Grade 8, 3/8-16 x 3/4 long, (12). Each bolt is permanently attached with a set of special cam locking washers. When sufficiently torqued, the washers super hardened external serrated teeth bite into and grip the bottom of the bolt head and the top surface of the header. After being self-locked in this manner, any bolt loosening rotational movement is blocked by the cam locking action created by the washers interfacing matching cams. Loosening the bolt is literally an uphill climb. Vibration that would ordinarily loosen other header bolts actually increases the cam locking tension, keeping the bolt secure. Because this simple cam locking method uses tension instead of friction, contact with oil actually facilitates the cam effect. When changing headers these bolts can be loosened with a normal wrench, re-lubricated then reused.
1947 (47), 1948 (48), 1949 (49), 1950 (50), 1951 (51), 1952 (52), 1953 (53), 1954 (54), 1955 (55), 1956 (56), 1957 (57), 1958 (58), 1959 (59), 1960 (60), 1961 (61), 1962 (62), 1963 (63), 1964 (64), 1965 (65), 1966 (66), 1967 (67), 1968 (68), 1969 (69), 1970 (70), 1971 (71), 1972 (72), 1973 (73), 1974 (74), 1975 (75), 1976 (76), 1977 (77), 1978 (78), 1979 (79), 1980 (80), 1981 (81), 1982 (82), 1983 (83), 1984 (84), 1985 (85), 1986 (86), 1987 (87), 1988 (88), 1989 (89), 1990 (90), 1991 (91), 1992 (92), 1993 (93), 1994 (94), 1995 (95), 1996 (96), 1997 (97), 1998 (98)NPD Part Number : 9432-2LA Manufacturer Reference #'s: 66751,
1965-1973 MUSTANG VERIFY QUANTITY NEEDED FOR YOUR APPLICATION
1979-1985 MUSTANG VERIFY QUANTITY NEEDED FOR YOUR APPLICATION
1967-1973 COUGAR VERIFY QUANTITY NEEDED FOR YOUR APPLICATION
1948-1979 F1-F350
1980-1996 F100-F350 VERIFY QUANTITY NEEDED FOR YOUR APPLICATION
1997-2004 F150-F350 VERIFY QUANTITY NEEDED FOR YOUR APPLICATION
1966-1996 BRONCO VERIFY QUANTITY NEEDED FOR YOUR APPLICATION
1967-1981 CAMARO
1964-1987 CHEVELLE
1967-1981 FIREBIRD
1962-1979 NOVA
1964-1972 TEMPEST
1947-1998 CHEVY TRUCK
1964-1988 CUTLASS
0-0 SKYLARK
1960-1976 MOPAR
1983-2004 R/B/E/M
1960-1970 FALCON (BEFORE 1/1/70), VERIFY QUANTITY NEEDED FOR YOUR APPLICATION
1970-1970 FALCON (FROM 1/1/70), VERIFY QUANTITY NEEDED FOR YOUR APPLICATION
1968-1971 TORINO VERIFY QUANTITY NEEDED FOR YOUR APPLICATION
1964-1970 FAIRLANE VERIFY QUANTITY NEEDED FOR YOUR APPLICATION
WARNING: This product can expose you to chemicals including lead and DEHP, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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