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HOLLEY LS Steam Tube Kit

HOLLEY LS Steam Tube Kit

Original price was: £241.76.Current price is: £229.68. Inc. VAT

SKU: HOL26-550 Categories: , , Brand:

Description

Part Number: 26-550

Holley LS Steam Tube Kit – Front Location (Black Finish)

Engineered to eliminate trapped air pockets and localized overheating in GM Gen III and Gen IV LS engines, the Holley 26-550 front steam vent kit provides high-performance cooling circuit protection with an upgraded, sleek motorsport aesthetic.

Key Features & Performance Benefits

  • ☑ Hot Spot Elimination: Safely bleeds air trapped in cylinder head steam passages to prevent localized engine hot spots and severe overheating.
  • ☑ Adjustable Vent Adapters: Includes pivoting steam vent adapters for versatile, hassle-free hose routing around aftermarket intake manifolds and accessories.
  • ☑ Premium Black Finish: Features black push-on hose with anodized black aluminum hose ends for a clean, professional engine bay presentation.
  • ☑ Front Port Plumbing: Designed specifically for front cylinder head steam outlet locations on GM LS-series V8 engines.
  • ☑ Aftermarket Compatibility: Provides superior clearance and aesthetic flexibility over restrictive OEM rigid steel steam lines.

Technical Specifications


Brand Holley Performance
Manufacturer Part Number 26-550
Adapter Type LS Steam Tube Vent Adapter Kit
Plumbing Configuration Front Outlets Only
Engine Compatibility GM Gen III / Gen IV LS Series V8
Hose Type Black Push-On Hose
Fitting Finish Anodized Black Aluminum
Emission Code 5

What’s Included in the Box

  • 2x Holley Adjustable Pivoting Steam Vent Block Adapters (Black)
  • 1x High-Performance Black Push-On Hose Segment
  • Black Anodized Aluminum Hose Ends & Fitting Hardware
  • Mounting Bolts and O-Rings / Seals

Holley Performance products represent the gold standard in American V8 plumbing and engine management. When building or swapping an LS powertrain, ensuring proper steam vent operation is vital to long-term engine survival. At JP Racing, we maintain full UK stock of official Holley components, backed by rapid dispatch, expert technical assistance, and dedicated customer support across the UK and Europe.

Frequently Asked Questions

LS engine cylinder heads feature top steam vents where air pockets accumulate. If not properly vented back to the radiator or expansion tank, trapped air causes localized cylinder head hot spots, risking head gasket failure and detonation. The Holley 26-550 kit safely bleeds steam to protect your engine.

No, part number 26-550 is specifically configured for front-location cylinder head steam outlets. If your intake manifold clearance requires blocking the rear ports, standard LS steam vent block-off plugs can be used at the rear while this kit plumbs the front outlets.

The outlet hose should be routed to a designated steam port on your radiator, an external expansion header tank, or spliced into the upper radiator hose/water pump inlet line above the level of the cylinder head steam vents to ensure continuous air bleeding.

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