| Part | Manufacturer | OEM Part # | Price | Notes |
| Brake Booster, 9' Diaphragm |
| Chassis 123.123: to Series 092734 | MGB | 0014306630 | 520.00 | Applications for chassis 123.- shown here are for vehicles that may have fuse box clearance problems with later version booster. This is the original part number that was used on these vehicles. |
| Brake Booster, 10 1/2' Diaphragm |
| Chassis 123.123: to Series 217005 | MGB | 0024304530 | 615.00 | Caution: This unit may hamper access to fuse box on some early model chassis 123.- vehicles. Where 9' diaphragm is necessary, please use # 001-430-66-30 to avoid this problem. A spacer bushing on fork maybe necessary when replacing with later version booster, see # 123-292-01-50 |
| Chassis 123.123: From Series 217006 | MGB | 0024304630 | 515.00 | |