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Upper Coolant Tube for 2017-2025 L5P 6.6L Duramax Chevy/GMC 2500HD/3500HD Coolant Pipe Kit | SPELAB

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Selected Variant SKU: SPBVL0001008
Regular price $149.00
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Upper Coolant Tube for 2017-2025 L5P 6.6L Duramax Chevy/GMC 2500HD/3500HD Coolant Pipe Kit | SPELAB

The SPELAB Upper Coolant Tube is a premium upgrade designed to replace the factory plastic and rubber upper radiator hose on your 2017–2025 L5P Duramax. Built from high-grade 6061 aluminum with heavy-duty multi-ply silicone couplers, this system eliminates the failure-prone OEM parts and delivers long-lasting durability, clean aesthetics, and improved cooling reliability under heavy load or tuned conditions.

Upper Coolant Tube  For 2017-2025 L5P Duramax Coolant Pipe Kit  | SPELAB

Upper Coolant Tube Key Features

  • 6061-T6 Aluminum Construction
    Mandrel-bent aluminum tubing resists heat, pressure, and aging far better than OEM rubber.
  • CNC-Machined Thermostat Housing & Radiator Adapter
    Ensures a perfect leak-free connection and long-term durability.
  • Powder-Coated Finish (Multiple Colors Available)
    Durable, corrosion-resistant coating adds a premium look to your engine bay.
  • Direct Bolt-On Installation
    No cutting or fabrication required — designed as a direct replacement for your factory upper coolant tube assembly.

L5P Upper Coolant Tube Specification

Material  6061-T6 Aluminum Construction & Silicone
Weight 1.5 kg
Installation  Engine block or thermostat housing to the upper radiator section

What's in the BOX?

  • 1 × Aluminum upper coolant tube
  • 2 × Silicone couplers
  • 4 × Stainless steel T-bolt clamps