Sinister Diesel® SD-DC-6.7P-20 - Coolant Reservoir (Degas) Cap

Features

• CNC-Machined T6-6061 Billet Aluminum Construction – Precision machined for superior strength and durability
• Direct Replacement for the Factory Degas Cap – Installs in minutes using the factory reservoir
• Maintains Factory 21 PSI Pressure Rating – Engineered to meet factory cooling system specifications
• Precision Sealing Surface – Helps maintain proper cooling system pressure for reliable operation
• Laser-Etched Sinister Diesel Logo – Premium appearance that won't fade over time
• Signature Sinister Blue Finish – Adds a clean, custom look to your engine bay
• 1-Year Warranty – Backed by Sinister Diesel for quality and craftsmanship

Product Details

Coolant Reservoir (Degas) Cap by Sinister Diesel®. The Sinister Diesel Billet Coolant Reservoir (Degas) Cap is a premium upgrade for the 2020–2025 6.7L Powerstroke, replacing the factory plastic cap with a precision CNC-machined billet aluminum design built to last. Maintaining proper cooling system pressure is critical to the performance and reliability of your engine. Designed to operate at the factory 21 PSI pressure rating, our billet degas cap provides a secure seal to help your cooling system perform as intended under everyday driving, towing, and heavy-duty use. Machined from solid T6-6061 billet aluminum, this cap offers significantly greater durability than the factory plastic cap while adding a premium finishing touch under the hood. The laser-etched Sinister Diesel logo and signature Sinister Blue finish complement other Sinister Diesel engine bay upgrades for a clean, cohesive appearance. Designed as a direct replacement, installation takes only minutes using the factory coolant reservoir with no modifications required.