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USD 12.99 12.99 49.99
Part #:

Daystar KU2004XBK Firewall Boot

Universal - Many Applications
Part #:
FROM 12.99
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Throw away those leaky rubber grommets! Daystars Firewall Boot is the BEST way to run wires, hoses, and other lines through your vehicles firewall. Simply drill a 1.25 diameter hole in the firewall and install the boot. Run your wires, trim the boot as necessary, and secure the assembly with a zip tie. Its that easy!


  • Safely and cleanly run wires through firewalls and bulkheads
  • Protects wires from sharp edges
  • Eliminates air / water leaks
  • Prevents wire chaffing and shorts
  • Fits a variety of wire thicknesses and bundles from 3/8 to 1
  • Works great for tubing and air lines, too!
  • 1.25 diameter hole required for installation.
  • A must have for lighting and gauge installations!

Product Options

KU20040BK Single
KU20041BK 5 Pack


  • Manufacturer Name Daystar
  • Shipping Weight 1.00 lb.
  • Shipping Length 29 in.
  • Shipping Width 7 in.
  • Shipping Height 48 in.
  • Fuel Type Diesel / Gas
  • Warranty Yes
  • Warranty Info Limited Lifetime
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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Most Popular Questions

What is the large end outside diameter of the grommet? I would like to use this product in a 1 and 7/16 hole. what is the outside diameter of the large end of the grommet?
View Staff Answer 
To install the DAYSTAR KU2004XBK FIREWALL BOOT a 1.25” diameter hole must be drilled.