Harley-Davidson X440 / X440 OBDII / X440T Front Sprocket / Countershaft Sprocket OEM | HDH23801-ABY-000

Replace a worn or damaged front sprocket with this genuine OEM front sprocket for Harley-Davidson X440 series motorcycles. Part number HDH23801-ABY-000 is listed in the genuine parts record as SPROCKET DRIVE 1ST. In buyer language, this is best understood as the front sprocket, also commonly called the engine sprocket or countershaft sprocket.

This is the sprocket mounted on the gearbox/output side that drives the final chain. If the old front sprocket is worn, hooked, noisy, causing uneven chain wear, or being replaced as part of a chain-sprocket service, this is the correct OEM-style replacement for the listed applications.

Public Harley X440 chain-sprocket kit listings commonly describe the X440 front sprocket as the front sprocket and specify it as a 15-tooth item in aftermarket kits, which supports using customer-facing search terms like front sprocket and countershaft sprocket in addition to the OEM term.

This part is confirmed for the following applications based on your genuine parts applicability screenshot:

• Harley-Davidson X440 (Sept 2023)
• Harley-Davidson X440 OBDII (May 2025)
• Harley-Davidson X440T (Jan 2026)

Not confirmed in the provided evidence: X440X and Hero Mavrick 440. Please do not assume wider fitment unless your old part, VIN, or EPC reference confirms the same part number.

This listing is for one front sprocket only. It should not be assumed to include the rear sprocket, drive chain, lock plate, retainer, or complete chain-sprocket kit unless separately stated.

Key Features

• Genuine OEM front sprocket / countershaft sprocket
• Part number: HDH23801-ABY-000
• Factory description: SPROCKET DRIVE 1ST
• Buyer language: front sprocket, engine sprocket, countershaft sprocket
• Confirmed for X440, X440 OBDII, and X440T
• Used on the gearbox/output side of the final drive
• Useful when the old front sprocket is worn, hooked, or noisy
• Helps restore proper chain drive performance when replacing worn driveline parts
• Important distinction from rear sprocket and chain kit
• OEM-style fit for the listed applications

Compatibility

What's in the Box

• 1 x HDH23801-ABY-000 – Front Sprocket / Countershaft Sprocket (SPROCKET DRIVE 1ST)

Installation & Maintenance Notes

• This listing is for one front sprocket only.
• Please match your old part number and tooth/profile setup before ordering.
• Do not assume this includes the rear sprocket or chain.
• For best drivetrain life, inspect chain wear, rear sprocket wear, and alignment during replacement.
• If the chain and sprockets are already worn as a set, replacing only one component may shorten service life.

Before You Order

Important: This is the OEM part identified as SPROCKET DRIVE 1ST, presented in buyer language as the front sprocket / countershaft sprocket. It is not the rear sprocket and not a full chain-sprocket kit.

For X440X or Hero Mavrick 440, fitment is not confirmed in the provided applicability record. Please verify by VIN / EPC / old part match before ordering.

Why Buy From Under The Hood

• Clear identification of OEM drive-line parts
• Helpful distinction between front sprocket, rear sprocket, and full chain kit
• Better buyer-language naming for easier search and ordering
• Useful for owners and workshops replacing worn driveline parts

FAQs

1. What is HDH23801-ABY-000?
It is the OEM part listed as SPROCKET DRIVE 1ST, best understood in buyer language as the front sprocket / countershaft sprocket.

2. Which bikes is this confirmed for?
This part is confirmed for Harley-Davidson X440, Harley-Davidson X440 OBDII, and Harley-Davidson X440T.

3. Will it fit X440X?
Please verify by VIN / EPC / old part match before ordering. X440X is not confirmed in the provided applicability list.

4. Will it fit Hero Mavrick 440?
Please verify before ordering. Mavrick 440 is not confirmed in the provided applicability list.

5. Is this the rear sprocket?
No. This is the front sprocket, also called the countershaft sprocket or engine sprocket.

6. Is this sold with chain and rear sprocket?
No. This listing is for one front sprocket only unless otherwise stated.

7. What should be checked before ordering?
Please confirm the exact bike variant, old part match, and whether you need only the front sprocket or a full chain-sprocket replacement.