Upper Coolant Pipe for 2011-2016 LML 6.6L Duramax Radiator Pipe | SPELAB
---tab Description---
Upper Coolant Tube For 2011-2016 LML 6.6L Duramax Coolant Pipe Kit
The SPELAB Upper Coolant Tube is a premium upgrade designed to replace the factory plastic and rubber upper radiator hose on your 2011–2016 LML 6.6L 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.
LML 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.
Upper Coolant Tube Specification
| Material | Â 6061-T6 Aluminum Construction & Silicone |
| Weight | 1.5 kg |
| Installation | Â 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
---tab Fitment & FAQ---
This Upper Coolant Tube Fit:
- 2011-2016 LML 6.6L Duramax Diesel GMC Sierra 2500 HD
- 2011-2016 LML 6.6L Duramax Diesel GMC Sierra 3500 HD
- 2011-2016 LML 6.6L Duramax Diesel Chevrolet Silverado 2500 HD
- 2011-2016 LML 6.6L Duramax Diesel Chevrolet Silverado 3500 HD
FAQS
- Why should I upgrade my 2011-2016 LML Duramax to an aluminum upper coolant tube?
- The factory upper radiator hose on LML engines uses failure-prone plastic and rubber components. SPELAB's 6061-T6 aluminum tube eliminates these OEM weaknesses, providing superior durability and reliability under heavy load or tuned conditions.
- Is this kit compatible with Silverado and Sierra 2500HD/3500HD trucks?
- Yes, this kit is specifically engineered for 2011-2016 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L LML Duramax Diesel engine.
- Does the SPELAB LML coolant pipe require any modifications for installation?
- No, this is a direct bolt-on replacement. It utilizes CNC-machined thermostat housing and radiator adapters to ensure a perfect, leak-free fit without any cutting or fabrication required.
- What are the benefits of the mandrel-bent aluminum construction?
- Mandrel-bent aluminum tubing maintains a consistent diameter throughout bends, which reduces flow resistance and withstands heat and pressure far better than standard rubber hoses, helping to prevent major engine failures.
- Can this modification help reduce engine operating temperatures?
- Yes, by replacing the restrictive factory hose with high-grade aluminum tubing, this modification can help improve cooling efficiency and potentially reduce engine operating temperatures by approximately 20–25°F (11–14°C) under heavy use.
---tab Blog & Video---
Video about LML Upper Coolant Tube
Reduce engine operating temperature through modifications (by approximately 20–25°F ≈ 11–14°C)!
Quickly upgrade your cooling system
OE = Weakness → Aluminum Coolant Tube = Improved reliability + Prevention of major failures
---tab Shipping & Returns---
Fast Shipping Policy
Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date. Click for Shipping Policy
Easy Return Policy
Every order comes with a 14-day free return, which means you don't have to pay for a return slip. Click for Return Policy
Original: $139.00
-65%$139.00
$48.65Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
---tab Description---
Upper Coolant Tube For 2011-2016 LML 6.6L Duramax Coolant Pipe Kit
The SPELAB Upper Coolant Tube is a premium upgrade designed to replace the factory plastic and rubber upper radiator hose on your 2011–2016 LML 6.6L 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.
LML 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.
Upper Coolant Tube Specification
| Material | Â 6061-T6 Aluminum Construction & Silicone |
| Weight | 1.5 kg |
| Installation | Â 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
---tab Fitment & FAQ---
This Upper Coolant Tube Fit:
- 2011-2016 LML 6.6L Duramax Diesel GMC Sierra 2500 HD
- 2011-2016 LML 6.6L Duramax Diesel GMC Sierra 3500 HD
- 2011-2016 LML 6.6L Duramax Diesel Chevrolet Silverado 2500 HD
- 2011-2016 LML 6.6L Duramax Diesel Chevrolet Silverado 3500 HD
FAQS
- Why should I upgrade my 2011-2016 LML Duramax to an aluminum upper coolant tube?
- The factory upper radiator hose on LML engines uses failure-prone plastic and rubber components. SPELAB's 6061-T6 aluminum tube eliminates these OEM weaknesses, providing superior durability and reliability under heavy load or tuned conditions.
- Is this kit compatible with Silverado and Sierra 2500HD/3500HD trucks?
- Yes, this kit is specifically engineered for 2011-2016 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L LML Duramax Diesel engine.
- Does the SPELAB LML coolant pipe require any modifications for installation?
- No, this is a direct bolt-on replacement. It utilizes CNC-machined thermostat housing and radiator adapters to ensure a perfect, leak-free fit without any cutting or fabrication required.
- What are the benefits of the mandrel-bent aluminum construction?
- Mandrel-bent aluminum tubing maintains a consistent diameter throughout bends, which reduces flow resistance and withstands heat and pressure far better than standard rubber hoses, helping to prevent major engine failures.
- Can this modification help reduce engine operating temperatures?
- Yes, by replacing the restrictive factory hose with high-grade aluminum tubing, this modification can help improve cooling efficiency and potentially reduce engine operating temperatures by approximately 20–25°F (11–14°C) under heavy use.
---tab Blog & Video---
Video about LML Upper Coolant Tube
Reduce engine operating temperature through modifications (by approximately 20–25°F ≈ 11–14°C)!
Quickly upgrade your cooling system
OE = Weakness → Aluminum Coolant Tube = Improved reliability + Prevention of major failures
---tab Shipping & Returns---
Fast Shipping Policy
Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date. Click for Shipping Policy
Easy Return Policy
Every order comes with a 14-day free return, which means you don't have to pay for a return slip. Click for Return Policy
