Cummins Billet Aluminum Cap (ISX CM2250, CM2350)

The Cummins Billet Aluminum Cap is a precision-engineered upgrade designed to replace factory plastic or stamped caps with a stronger, more durable solution. Machined from high-grade billet aluminum, this cap provides a secure, leak-free seal and long-lasting resistance to heat, vibration, and corrosion—making it ideal for heavy-duty diesel applications.

Crafted for both performance and presentation, the Billet Aluminum Cap features a clean, polished finish that enhances any engine bay while maintaining a tight, reliable fit. Its robust construction ensures consistent sealing pressure and dependable performance even under the toughest operating conditions.

Whether you’re performing a rebuild, upgrading for reliability, or adding a finishing touch to your engine, the Cummins Billet Aluminum Cap delivers the perfect blend of durability, precision, and style.