Hero Genuine Standard Engine Piston for HF Deluxe | 13101AAF00099S

Hero Genuine Standard Engine Piston – 13101AAF00099S

This listing is for the Hero Genuine Standard Engine Piston identified by exact part number 13101AAF00099S. Select this component by complete part number and chassis/VIN-based EPC confirmation—not by visual similarity, shared engine capacity or a broad model-family name.

Confirmed Compatibility

Compatibility is limited to the exact EPC-supported applications listed below. Do not assume compatibility with another model, generation or variant merely because the component looks similar or shares an engine family.

• Hero HF Deluxe (Dec 2022)

Fitment Note / Return Prevention Note

• Match every letter, number and suffix in the SKU.
• Confirm the exact motorcycle or scooter model, variant, production generation and applicable EPC assembly.
• Compare the old part's side, connector, mounting points, dimensions and surrounding components before opening the package.
• Do not install, energise, fill, lubricate, machine or modify the component merely to test compatibility.
• Installed, electrically tested, fuel-exposed, oil-exposed, marked, scratched or modified parts cannot be treated as unused returns.

What This Product Is

• Hero Genuine standard-size engine piston
• Official description: Piston
• Hero retail part number: 13101AAF00099S
• Catalogue-format part number: 13101-AAF-00099
• Common buyer names: standard piston, engine piston, piston STD and bare piston
• Engine location: cylinder bore and crankshaft/connecting-rod assembly
• Size specification: standard / STD
• Catalogue quantity: one piston per compatible engine
• Supply form: one manufacturer-packed bare piston

Key Features

• Genuine Hero internal-engine component
• Standard-size specification for compatible original-bore applications
• Designed for the matching AAF-series piston ring, pin and cylinder arrangement
• Transfers combustion force through the piston pin and connecting rod
• Machined ring grooves for the specified matching piston ring set
• Suitable replacement when the original matching piston is worn, damaged or outside service limits
• Exact OEM part-number matching reduces standard-versus-oversize ordering errors
• Better fitment confidence than choosing a piston only by visual appearance
• One bare standard piston supplied
• Current Hero MRP reference: ₹410 inclusive of taxes

What You Will Receive

• 1 × Hero Genuine standard-size piston
• Part number: 13101AAF00099S
• One manufacturer-packed bare piston

Not included:

• Piston ring set
• Piston pin
• Piston-pin clips
• Cylinder block
• Connecting rod
• Crankshaft assembly
• Connecting-rod bearings
• Timing sprocket or Woodruff key
• Cylinder-head gasket
• Cylinder-base gasket
• Engine oil
• Cylinder honing, boring or machining
• Installation labour

Technical Details

Installation Note

Piston replacement requires complete internal-engine dismantling, precision measurement and correct component orientation. Installation should be performed by a trained motorcycle engine technician.

Before Installation

• Confirm the old and new piston part numbers
• Confirm that the engine requires the standard-size piston
• Measure the cylinder bore at the prescribed heights and directions
• Check bore wear, taper, ovality and scoring
• Measure the replacement piston at the specified measuring point
• Calculate piston-to-cylinder clearance
• Inspect and measure the piston ring grooves
• Check the matching ring set and ring end gaps
• Inspect the piston pin and connecting-rod small end
• Check crankshaft and connecting-rod condition
• Identify the piston’s correct installation direction and markings

During Installation

• Use only the matching standard-size ring set
• Install rings in the correct grooves and orientation
• Do not force, hammer or drop the piston
• Lubricate the piston, pin, rings and cylinder with clean specified engine oil
• Fit the piston in the correct direction
• Use a serviceable or new model-correct piston pin where required
• Install new piston-pin clips according to the service procedure
• Confirm each clip is fully seated and correctly oriented
• Use a proper ring compressor when inserting the piston into the cylinder
• Replace disturbed gaskets and seals
• Follow all model-specific tightening sequences and torque values

After Installation

• Rotate the engine manually before starting
• Refill with the specified engine oil
• Confirm adequate lubrication
• Check engine compression
• Listen for piston slap, knocking or abnormal mechanical noise
• Check for blue smoke and oil leakage
• Monitor engine temperature
• Follow the technician’s recommended running-in procedure

Buyer-Focused FAQs

How should fitment be confirmed?
Match the complete part number with the motorcycle's chassis/VIN-based Hero EPC. A shared model name, appearance or engine capacity is not enough.

Can the part be installed only to check compatibility?
No. Confirm the EPC, physical design and related assembly before opening or installation.

What will be supplied?
One Hero Genuine component under part number 13101AAF00099S, subject to the exact contents of the sealed manufacturer package.