6 CYLINDER ENGINE 0 413 BOLT SCREW STU D Engine Valve Rocker Arm Cover 84 85 E 231 9 25519857 AR 70 BOLT VLV RKR CVR TO CYL HD PGO 36 46 84 85 G 231 9 25519857 AR 70 BOLT VLV RKR CVR TO CYL HD PGO 36 46 86 87 G 3 8 7 25519857 AR 70 BOLT VLV RKR CVR TO CYL HD PGO 36 46 84 G 231 9 25519858 3 7 35 BOLT VLV RKR CVR PGO 39 55 86 87 G 3 8 7 25525491 1 4 80 BOLT VLV RKR CVR PGO 47 29 82 84 B 4 1 4 1255271 LH 1 45 BOLT W PLT VLV RKR CVR TO CYL HD RR OTR PGO 29 39 82 83 C 4 1 4 1255271 LH 1 45 BOLT W PLT VLV RKR CVR T0 CYL HD RR OTR PGO 29 39 82 84 E 4 1 4 1255271 LH 1 45 BOLT W PLT VLV RKR CVR TO CYL HD RR OTR PGO 29 39 82 83 G 231 3 8 1255271 LH 1 45 BOLT W PLT VLV RKR CVR TO CYL HD RR OTR PGO 29 39 82 84 G 4 1 4 1255271 LH 1 45 BOLT W PLT VLV RKR CVR TO CYL HD RR OTR PGO 29 39 84 D 4 1 4 1255271 LH 1 45 BOLT W PLT VLV RKR CVR TO CYL HD RR OTR PGO 29 39 85 G 231 9 25519858 3 7 35 BOLT W WA VLV RKR CVR PGO 39 55 86 87 G 3 8 7 25519858 3 7 35 BOLT W WA VLV RKR CVR PGO 39 55 86 87 G 231A 1251242 AR 1 15 SCREW W PLATE VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 82 83 B 231A 1251242 AR 1 15 SCREW W PLT VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 82 84 B 4 1 4 1251242 AR 1 15 SCREW W PLT VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 82 83 B 231A 3 8 1381008 AR 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 82 84 B 4 1 4 1381008 AR 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 82 83 C 4 1 4 1251242 AR 1 15 SCREW W PLT VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 82 83 C 4 1 4 1381008 AR 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 82 84 E 4 1 4 1251242 AR I 15 SCREW W PLT VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 82 E 231 3 1381008 AR 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 82 84 E 4 1 4 1381008 AR 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 82 83 G 231 3 8 1251242 AR I 15 SCREW W PLT VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 82 83 G 231A 1251242 AR I 15 SCREW W PLT VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 82 84 G 4 1 4 1251242 AR I 15 SCREW W PLT VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 82 83 G 231A 3 8 1381008 AR 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 82 83 G 231 3 8 1381008 AR 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 82 84 G 4 1 4 1381008 AR 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 84 85 B 231A 1381008 6 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 84 D 4 1 4 1251242 AR 15 SCREW W PLT VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 84 D 4 1 4 1381008 AR 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 84 85 G 231A 1381008 6 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 85 B 231A 1251242 2 I 15 SCREW W PLT VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 85 G 231A 1251242 2 I 15 SCREW W PLT VLV RKR CVR W 1 UNTHREADED STUD PGO 30 70 86 87 G 231A 1381008 AR 66 SCREW W PLT VLV RKR CVR HEX HD LESS UNTHREADED STUD PGO 29 36 84 G 4 3V 22527788 AR 49 STUD VLV CVR TO CYL HD 82 84 X 2 8X Z 14077864 2 52 STUD VLV RKR CVR SPL M6 X 1 THREAD O2 251 PGO 15 12 85 X 2 8W X 14077864 AR 52 STUD VLV RKR CVR SPL M6 X 1 THREAD O2 251 PGO 15 12 ji T 1991 GENERAL MOTORS SERVICE PARTS 0PERAT 0NS BUICK 44W 6 91 0 4 0 41 3 0 41 3