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Harley-Davidson

Harley X440 / X440 OBDII / X440T / X440X / Mavrick 440 Front Brake Caliper Boot Kit OEM | HDH45221ACA000

Harley X440 / X440 OBDII / X440T / X440X / Mavrick 440 Front Brake Caliper Boot Kit OEM | HDH45221ACA000

Rs. 36.00
Rs. 37.00 Rs. 36.00
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Important Order Policy
Please order only after confirming the part number, model, variant, year, side, connector type and compatibility. All orders are non-cancellable once placed. Correctly shipped spare parts are not eligible for return, exchange or refund due to wrong selection, wrong diagnosis, fitment mismatch, mechanic recommendation or change of mind. Electrical/electronic items are additionally non-returnable once opened, installed, plugged in, tested or used. Wrong item, damaged item or missing item claims require a complete unboxing video within 24 hours. Read full Return & Warranty Policy

Replace worn, torn, hardened, or damaged front brake caliper rubber boots with this OEM boot kit for Harley X440 and Hero Mavrick 440 platform motorcycles. Part number HDH45221-ACA-000 is identified as BOOT KIT in the front brake caliper group. In buyer language, this is best understood as a front brake caliper boot kit, caliper rubber boot kit, or front caliper boot set.

This kit is used in the front brake caliper assembly. If the old rubber boots are torn, leaking, hardened, cracked, or no longer sealing the caliper correctly, replacing them is often part of a proper front caliper service or rebuild. Fresh boots help keep dirt, moisture, and contamination away from critical internal brake components.

This listing is written to be easier for customers to understand. Instead of only using the factory term BOOT KIT, it also uses the common buyer names: front brake caliper boot kit, caliper boot set, and caliper rubber boot kit.

Compatibility as requested: Harley X440, X440 OBDII, X440T, X440X, and Hero Mavrick 440. Before ordering, please match your old part, caliper design, and exact bike application. Brake parts should never be purchased only by guess or by symptom alone.

This listing is for the front brake caliper boot kit only. Do not assume it includes caliper pistons, seals beyond the boot kit contents, brake pads, caliper bracket, complete caliper, hose, or mounting hardware unless separately stated.

Key Features

  • Genuine OEM front brake caliper boot kit
  • Part number: HDH45221-ACA-000
  • Factory description: BOOT KIT
  • Buyer language: front brake caliper boot kit / caliper rubber boot kit
  • Used in the front brake caliper assembly
  • Suitable for front caliper repair or rebuild work
  • Useful when old rubber boots are cracked, torn, hardened, or leaking
  • Helps keep dirt and moisture away from caliper internals
  • Clear return-prevention copy for a technical brake component
  • OEM-style fit for the listed applications

Compatibility

Make Model / Variant Fitment Status Notes
Harley-Davidson X440 Front brake caliper boot kit application.
Harley-Davidson X440 OBDII Front brake caliper boot kit application.
Harley-Davidson X440T Front brake caliper boot kit application.
Harley-Davidson X440X Use old part match before ordering.
Hero Mavrick 440 Use old part match before ordering.

What's in the Box

  • 1 x HDH45221-ACA-000 – Front Brake Caliper Boot Kit

Installation & Maintenance Notes

  • This listing is for the boot kit only.
  • It is not a complete front brake caliper rebuild kit unless additional parts are purchased separately.
  • Please match the old part and caliper design before ordering.
  • Inspect pistons, caliper bore condition, seals, pads, and brake fluid condition during rebuild.
  • Brake work should be done carefully and correctly. If unsure, use a qualified mechanic.

Before You Order

Important: This is a front brake caliper boot kit. It is not the full caliper, not the caliper bracket, and not the brake pad set.

If your brake issue is only weak braking, dragging, or noise, do not order this part only on assumption. Confirm that the rubber boots are actually damaged, leaking, cracked, or worn before purchase.

Why Buy From Under The Hood

  • Buyer-friendly naming for technical OEM brake parts
  • Clear explanation of what the boot kit actually does
  • Helpful distinction between boot kit and complete caliper parts
  • Useful for workshops and customers who need exact brake rebuild parts

FAQs

1. What is HDH45221-ACA-000?
It is the OEM front brake caliper boot kit, listed by the factory as BOOT KIT.

2. Is this a complete front caliper?
No. This is only the boot kit used in the front brake caliper assembly.

3. Are pistons included?
Do not assume that. This listing is only for the boot kit unless other items are separately stated.

4. Which bikes is this listed for?
This listing is made for Harley X440, X440 OBDII, X440T, X440X, and Hero Mavrick 440.

5. When should this part be replaced?
Replace it when caliper boots are torn, cracked, hardened, leaking, or damaged during brake service or caliper rebuild.

6. Is this front or rear brake related?
This is for the front brake caliper.

7. What should be checked before ordering?
Please confirm the exact bike application, old part match, and whether you need only the boot kit or a larger caliper repair kit.

Verify Fitment on Official Brand Portals

For selected genuine spare parts, you can cross-check the part number on the official brand portals before ordering.

Royal Enfield Official Spares Portal

Hero MotoCorp Official eCatalogue

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