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This GM headlight adjusting screw and nut assembly is designed for headlamp mounting systems that use adjustable hardware to position and aim the headlight. It provides a replacement for worn, damaged, or missing adjustment components encountered during headlight repair, restoration, replacement, or aiming service.
The assembly features a #12-28 adjusting screw with a 1-11/16" length and includes the corresponding adjusting nut. It cross-references GM OEM numbers 559312, 15714775, and 557057 when the original headlight adjuster matches the specified thread size, length, and assembly design.
OEM Cross Reference
GM: 559312
GM: 15714775
GM: 557057
| Product Type | Headlight Adjusting Screw & Nut Assembly |
| Application | GM |
| Common Uses | Headlight Adjustment / Headlamp Mounting |
| Construction | Screw & Nut Assembly |
| Screw Size | #12-28 |
| Length | 1-11/16" |
| GM OEM Cross References | 559312, 15714775, 557057 |
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