The Cometic C5591-061 MLX Head Gasket is the top choice for 1989-1998 3.9 Cummins 4BT trucks, designed to meet or exceed OEM standards. Proudly made in the USA with high-quality American materials, this head gasket features a high-temperature polymer outer layer for exceptional durability. Specialized embossments create a micro-seal, ensuring a reliable barrier for essential fluids between the head and block surfaces. Trust the Cometic C5591-061 MLX Head Gasket for superior sealing performance and long-lasting engine protection, no matter the conditions.

• Made in the USA with American materials
• Meets or exceeds OEM specifications
• High-temperature polymer outer layer for durability
• Embossments create a micro-seal for superior fluid containment