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Reproduction Of Original Replaces GM # 3720616 Cup Shaped 1/4 Deep 3.5 OD X 5/8 ID 4 - 11/32 Holes Don't forget to add this important item to your water pump install or engine rebuild. Without this spacer you might have belt misalignment or extra wear on the pulley.
| Make | Model | Years |
| Chevrolet | Chevelle | 1964 - 1968 |
| Chevrolet | Malibu | 1964 - 1967 |