Dorman Exhaust Manifold For 1989-1998 Dodge 5.9L Cummins 674-527 Dorman Exhaust Manifold For 1989-1998 Dodge 5.9L Cummins 674-527 Ships To Continental US Only. The Dorman 674-527 Exhaust Manifold for your 1989-1998 Dodge 5.9L Cummins gives you an affordable solution to replacing the old cracked or... MSRP: Was: Now: $194.70 Add to Cart The item has been added