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Coolant Drain Plug Hex Size on Engine Block
Can somebody please tell me what size the Brass/Bronze
colored hex plug on the drivers side of the engine block
just above the oil cooler lines and oil filter is on a 8.1
Liter, Big Block GAS engine? ![]()
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| Engine | 8.1 L |
| Trans | 5-speed Automatic (Electronic) |
Vehicle Data
2004 Chevrolet Silverado 2500 HD LT 8.1L
| Engine | 8.1 L |
| Trans | 5-speed Automatic (Electronic) |

8 Replies Received
8 Replies Received