FWIW. The 2002 Diplomat(GVWCC 32,000 lbs) that I have came with Monroe Gas Magnum shock Number 555014(Purchased my replacements at Advance Auto Parts). If you look the spec up, and compare it with the measurements you have for your existing Shocks, that might give you a hint as to the type of replacement (shaft size, tube diameter and overall length, rod extension, etc.) needed. If your coach has a greater CC you may need a heavier Shock and thus the difference in the Part Number. Again, FWIW.
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2002 Monaco Diplomat Triple Slide PST
2011 Buick Enclave(AWD);
1970 Home built 11.5 ft Slide-in Cabover
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