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StreetWires FB4

4-gauge firewall bushing

Item # 211FB4

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Discontinued item

Item # 211FB4

About the StreetWires FB4

Keep water out when you run power cable through your car's firewall. The StreetWires FB4 firewall bushing protects your 4-gauge power cable from wear and chafing, and provides a watertight seal when it's tightened down. Lifetime warranty.

What's in the box:

  • Threaded bushing shaft
  • Cap
  • Nut

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More details on the StreetWires FB4

Mark G.

Product Research


General Description: The StreetWires firewall bushing is a three piece design; the threaded shaft loads through the firewall, a rounded cap screws on from one side and a nut from the other. A watertight seal is created as the ends are tightened. Your wire will be protected from metal jagged edges and moisture.

Available Sizes and Dimensions: The StreetWires firewall bushings are available in three sizes.

8-Gauge Firewall Bushing:

  • Cut-Out Diameter: 0.58"
  • Shaft Length: 1.159"
  • Inner Hole Diameter For Wire: 0.25"

4-Gauge Firewall Bushing:

  • Cut-Out Diameter: 0.88"
  • Shaft Length: 1.275"
  • Inner Hole Diameter For Wire: 0.5"

1/0 Gauge Firewall Bushing:

  • Cut Out Diameter: 1.105"
  • Shaft Length: 1.588"
  • Inner Hole Diameter for Wire: 0.75"

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