NATIONAL 127591
NATIONAL part number 127591 is a differential pinion seal in the Drivetrain system. This catalog matches it to 23 year-and-engine configurations from 2011 to 2018.
Verified fitment includes 2018 Ram 4500 6.4L V8 ; 2018 Ram 4500 6.7L L6 DIESEL Turbocharged ; 2018 Ram 5500 6.4L V8 ; 2018 Ram 5500 6.7L L6 DIESEL Turbocharged ; 2017 Ram 4500 6.4L V8 , plus 18 other configurations. See every vehicle this part fits.
Frequently Asked Questions
What is NATIONAL 127591?
NATIONAL part number 127591 is a differential pinion seal with published application data for 23 vehicle configurations from 2011 to 2018. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does NATIONAL 127591 fit?
This catalog matches 127591 to 23 year-and-engine configurations from 2011 to 2018. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is NATIONAL 127591 OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. NATIONAL 127591 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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