Harley-Davidson X440 Front Brake Master Cylinder Switch Set HDH45570ACF000S | Genuine Brake Lever Switch

Harley-Davidson X440 Front Brake Master Cylinder Switch Set – HDH45570ACF000S

Replace the correct switch component fitted within the Harley-Davidson X440 front brake master-cylinder / front brake-lever assembly with the genuine SWITCH SET – HDH45570ACF000S. The supplied September 2023 X440 parts sheet identifies this exact SKU as SWITCH SET and places it in the same front-brake master-cylinder group as the master-cylinder cap, lever clamp, master-cylinder service set and reservoir cover.

For customers and workshops, this part may be searched as a Harley X440 front brake switch, X440 brake lever switch, X440 front master cylinder switch, front brake switch set, or by the exact part number HDH45570ACF000S. The factory catalogue uses the shorter description SWITCH SET, so this listing keeps the OEM terminology while making the location and purpose understandable to the buyer.

Product Identity

• Brand: Harley-Davidson
• Part Number: HDH45570ACF000S
• Official Catalogue Description: SWITCH SET
• Buyer-Friendly Description: Front Brake Master Cylinder / Brake Lever Switch Set
• System: Front brake control assembly
• Location: Right handlebar, front brake lever / master-cylinder area
• Quantity: 1 set

Confirmed Compatibility

• Harley-Davidson X440 – September 2023

Fitment note: this exact SKU is confirmed from the supplied September 2023 X440 catalogue. Do not order only by appearance. If fitting to an X440 OBDII or X440T, verify the exact part number before purchase.

Why This Is a Front-Brake / Master-Cylinder Switch

The supplied catalogue places HDH45570ACF000S directly with the X440 front-brake master-cylinder components. Nearby items include the cap master cylinder, clamp lever, cylinder set master and reservoir cover set. Harley-Davidson X440 documentation also identifies the front brake master cylinder / reservoir and front brake lever on the right handlebar.

When Buyers Usually Need This Part

• The original front-brake switch set is damaged or missing
• The switch body or connector has been damaged near the front brake lever
• Front master-cylinder / lever assembly is being repaired after a fall
• A technician has diagnosed the switch itself as faulty
• The switch was damaged during lever or master-cylinder replacement
• The motorcycle is being restored using the correct genuine part

Important – This Is Not the Handlebar Combination Switchgear

HDH45570ACF000S is not the complete left or right handlebar switch cluster. The X440 has separate handlebar controls for functions such as horn, indicators, hazard, start / kill and other rider controls. This SKU belongs to the front brake master-cylinder / lever component group.

Do Not Confuse This Part With

• Left handlebar multifunction switch
• Right start / kill switchgear
• Front brake master-cylinder repair kit
• Complete master-cylinder assembly
• Front brake lever
• Master-cylinder cap
• Lever clamp
• Reservoir cover
• ABS wheel-speed sensor

Related Front Master-Cylinder Components

• HDH45513ACP000S – Cap Master Cylinder
• HDH45517ACP010S – Clamp Lever
• HDH45530ACP000S – Cylinder Set Master / master-cylinder repair set
• HDH45570ACF000S – Switch Set – this product
• HDH45590ACP000S – Reservoir Cover Set

Why Exact Part-Number Matching Matters

• Small brake-control switches can look nearly identical
• Connector style, mounting shape and actuation position can differ
• The wrong switch may not mount or operate correctly
• Electrical items should be matched by exact OEM SKU whenever possible
• Exact identification reduces wrong-order and installation problems

What’s in the Box

• 1 x Genuine Harley-Davidson X440 Switch Set
• Part number: HDH45570ACF000S

Installation Notes

• Confirm the old part number and connector before installation
• Inspect the front brake lever and master-cylinder mounting area for accident damage
• Do not force the connector or alter the wiring
• Route wiring so it cannot be pinched by the lever, handlebar or steering movement
• After installation, confirm the associated switch function operates correctly before riding
• Electrical diagnosis should be carried out by a competent motorcycle technician

Electrical Part Return Note

Please verify the exact SKU and connector before opening / installing the part. Electrical components are sensitive to incorrect diagnosis, connector mismatch and installation damage.

FAQs

1. What is HDH45570ACF000S?
It is the genuine SWITCH SET listed in the Harley-Davidson X440 front brake master-cylinder / lever parts group.

2. Is this a complete handlebar switch assembly?
No. This is not the multifunction handlebar switchgear. It is the smaller switch set associated with the front brake control / master-cylinder area.

3. Which model is confirmed?
The supplied parts sheet confirms Harley-Davidson X440 – September 2023.

4. Is this the master-cylinder repair kit?
No. The master-cylinder internal repair set is a separate item, HDH45530ACP000S.

5. Is this the front brake lever?
No. The lever and lever clamp are separate parts.

6. Why does the catalogue only say “SWITCH SET”?
OEM catalogues often use short engineering descriptions. Its placement in the front-brake master-cylinder group identifies the assembly area, which is why this listing uses the clearer buyer-facing name front brake master-cylinder / brake lever switch set.

7. Should I buy it if I only have an electrical fault?
Only after diagnosis. Wiring, connector damage or another electrical fault can sometimes produce similar symptoms, so the switch should be confirmed before replacement.

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