Inlet Heater Core Supply Hose Kit

Features:

• Fits 2020-2025 Silverado and Sierra HD
• Designed for 6.6L Duramax L5P
• Durable 5mm thick silicone construction
• Reinforced 4-ply hose design
• High heat resistant material
• Direct bolt-on installation
• No cutting or modifications required
• Includes stainless steel hose clamps
• Resists heat moisture and chemicals
• Replaces OEM hose GM 85056544
• Improves long term cooling system reliability

Upgrade Your Cooling System With Confidence Under The Hood

If you have ever dealt with a worn or brittle coolant hose, you already know how quickly it can turn into a bigger problem, and this PPE inlet heater core supply hose kit is built to prevent that headache. Designed for 2020-2025 Silverado and Sierra 2500HD and 3500HD trucks with the 6.6L Duramax L5P, this kit replaces a common wear item with something far more durable. The upgraded silicone construction holds up better under heat and pressure, which is exactly what your truck sees day in and day out. Additionally, this is a direct bolt-on setup, so you are not cutting or modifying anything just to get it installed. It is the kind of upgrade you can knock out in the garage and immediately feel better about when you fire the truck up. Whether you are towing, commuting, or putting your truck to work, having reliable coolant flow is critical. This kit helps you stay ahead of failures and keeps your cooling system working the way it should.

Engineered Silicone Construction For Long Term Duramax Reliability

The PPE 119020040 inlet heater core supply hose kit is built using 5mm thick 4-ply silicone, which offers improved durability over standard rubber hoses. This multi-layer construction is designed to handle elevated temperatures and pressure cycles common in diesel engine bays. Additionally, silicone material resists breakdown from heat, moisture, and chemical exposure, helping extend service life over time. The kit is designed as a direct replacement for OEM part number 85056544, ensuring proper fitment on 2020-2025 GM HD trucks equipped with the L5P Duramax. It includes stainless steel worm-drive clamps that provide a secure hold and resist corrosion in harsh environments. Proper hose integrity is essential for maintaining consistent coolant flow to the heater core, especially in demanding conditions. With this upgrade, you are reinforcing a key part of the cooling system with materials built to last.

Fitment: 2020, 2021, 2022, 2023, 2024, 2025 GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax L5P

Notes:

• Fits 2020-2025 GM 2500HD and 3500HD
• Designed for 6.6L Duramax L5P only
• Direct replacement for GM 85056544
• Direct bolt-on installation design
• No cutting or modifications required
• Includes stainless steel hose clamps
• Constructed from 4-ply silicone material
• Built for high heat engine environments
• Verify vehicle fitment before purchase
• Recommended for cooling system service upgrades