53 55 Comm 1st Ser exc H T 3774211 1 18 95 PUMP UNIT pulley V wide Note 1 55 61 All 6 cyl 2nd Ser 62 All 235 63 4 WD 235 3774186 1 18 95 PUMP UNIT less pulley Note 1 2 55 65 All 8 cyl 2nd Ser exc 396 66 70 All 283 307 327 350 3957981 1 17 95 PUMP UNIT 63 65 All 194 230 exc G 10 63 65 Ser 10 D D 4 cyl 64 G 1O 194 1st design 65 70 All Blazer 6 cyl exc 292 3947042 1 16 75 PUMP UNIT 64 G 10 4 cyl 64 G 10 194 2nd design 65 66 G 10 exc 8 cyl 3876169 1 16 75 PUMP UNIT 65 70 All 292 3947051 1 17 95 PUMP UNIT 68 70 Ser 10 thru 30 396 3957982 1 31 75 PUMP UNIT 67 70 All 3 53 5197626 1 13 45 REPAIR UNIT NOTE 1 Includes pump to block gasket NOTE 2 On 55 56 models 3838094 reducing nipple must be used 1 070 CAP Coolant Pump 64 69 All 1191141 1 35 heater hose pipe 1 073 BODY BOLT STUD COVER PLUG NIPPLE Coolant Pump 67 70 All 3 53 5109045 1 11 05 56 57 D D 8 cyl 3836646 1 20 BOLT 16 x 1 3 275 66 Ser 10 A Fl w C A C 8 cyl 3779940 1 10 BOLT upper right hoIe 7 874 60 68 Ser 10 thru 30 283 307 327 exc C A C A I R 67 68 G 10 20 283 exc A R STUD upper R H pump attaching 24 x 16 x 2 B 70 All Blazer 8 cyl 3759755 1 15 lower L H 69 Ser 10 thru 30 w A l R 396 exc A T 3883264 1 15 STUD upper R H 66 67 All w A I R 283 327 68 Ser 10 307 327 exc V A T C A C 68 Ser 20 Sub 307 327 exc A T Roof Mtd A C 3885052 1 15 STUD upper right 68 Ser 10 307 327 exc A T I 69 Ser 20 Sub 307 327 exc A T STUD upper left 68 70 D D 307 327 350 3927111 1 40 upper right 69 Ser 10 thru 30 G 10 20 w A I R 307 350 69 Ser 20 30 w 63 amp gen 8 cyl exc A I R 396 D D 70 All Blazer 307 350 3947774 1 4 25 STUD upper L H 16 x 3 70 All 396 3877646 L H 1 30 STUD upper L H 67 70 All 3 53 5119283 1 64 COVER 67 70 All 3 53 5115214A R 20 PLUG pump body hex socket pipe V2 PTF 1 251 67 70 All 3 53 5119477 1 1 45 NIPPLE hose Va 0 D x 1 O L 0 206 1 079 GASKET Coolant Pump Assembly to Block 41 54 All 55 Comm Ist Ser 3836048 1 15 has two Wu center holes one half flat hole 55 62 All 6 cyl 2nd Ser 63 4 WD 6 cyl 1st Ser 3836162 1 15 3 716 I D w 5 holes z dia 55 70 All Blazer 8 cyl exc 396 3754587 1 15 left or right large D cork Note 1 NOTE 1 When using as L H gasket trim off V2 dia hole 63 70 All Blazer 194 230 250 63 65 D D G 10 4 cyl 3788478 1 15 63 70 Ser 10 thru 30 292 3815848 1 15 68 70 All 396 3860039 2 15 IVM D x two z holes at ends 67 70 All 3 53 5119460 1 09 five Wu dia holes 3 t 1971 CHEVROLET MOTOR DIVISION GENERAL MOTORS CORPORATION P A 31 T 1 069 1 079 1 24 REV 6 71