Orders may be delayed due to out-of-stock items. We will contact you with updates and Thank You for your patience. Ph. 951-493-7100 ×

Silver Bullet Throttle Body Spacer

BMW 325i (E46) 01-06 L6-2.5L (M54)
Part Number: 46-31008

MSRP: $236.36


Silver Bullet throttle body spacers unique design create turbulent air flow to increase performance and improve throttle response.

  • CNC-Machined from Durable 6061-T6 Billet Aluminum
  • Unique Serrated/Helix Entry Design Creates Turbulence and Reduces Whistle Sound
  • Increases Air Speed, Improving Performance and Throttle Response
Read More

Silver Bullet throttle body spacers create turbulence in the air flow just prior to entry into the engine increasing horsepower, torque and improving throttle response. Silver Bullet throttle body spacers are constructed out of durable 6061-T6 billet aluminum and use a unique serrated/helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix-only throttle spacers.

Serrated/Helix Design:
The Serrated/Helix combination design creates intake turbulence in the combustion chamber. This turbulence breaks up the fuel which creates a more complete combustion cycle increasing horsepower, torque and improving throttle response. The Serrated/Helix combination design also reduces intake whistle that occurs with helix-only designs.

6061-T6 Billet Aluminum Construction:
All Silver Bullet Throttle Body Spacers are constructed from 6061-T6 billet aluminum precision machined for light weight, high strength and perfect fit and finish.

Longer Intake Track:
Adding a Silver Bullet Throttle Body spacer lengthens the intake track which helps increase intake air speed, performance and improve throttle response.

In recent dyno testing, this throttle body spacer produces up to 10hp and 14lbs. x ft. torque on the popular E46.

Emissions Disclaimer:
Some or all of the applications listed are 50-state exempt, please see CARB EO# D-550-11 for details.


Vehicle Applications

Year Make Model SubModel Engine Fuel
2001-2006BMW 325Ci L6 2.5L Gas
2001-2005BMW 325i L6 2.5L Gas
2001-2005BMW 325xi L6 2.5L Gas
Reviews (1)

Customer Reviews (1)

Overall average

Average Ratings By Category:

  • Quality
  • Value
  • Easy Install

1 Item(s)

Noticed a huge difference in performance. Great quality part. Definitely recommend it to anyone with an e46.
I did alot of research on throttle body spacer for my e46 before purchasing this one. Before purchasing, people had said that "a spacer wont make a difference on an electronic throttle body." My thoughts were going both ways, honestly. I found one review on a bmw forum that made me finally purchase this one. He had a stock e46 325i with a drop in k&n filter and notice huge differences. (I already had a k&n c.a.i. and an undersrive pulley kit from turner motorsports)
Getting into it. - Getting down to the throttle body didnt take long, 30mins or so (granted i have a k&n c.a.i.) once off putting the spacer in with the throttle body took about 20mins. Getting the boot back on was probably the longest thing i delt with.
Once i got everything back together and started the car, there was a noticable difference. It was smoother and a bit quieter. I took it for good drive to let everything set in and it was noticably quicker, smoother and felt better than before.
I definitely recommend this product to any enthusiasts trying to get a little more kick out of there e46. Great product!
  • Quality
  • Value
  • Easy Install
Review by Tyler / Posted on 1/4/2019
Spare Parts

Please wait...

Item has been added to your shopping cart

Keep Shopping

View Shopping Cart

Item has been removed from your shopping cart

Keep Shopping

View Shopping Cart