MDC Diesel Billet Rear Freeze Plug | 2003–Current Dodge Ram 5.9L & 6.7L Cummins

Upgrade Your Cummins with a Heavy-Duty Billet Rear Freeze Plug Built for Maximum Strength, Durability, and Reliability!

The MDC Diesel Billet Rear Freeze Plug is a heavy-duty upgrade designed to replace the factory rear engine block freeze plug on 2003–Current Dodge Ram trucks equipped with the 5.9L or 6.7L Cummins Turbo Diesel engine.

Factory rear freeze plugs can become a potential failure point, especially in high-performance applications where increased engine demands and cooling system pressures can contribute to plug failure. A failed rear freeze plug can result in significant coolant loss, costly repairs, and potential engine damage.

The MDC Diesel Billet Rear Freeze Plug provides a stronger, more durable alternative to the factory plug, helping improve cooling system reliability in both stock and modified Cummins engines.

Whether you're building a high-horsepower competition truck, performing an engine rebuild, or upgrading your daily driver, this billet rear freeze plug is an excellent preventative upgrade.

Key Features & Benefits

• Heavy-Duty Billet Construction: Precision-machined billet design provides increased strength and durability compared to conventional factory freeze plugs.

• Upgraded Rear Block Protection: Designed to replace the factory rear engine block freeze plug, a critical component of the Cummins cooling system.

• High-Performance Reliability: Ideal for high-horsepower Cummins builds, performance applications, and demanding operating conditions.

• Precision-Machined Fitment: Engineered for a secure fit in compatible 5.9L and 6.7L Cummins engine blocks.

• Helps Prevent Coolant Loss: Provides a durable replacement designed to reduce the risk of freeze plug failure and unexpected coolant leaks.

• Built for Long-Term Durability: Suitable for daily-driven trucks, heavy towing applications, and competition diesel engines.

Vehicle Compatibility

• 2003–2007 Dodge Ram 2500/3500 – 5.9L Cummins Turbo Diesel

• 2007.5–2018 Dodge Ram 2500/3500 – 6.7L Cummins Turbo Diesel

• 2019–Current Ram 2500/3500 – 6.7L Cummins Turbo Diesel

Why Upgrade Your Rear Freeze Plug?

The rear freeze plug is located at the back of the engine block, making it one of the more difficult freeze plugs to access and replace. Failure of this component can lead to substantial labor costs, particularly when transmission removal is required to access the affected area.

Upgrading to the MDC Diesel Billet Rear Freeze Plug during an engine rebuild, transmission removal, or performance upgrade can help prevent future headaches and costly repairs.

For Cummins owners pushing their engines beyond factory power levels, upgrading vulnerable cooling system components is an important part of building a dependable engine.

Built for Cummins Performance

At MDC Diesel, we specialize in developing heavy-duty diesel performance components designed to meet the demands of hardworking trucks and high-performance engine builds.

Don't let a factory freeze plug become the weak link in your Cummins engine.

Upgrade to the MDC Diesel Billet Rear Freeze Plug for improved strength, dependable sealing, and long-lasting performance.