The Hendrickson Spacer, part number 45045-10 or 4504510, is a genuine Hendrickson suspension component sold by Pro Gear and Transmission. Spacers in heavy-duty suspension systems maintain precise component spacing and alignment at key mounting points, making correct part identification critical before ordering. The part number appears as both 45045-10 and 4504510 – confirm which format your parts system uses when cross-referencing. Not sure this is the right spacer for your suspension? Call us and we can help verify the correct fit for your truck.FeaturesGenuine Hendrickson suspension spacerPart number: 45045-10 or 4504510Designed for use in Hendrickson heavy-duty suspension systemsCritical for maintaining proper component spacing and alignmentCall to confirm correct application before ordering