ProMaxx Performance CHR618N Cylinder Head for Cummins Diesel 5.9L 6BT 12V Assembled
723-CHR618N
Product Q&A
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1989-1998 5.9L 12-Valve 6BT
Specifications:
Are the valve springs stock or 160# or ??
Do these replacement heads come with top hat style valve seals or the push on stlye? Reason for asking is the push on stlye like to ride up valve stem where the top hats are held in place by the valve springs.
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