DEF Injector Assembly T437823 is a genuine Perkins diesel engine component designed for industrial, agricultural, and fleet maintenance applications. Engineered to strict factory OEM standards, this heavy-duty DEF Injector Assembly ensures optimal performance, structural longevity, and precise mechanical alignment. Ideal for professional engine rebuilds, routine commercial servicing, and high-precision machinery repairs. Find Diesels supplies 100% factory brand new, authentic Perkins components to minimize equipment downtime and maintain peak operational efficiency.