AAM 40255188
AAM part number 40255188 is a differential pinion seal in the Drivetrain system. This catalog matches it to 48 year-and-engine configurations from 2020 to 2026.
Verified fitment includes 2026 Chevrolet Silverado 2500 6.6L V8 ; 2026 Chevrolet Silverado 2500 6.6L V8 DIESEL Turbocharged ; 2026 Chevrolet Silverado 3500 6.6L V8 ; 2026 Chevrolet Silverado 3500 6.6L V8 DIESEL Turbocharged ; 2026 GMC Sierra 2500 6.6L V8 DIESEL Turbocharged , plus 43 other configurations. See every vehicle this part fits.
Frequently Asked Questions
What is AAM 40255188?
AAM part number 40255188 is a differential pinion seal with published application data for 48 vehicle configurations from 2020 to 2026. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does AAM 40255188 fit?
This catalog matches 40255188 to 48 year-and-engine configurations from 2020 to 2026. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is AAM 40255188 OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. AAM 40255188 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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