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aFe Silver Bullet Throttle Body Spacers Throttle Body Spacer - For Use With Factory Intake - 46-38004

By aFe
61 Reviews
$156.25
List Price
$125.00
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Select your vehicle:
Features:
  • Part #: 46-38004
Have a Question? Ask a product expert!
Features:
  • Increases horsepower and torque by thoroughly mixing your air/fuel charge
  • Designed to fit your make, model and year
  • Combination serrated/helix design creates turbulence for complete fuel burn
  • Serrated entry reduces wind noise
  • Crafted from solid billet aluminum
  • Straightforward installation with included hardware
  • Available only for vehicles with dyno-proven torque and horsepower gains
  • 2-year warranty
Description:

Super-charge your combustion chamber with a throttle body spacer that keeps quiet. The aFe Silver Bullet Throttle Body Spacer increases torque and horsepower without obnoxious whistling. Its highly-effective construction creates power-producing turbulence for the ideal air-fuel mixture and optimal burn.

With aFe Throttle Body Spacers, you can have your cake and eat it too. While a combination helix design boosts performance, the Silver Bullet's serrated entry reduces wind noise.

The aFe Silver Bullet Throttle Body Spacer is crafted from solid billet aluminum and specifically made for your vehicle's make, model and year. And, it's easy to install with straightforward instructions and included hardware. 2-year warranty.

Notes:
Average Rating
Appearance
Ease of Installation
Price/Value
Quality
61 Customer Reviews
5 Star
27 (44%)
4 Star
22 (36%)
3 Star
6 (10%)
2 Star
3 (5%)
1 Star
3 (5%)

Easy upgrade for an I'm price

Put this on my F150 Ecoboost. Kind of difficult to put on without disconnecting the hose going into the throttle body because it blocks the nuts. Aside from that a pretty simple upgrade especially if you combine it with the AFE intake. I'm loving the combo of this and the Magnum Force intake. Noticeable power increase and fuel economy is better. Seems a little overpriced for no more than it truly does but compared to a lot of performance upgrades, not too bad.
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Posted By Keith N (DURANT, OK) / November 22, 2017
2015 Ford F-150
Yes
No

Throttle Body Spacer

I have had these before on V8 engines and did not notice much improvement. However on my V6 Tacoma the low end torque is much better and throttle response seems more crisp. It does seem like MPG is a little better as well.
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Posted By Anthony S (Grand Lake , CO ) / October 7, 2017
2016 Toyota Tacoma
Yes
No

Loud high pitched whistle

I did research before purchasing this product. Some people said throttle body spacers give off a slight whistle at times, but I was not expecting this. It's loud and high pitched. I will end up taking it off and trying to sell it. Sorry, I really wanted it to work out.
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Posted By Aaron A (Wauwatosa, WI) / June 29, 2017
2011 Ford F-350
Yes
No

its great for my 04 ranger

it was crazy how easy t was i bought the afe cold air intake an the throttle body spacer had my original off an these but on within like 50 min. they have a huge horse power gain i can feel. an a great whistle.
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Posted By benjamin h (ANDERSON, IN) / July 9, 2016
2004 Ford Ranger
Yes
No

Wouldn't recommend it

Easy install installed it last week I already took it off !!! It makes a very loud and annoying whistle did notice a little extra go when I stepped on the gas
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Posted By John L (LA MIRADA, CA) / April 20, 2016
2012 Dodge Ram
Yes
No

aFe Silver Bullet Throttle Body Spacer

This works as advertised. I noticed an immediate difference in throttle response without the whistle. (my wife has not complained so it must not be making any objectionable noise) I have tracked a 1.2 mpg increase on two long trips now.
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Posted By John T (Fairfax, VA) / February 18, 2016
2014 Dodge Ram
Yes
No

Dose exactly what it was meant to do

Quick shipping. Great product. Easy insulation. What can I say you guys have came through again as usual. Thanks
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Posted By james C (GILBERT, WV) / November 25, 2015
2014 Dodge Ram
Yes
No

It's not about HP. It's about throttle response.

