DORMAN 645123
DORMAN part number 645123 is a turn signal lamp socket in the Electrical-Bulb & Socket system. This catalog matches it to 43 year-and-engine configurations from 2005 to 2023.
Verified fitment includes 2023 Chevrolet Silverado 2500 6.6L V8 ; 2023 Chevrolet Silverado 3500 6.6L V8 ; 2023 GMC Sierra 2500 6.6L V8 ; 2023 GMC Sierra 3500 6.6L V8 ; 2022 Chevrolet Silverado 2500 6.6L V8 , plus 38 other configurations. See every vehicle this part fits.
Frequently Asked Questions
What is DORMAN 645123?
DORMAN part number 645123 is a turn signal lamp socket with published application data for 43 vehicle configurations from 2005 to 2023. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does DORMAN 645123 fit?
This catalog matches 645123 to 43 year-and-engine configurations from 2005 to 2023. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is DORMAN 645123 OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. DORMAN 645123 is listed with its manufacturer part number so you can compare it to an OEM number or another brand that covers the same fitment.
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