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LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523
LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523
LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523
LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523
LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523
LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523
LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523
LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523
LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523
LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523

LS1 4.8 5.3 GM 853 HEAD SET CATHEDRAL PORT CORES OEM #523

used oem. 853 heads pulled from running motor. please see pictures for condition

 USED OEM CHECK PICTURES FOR CONDITION