6LT8.9 DCEC Exhaust Manifold 3971505: Exceptional Performance for Cummins Engines Introduction When it comes to maintaining the peak performance of your Cummins engine, the 6LT8.9 DCEC exhaust manifold 3971505 from Shree Engineering Services stands out as a top choice. Designed specifically for Cummins 6LT8.9 DCEC engines, this exhaust manifold offers superior durability and performance, ensuring […]