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Basalt-Silica Exhaust Pipe and Catalytic Converter Heat Shield

[Part # HS3-330-145B]

$79.90 Free Shipping Details

This heat shield is designed to insulate surrounding components from exhaust pipe and catalytic converter heat and to prevent injury from accidental contact. We recommend using this shield to protect Improved Racing oil cooler adapters from radiant exhaust heat that could affect oil temperatures. It can also be used to shield transmissions and differentials from exhaust heat.

The shield is designed to be installed in two possible orientations, allowing it to be used with smaller diameter pipes of approximately 1.75"-3.00"(44.5-76.2mm) OD or larger pipes such as header collectors and catalytic converters of approximately 4"-7" (105-178mm) OD. On smaller pipes, the overall length of the shield is 13" (330mm). In the larger pipe orientation, the overall length is 5.7" (145mm).

The exterior layer is manufactured from basalt fabric (also known as "lava rock") and has a maximum continuous operating temperature of 700-900°C (1,292-1,652°F). The shield is stuffed with ceramic fabric for insulation and the inner layer is made from silica fabric, which has a maximum operating temperature of 1,000-1,350°C (1,832-2,462°F).

The kit includes worm clamps in two different sizes as well as 190mm (7.5") max OD stainless steel zip ties to accommodate most pipe sizes.


  • Designed to fit 4" to 7" (105mm to 178mm) OD pipes with a 5.7" (330mm) length or 1.75"-3.00" (44.5-76.2mm) OD pipes with a 13" (330mm) length
  • Overall dimensions: 5.7" x 13" (145mm x 330mm)
  • Includes two 155-178mm stainless steel worm clamps, four 33-57mm stainless steel worm clamps, and four 190mm max OD stainless steel zip ties
  • Construction: Basalt fabric outer layer, ceramic insulation, silica inner layer, stainless steel clips and rivets
  • Operating temperatures:
    • -54°C (-65°F) minimum continuous
    • 1,000°C (1,832°F) maximum continuous
    • 1,350°C (2,462°F) maximum intermittent
  • Non-flammable

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