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Holley LS Steam Tube Kit w/Speed Flex

Holley LS steam tube kit with braided stainless Speed-Seal hose, zinc plated steel hose ends, and adjustable steam vent adapters for the front outlets on the engine.

Part # 26-551 Be the first to write a review

Holley LS Steam Tube Kit w/Speed Flex

Estimated Ship Date: 08/29/2025
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MSRP $187.95
$150.25
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Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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Steam Vent Adapters & kits. They are designed to eliminate trapped air and steam from your engine to prevent hot spots or overheating. The complete kits are available to plumb your LS engine and include the appropriate hose and hose ends to make installation a breeze. These kits are more attractive than the OE (Original Equipment) rigid hard lines and provide flexibility when using aftermarket intakes and other accessories on performance vehicles.

Features:

  • Eliminates trapped air, hot spots, and overheating
  • Custom look for LS engines - More attractive than OE hard lines
  • Adjustable pivoting steam vent adapters
  • Complete kits w/black push-on or stainless braided speed-flex hose & hose ends
  • Available in front or four corner pumbing options

About Holley

Holley Performance Brands is the undisputed leader in carburetors, fuel pumps, fuel injection, intake manifolds, fuel injection, and fuel systems.

Adapter TypeLS Steam Tube Vent Adapter
Brand Holley
CategoryBelts and Cooling
Emission Code5
Hose Size3 AN
Part TypeEngine Coolant Crossover Pipe Kit
Product TypeLS Steam Tube Vent Adapter
Sub CategoryHoses and Pipes
UPC090127741245
Part Number26-551
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This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
This kit provides the adapters and hose to connect to the front steam outlets on the cylinder heads only. Use two GM OE steam tube block-off plugs (GM # 12602540) on the rear of the cylinder heads.
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    Some parts are not legal for use in California or other states with similar regulations.