SKU: SD-RADTUBE-6.7C-19-HO Sinister Diesel Radiator Pipe for 2019-2020 Dodge Cummins 6.7L (High Output Engine)

Sinister Diesel Radiator Pipe – 2019–2020 Ram 3500 High Output Cummins

⚠️ High Demand – Restock in Progress
This item is moving fast and currently out of stock—we’re working to get more on the shelf.
Estimated ship date: 6/29/26
Orders ship first-come, first-served, and we’ll get yours out as quickly as possible.
Expedited shipping applies after shipment and does not move your order ahead in line.
We truly appreciate your patience and support—it means a lot to us.

Fitment Note
Fits 2019–2020 Ram 3500 6.7L High Output Cummins engines only

Key Features
• Upgraded Radiator Pipe – Replaces failure-prone factory coolant tubing
• 6061 Aluminum Construction – Strong, crack-resistant, and built for long-term durability
• Mandrel-Bent Tubing – Precision-formed for proper fitment and smooth coolant flow
• 4-Ply Silicone Boots – High-strength boots rated to 400 PSI for durability under pressure and heat
• Stainless Steel Hose Clamps – Maintains a secure, leak-free seal
• Sinister Blue Powder Coat – Corrosion-resistant finish with a clean, aggressive appearance
• Direct Bolt-On Installation – No cutting or modifications required
• 2-Year Warranty – Backed for quality and reliability

Product Overview
The Sinister Diesel Radiator Pipe for the 2019–2020 Ram 3500 High Output Cummins is designed to replace the weak factory upper coolant tube with a stronger, more reliable solution built for the demands of high-output diesel performance.

Factory coolant hoses and plastic-style tubing are prone to cracking, abrasions, and fatigue over time—especially in high-heat engine bays and heavy towing applications. This upgraded radiator pipe eliminates those weak points with durable 6061 aluminum tubing and high-strength silicone boots designed to withstand years of heat and pressure without deterioration.

Precision mandrel bends ensure a proper factory-style fit while maintaining smooth coolant flow throughout the cooling system. Combined with stainless steel clamps and extra-thick 4-ply silicone boots rated at 400 PSI, this setup delivers a secure, dependable seal built for towing, hauling, and daily driving.

Finished in Sinister Blue powder coat, this radiator pipe not only improves long-term reliability but also adds a clean, custom appearance under the hood. Even the silicone boots feature the Sinister Diesel logo for a finished look throughout the engine bay.

Installation is straightforward with a direct-fit design requiring no cutting or modifications.

What’s Included
(1) Aluminum Radiator Pipe
(2) 4-Ply Silicone Boots
(4) Stainless Steel Hose Clamps

Why Choose Sinister Diesel
Since 2009, Sinister Diesel has been focused on building parts that solve factory weak points and improve real-world reliability. Our cooling system upgrades are engineered for stronger construction, long-term durability, and dependable performance when your truck needs it most.