Headlight Adjusting Screw for 1975-1979 Buick Skylark & More - Dorman 42125

$9.99

Vehicles this part fits

    Part number: 42125
    UPC: 037495421256
    Condition: New
    Weight: 0.10 LBS
    Item Package Quantity: 1
    $9.99
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    Dorman - HELP Headlight Adjusting Screw P/N:42125
    Dorman - HELP Headlight Adjusting Screw P/N:42125
    $9.99
    $9.99

    Replace a stripped, broken or missing adjuster with the Dorman headlight adjusting screw, part number 42125 from the Dorman - HELP line. It lets you set the headlamp's aim and hold it there. It fits many vehicles, among them the 1975-1979 Buick Skylark, 1976 Pontiac Ventura and 1973-1975 Buick Apollo. See the "Vehicles it fits" section for the full list of applications and engine details.

    • Direct replacement: Designed to match the original part's fit and function, so it drops in like the factory screw on the listed applications.
    • Ideal solution: A dependable option when the factory adjusting screw has gone missing or worn out from fatigue.
    • Durable construction: Built from quality materials and intended for reliable performance and long service life.
    • Trustworthy quality: Backed by Dorman's team of product experts in the United States and more than a century of automotive experience.

    A headlight adjusting screw is turned to move the headlamp and set the aim of the beam. Signs this part may need replacing include:

    • a headlamp that won't hold its aim or sits loose
    • an adjuster that turns without moving the lamp
    • a screw that is broken or missing

    If a worn or damaged screw is the cause, this part replaces it. After installation, check and set headlamp aim following the vehicle's service information.

    Interchange: 1235816 · 1493541 · 421252

    This part cross-references / interchanges with the following part numbers:

    1235816, 1493541, 421252

    Frequently Asked Questions

    What does a headlight adjusting screw do?

    It sets the headlamp's aim. Turning the screw moves the headlamp so the beam can be pointed where the vehicle's service information calls for.

    Will this Dorman screw fit a 1975-1979 Buick Skylark?

    Yes. The 1975-1979 Buick Skylark is among the listed applications, along with the 1976 Pontiac Ventura and the 1973-1975 Buick Apollo. Check the "Vehicles it fits" section for your exact vehicle.

    What are signs a headlight adjusting screw may need replacing?

    Look for a headlamp that won't hold its aim, sits loose, or doesn't move when the adjuster is turned, or a screw that is broken or missing. Diagnose the cause first, since other mounting parts can also be at fault.

    Is it designed to match the original part?

    Yes. Dorman designs it to match the original part's fit and function on the listed applications, and builds it from quality materials for reliable performance.

    Should I re-aim the headlights after installing it?

    It's a good idea to check headlamp aim after installation. Follow the vehicle's service information for the correct procedure and specifications.

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