I was pleasantly surprised by how easy it was to install. It does whistle when you step on the throttle but I do feel more response when I hit the gas. To me it kinda sounds a bit like a turbo. Overall, I think it's worth the money. Keep in mind I also have the AFE cold air intake to go with it. I haven't seen a difference in the MPG's but it's only been on my truck for about a week.
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Posted By Brent O (ORANGE CITY, FL) / October 15, 2015
2016 Toyota Tacoma
Yes
No

Spend your money elsewhere

This thing doesn't do anything but whistle. Spend your money on a cold air intake or intake manifold spacer if you want a bit of extra torque and horsepower. I put on the cold air first so I know for a fact that if where the power came from. Absolutely no change after installing this expensive paperweight.
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Posted By Luke O (Seattle, WA) / July 30, 2015
2006 Toyota 4Runner
Yes
No

Doesn't worth

Didn't notice any chance in power or fuel, doesn't worth the paper.
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Posted By ABDULRAHMAN A (WAKRAH, WAKRAH) / November 10, 2014
1992 Jeep Wrangler
Yes
No

Nothing Special

CAI and Borla exhaust made a significat impact that was noticeable. The only thing I noticed was a whistle sound. 8hp is hard to feel and I didn't feel it.
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Posted By Roger M (ALBUQUERQUE, NM) / November 3, 2014
Yes
No

2014 silverado

Good throttle response, works great
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Posted By ROBERT S (INVERNESS, FL) / October 28, 2014
2014 Chevy Silverado
Yes
No

Whistler

I have not noticed any performance or mpg gains as of yet. I have had 2 guy's ask me if I had a supercharger or a turbo on my hemi do to the whistle effect from this spacer. It was a very simple and fast installation and as usual fast shipping from AA.
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Posted By Perry G (WESTMINSTER, MD) / July 2, 2014
2013 Dodge Ram
Yes
No

turbo

Installed on a 2011 Tundra and now you would think i have a turbo installed. The truck whistles at about 1 3/4 rpm and continues until about 3 1/2 rpm. I have a flowmaster 50 series dual stainless exhaust and a AFE Pro Dry Sealed CAI. The truck pulls hard and sounds. Smooth. Running 275/70/18 BFG TA KO tire I'm getting 16.2mpg highway and 13.5 to 14 daily driving. If you don't mind the whistle of a turbo you will like this upgrade
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Posted By Chad B (Waldoboro, ME) / June 28, 2014
2011 Toyota Tundra
Yes
No

Great product

I can notice extra torque and slight power when I press on the gas I added it along with a airaid cold air intake the two together work pperfectly.
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Posted By Jack S (Mission , TX ) / June 2, 2014
2014 Chevy Silverado
Yes
No

Nothing special

Sounds decent couldnt really feel the diference in power looks good and really easy to install overall your paying for the hissing sound
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Posted By Jose R (FRESNO, CA) / March 10, 2014
2012 Toyota Tundra
Yes
No

great

Great response on the pedal Noticed the difference
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Posted By Frank L (Laredo, TX) / January 29, 2014
Yes
No

Great Product

After installing I have found that I have better throttle response and more power. Highly recommend this product.
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Posted By Greg M (Concord, CA) / December 26, 2013
2004 Ford F-150
Yes
No

does nothing

No change in feel, mpg, power. Useless on fuel injected cars.
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Posted By Anthony L (Sinking Spring, PA) / November 27, 2013
2014 Ford Explorer
Yes
No

AFE TBS

All expectations were met. Did feel some more HP and torque. So far so good.
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Posted By Lawrence B (ANCHORAGE, AK) / November 6, 2013
2013 Chevy Silverado
Yes
No

aFe TB Spacer

Installed on a 2006 BMW X5 (e53) 4.8iS, very straightforward instructions, minimal tools need (10mm socket), half hour install time. Definitely smoothed out idol, and acceleration, mpg improvement!
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Posted By Steve C (Lorton, VA) / October 2, 2013
2006 BMW X5
Yes
No

low rpm power

seems to help power at low rpm considering mass air sensor and maybe throttle body upgrade
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Posted By Terry S (LAS VEGAS, NV) / September 15, 2013
2000 Chevy Silverado
Yes
No

Good product

Very easy to install, good quality and definitely got 1&1/2 to 2 mi. per gallon more. None of that loud whistle noise either.
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Posted By Oscar C (MILFORD, NH) / September 5, 2013
2005 GMC Sierra
Yes
No

Looks and sounds cool on 2013 ford 6.2

I had previously read that the instructions provided were terrible...and they sucked but its way to easy to install so you really dont need them. The spacer looks cool and like all other afe products the quality is there, my only complaint is the gasket, the diameter of the inner cut is to small it interferes with what the spacer is suppose to do. After shaving some gasket off; the piece just bolts on and despite everyone arguing that it does nothing I noticed better acceleration and 1 mpg
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Posted By Nicolas G (EL PASO, TX) / September 3, 2013
1976 GMC Jimmy
Yes
No

2011f150.

I'm loving the addition of the throttle body spacer... have been adding more and more power to my 5.0 and this worked out great. ..I am loving the power it gives my truck. . Cant wait to take it on a road trip. .. Works great with my 24s
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Posted By bernaldo s (HOUSTON, TX) / July 24, 2013
2011 Ford F-150
Yes
No
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