⚙️ Upgrade your engine’s heartbeat with GM-certified precision!
The ACDelco HL123 Hydraulic Valve Adjuster is a GM-recommended, metal valve lifter designed to meet original equipment specifications. With precision machining and dual oil ports, it ensures optimal valve adjustment and engine performance. Made in the USA, this durable component guarantees reliable, factory-level fit and function for your GM vehicle.
| Material | Metal |
| Brand | ACDelco |
| Item dimensions L x W x H | 8.5 x 2.9 x 1.1 inches |
| Exterior Finish | Machined |
| Inlet Connection Size | 3.5 Inches |
| Inlet Connection Type | Oil |
| Outlet Connection Type | Oil |
| Number of Ports | 2 |
| Outlet Connection Size | 3.5 Inches |
| Specification Met | Yes, meets GM OE specifications |
| Valve Type | lift valve |
| Global Trade Identification Number | 00036666641172 |
| Manufacturer | ACDelco |
| UPC | 036666641172 |
| Model | Valve Lifter |
| Item Weight | 3.2 ounces |
| Product Dimensions | 8.5 x 2.9 x 1.1 inches |
| Country of Origin | USA |
| Item model number | HL123 |
| Is Discontinued By Manufacturer | Yes |
| Manufacturer Part Number | HL123 |
| OEM Part Number | 17120735 |
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