Restore exhaust flow performance using this 3910881 exhaust manifold for Cummins ISB5.9, 6B5.9 and ISBE engines. High?strength cast construction withstands persistent high exhaust heat without warping. Well?matched flange surfaces ensure tight gasket contact to stop gas blow out. It is a key component for fixing power loss and excessive exhaust noise problems.
Condition:New / OEM Quality
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