throttle-body value to both connections.
Are all original search rows certified?The current exact page lists 4Runner through 2000, while the older manual prints 2002. Existing 1996–2000 coverage is retained and no 2001–2002 extension is made. Both the exact manual and read EO D-550-17 start the 2.7L T100 at 1996, so the earlier 1994–1995 portion is removed. Existing named Tacoma trims remain engine-conditional; this is not blanket coverage of V6 versions.
Can another spacer’s instructions be substituted?No. Gaskets, O-rings, brackets, screw sizes, control cables and intake restrictions differ by exact part number.
Does the EO reference cover every application?The page cites D-550-11 / D-550-17. The read D-550-17 lists exact Tacoma/T100 applications; it does not establish the 4Runner exemption under that order. Full exemption for every listed vehicle is not certified.
Installation Instructions
- Read the exact manufacturer instructions for 46-38003, verify the actual engine, intake, hardware and applicable emissions scope before removal.
- Unbolt the air-cleaner assembly from its engine mount, release its throttle-body clamp and remove the assembly.
- Remove the throttle-body nuts and bolts and slide the body from the manifold studs. Remove and retain those studs; they are not used in this installation.
- Place a gasket on each side of the spacer, engraved face toward the throttle body. Secure with the supplied M8 x 60mm screws and M8 flat washers; tighten to 15 ft-lb.
- Restore the air cleaner and its throttle-body clamp. Position the two 25mm spacers between the air-cleaner assembly and engine mounting bracket.
- Secure the air-cleaner mounting with the supplied M6 x 35mm screws and M6 washers, tightening to 12 ft-lb. Check connections and the exact application-specific EO requirements.
46-38003: installation details and any unresolved source scope must be matched to the actual vehicle before use.
California Proposition 65 Warning
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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