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1973-1974 GMC K25/K2500 Suburban 7.4L V8. 1970-1972 GMC K25/K2500 Suburban 6.6L V8. 1968-1969 GMC K25/K2500 Suburban 6.5L V8. The housing and cover are CNC machined and phosphate coated. The lower pressure spring is included to reduce pressure if desired.





