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Aftermarket T3 Exhaust manifold with turbo flange centered, facing straighit up, or can be flipped to face straight down.
Requires use of long exhaust manifold bolts, the flange is the same style as stock 12 valve Cummins manifolds.
This manifold has RECTANGLE exhaust ports and a T3 flange.
Reliance part number: K3902347
Replaces Cummins: 3931745 & 3902347
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