B4 45 1976 79 T BRAKE MASTER CYLINDER 1 CYLINDER ASM Brake Master Incl Key N0 2 16 4 650 2 BODY Mas Cyl Part of Mas Cyl N S 3 PISTON ASM Primary Note 1 N S 4 PISTON ASM Secondary Note 1 N S 5 VALVE ASM Check Primary Note 1 N S 6 CONNECTOR ASM Frt Brk Pipe to Mas Cyl 4 661 7 VALVE ASM Check Mas Cyl Secondary Note 1 N S 8 CONNECTOR ASM Rr Brk Pipe to Mas Cyl 4 661 9 SPRING Check Valve 4 657 i 10 RETAINER Spring Check Valve 4 657 11 GASKET Connector to Check Valve Note 1 N S 12 BOLT Stop Brk 4 653 13 GASKET Stopper Bolt to Mas Cyl Body Note 1 N S 14 RING Snap Brk Note 1 N S 15 CONNECTOR Mas Cyl to Reservoir Tank 4 651 16 CLIP Connector 4 651 17 GASKET Brk Mas Cyl to Mas Vac Note 2 4 648 18 BRACKET Brk Mas Cyl to Fender Skirt 4 648 19 BOLT Hex M8 x 1 25 20 8 900 20 WASHER 5 is x 4 008 21 RESERVOIR Brk Mas Cyl Incl Key No 22 24 4 651 22 BODY Oil Part of Oil Reservoir N S 23 FILTER Reservoir Brk Oil 4 651 24 COVER Reservoir Brk 4 651 25 BRACKET Reservoir to Fender Skirt 4 651 26 SCREW Hex M6 x 1 0 x 12 8 913 27 WASHER Lk 4 8 931 28 BOLT Hex M8 1 25 x 16 8 900 29 WASHER 5 x 8 929 30 HOSE Reservoir to Mas Cyl Frt 4 651 31 HOSE Reservoir to Mas Cyl Rr 4 651 32 CLIP Hose 1 166 33 NUT Hex M8 x 1 25 8 915 34 WASHER Lk M8 8 931 35 WASHER 2 5 x 8 929 36 REPAIR PKG Brake 4 649 37 BODY Mas Cyl Part of Mas Cyl N S 38 SPRING Mas Cyl Sec N S 39 PISTON ASM Secondary N S 40 SPRING Mas Cyl Pri N S 41 PISTON ASM Primary N S 42 VALVE ASM Check Mas Cyl N S 43 CONNECTOR ASM Rr Brk Pipe to Mas Cyl 4 661 44 GASKET Connector to Check Valve 4 661 45 SPRING Check Valve 4 657 46 CONNECTOR Mas Cyl To Reservoir Tank 4 651 47 CLIP Connector Mas Cyl 4 651 48 REPAIR KIT Brake Mas Cyl I 4 649 NOTE 7 Serviced by HEPA H P G bra re master cy 0n y 4 649 NOTE 2 A 0 inc uded in HEPA H PKG brake master cyi 4 64 9 GM PARTS DIVISION GENERAL MOTORS CORPOF ATION BUICl 41A 9 80 T4 17 I 4 000 GROUP I 1