Holley Spacer
| Part No. | Fitting Size |
| 4150-1 | 1‘’4150 Holley Spacer |
| 4150-2 | 2‘’4150 Holley Spacer |
| 4500-1 | 1‘’4500 Holley Spacer |
| 4500-2 | 2‘’4500 Holley Spacer |
| Part No. | Fitting Size |
| 4150-1 | 1‘’4150 Holley Spacer |
| 4150-2 | 2‘’4150 Holley Spacer |
| 4500-1 | 1‘’4500 Holley Spacer |
| 4500-2 | 2‘’4500 Holley Spacer |