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Genuine Harley-Davidson rear brake master cylinder reservoir cover, part number 45057-99. The cover is in good overall condition, the warning text remains legible, and the rubber diaphragm/boot shows no visible cracks or rips.
Part Number: 45057-99
Condition: Used – Good
USED PARTS DISCLAIMER: This is a used motorcycle part and may show normal signs of age, installation, removal, storage, and previous use, including scratches, scuffs, discoloration, surface corrosion, or other cosmetic wear. Any known damage or defects will be noted when known. Unless otherwise stated, the photos show the actual item being sold and are considered part of the description.
FITMENT NOTES: Aftermarket replacement references cross-reference OEM 45057-99 to 1999-2017 Harley Big Twin applications. Verify reservoir shape, screw spacing, warning text, and the original part number before purchase.
FITMENT: Buyer is responsible for verifying fitment before purchasing. Fitment information is provided as a reference based on available part numbers, markings, donor information, dimensions, and manufacturer information. Motorcycles may have been modified over time. Compare the part number, mounting points, cable ends, connectors, measurements, and photos with the part currently on your motorcycle.
QUESTIONS? Send us a message before purchasing if you need additional measurements, photos, condition details, or clarification on what is included.
SHIPPING: Orders are typically processed and shipped within 1–2 business days after payment. Tracking is provided once the order ships. Parts are packed according to their size, weight, and type. Multiple items may be combined into one shipment when practical. Large, heavy, or oversized items may require additional handling or shipping arrangements.
