Product Features

• Structure: A two-piece assembly consisting of a high-strength cast iron core (red-painted section) and a precision-machined steel friction ring (silver outer ring). The center hub features multiple mounting holes for connection to the crankshaft and clutch.

• Performance: The cast iron core provides high inertia to smooth engine power delivery, while the hardened steel friction ring withstands the high pressure and heat of clutch engagement. Precision machining ensures a flat, balanced surface for reliable clutch operation.

• Design: Factory-balanced to minimize vibration, with direct-fit mounting holes for easy installation. The friction ring is replaceable, extending the service life of the flywheel assembly.

Core Function

• Stores rotational energy from the engine’s power strokes, releasing it during the compression strokes to maintain smooth engine operation and prevent stalling at low RPM.

• Provides a friction surface for the clutch disc, enabling power transfer between the engine and transmission.

• Drives the starter ring gear (typically mounted on its outer circumference) to crank the engine during startup.

Flywheel 61500020220 for SINOTRUK HOWO – OEM-Grade Engine Flywheel Direct from China

When your SINOTRUK HOWO heavy-duty truck demands a flywheel that delivers flawless power transmission, precise crankshaft balance, and uncompromising durability, the Flywheel 61500020220 stands ready to perform. Engineered to OEM specifications for the Weichai WD615 engine series, this flywheel ensures smooth clutch engagement, reduced torsional vibration, and extended drivetrain life — keeping your fleet on the road and your maintenance costs under control.

Key Features & Benefits of Flywheel 61500020220

• OEM-Matched Precision: Manufactured to exact SINOTRUK original specifications (Part No. 61500020220), guaranteeing perfect fitment with zero modification required.
• Superior Material Composition: Cast from high-grade gray iron (HT250/HT300) with optimized carbon content, delivering exceptional heat resistance and anti-cracking performance under heavy loads.
• Dynamic Balancing: Each flywheel undergoes precision dynamic balancing to minimize vibration, protecting your crankshaft bearings and extending engine service life.
• Heat Dissipation Engineering: The friction surface is machined to a fine finish (Ra 1.6–3.2μm), promoting efficient heat dissipation during clutch engagement and reducing premature clutch disc wear.
• Ring Gear Integration: Pre-fitted with a hardened starter ring gear (typically 126 teeth), heat-shrunk for a secure interference fit that withstands thousands of start cycles.
• Cost-Effective Fleet Maintenance: Factory-direct pricing from JINAN METTLEAD AUTO SALES CO.LTD. means you get OEM quality without the OEM markup — ideal for bulk procurement.

Technical Specifications – Flywheel 61500020220 SINOTRUK HOWO

Application Scenarios – Which Vehicles Use Flywheel 61500020220?

The Flywheel 61500020220 is the heartbeat of the drivetrain in multiple SINOTRUK HOWO configurations. Whether your trucks are hauling construction aggregates across rugged terrain or delivering goods on long-haul intercity routes, this flywheel handles the torque demands with confidence.

• SINOTRUK HOWO 6×4 Dump Trucks – Heavy earthmoving and mining operations where frequent start-stop cycles punish inferior flywheels.
• SINOTRUK HOWO 8×4 Cargo Trucks – Long-distance freight transport requiring smooth clutch engagement under full payload.
• SINOTRUK HOWO Tractor Heads (371HP / 375HP / 380HP) – Container haulage and logistics fleets demanding reliable power transfer to the transmission.
• SINOTRUK HOWO Concrete Mixer Trucks – Continuous PTO-driven operations where flywheel balance directly impacts mixer drum performance.
• Compatible Weichai WD615-powered vehicles from SITRAK, Steyr-series, and select SHACMAN models sharing the same engine platform.

Explore our full range of SINOTRUK Truck Parts to find matching clutch assemblies, crankshafts, and engine components for your fleet.

OEM/ODM Capability & Custom Packaging

JINAN METTLEAD AUTO SALES CO.LTD. goes beyond simply supplying parts — we become your sourcing partner in China. Our OEM/ODM capabilities include:

• White-Label Packaging: We supply flywheels under your own brand identity with custom box printing, labels, and documentation — perfect for distributors building their private-label parts business.
• Custom Packaging Solutions: Whether you need individual protective packaging for single units or bulk palletized shipments optimized for container loading, we adapt to your logistics requirements.
• Strict Quality Control: Every Flywheel 61500020220 passes through multi-stage inspection — dimensional verification, surface roughness testing, dynamic balance checks, and ring gear fitment validation — before it leaves our facility.
• Flexible Order Quantities: From sample orders for testing to full container loads (FCL) for established distributors, we accommodate your procurement scale.
• Factory Visit Welcome: We invite procurement managers to inspect our quality processes firsthand at our Jinan facility.

Frequently Asked Questions – Flywheel 61500020220

What is the exact function of Flywheel 61500020220 in a HOWO engine?

The flywheel stores rotational kinetic energy from the Weichai WD615 engine’s power strokes, smoothing out the pulsating torque delivery between combustion cycles. It provides the friction surface for clutch disc engagement and carries the ring gear that the starter motor uses to crank the engine. A worn or imbalanced flywheel causes vibration, difficult gear shifts, and accelerated clutch wear.

How do I verify that 61500020220 is the correct flywheel for my truck?

Cross-reference the part number 61500020220 with your vehicle’s engine nameplate (look for WD615.69, WD615.47, or WD615.87 designations). You can also count the ring gear teeth (should be 126T) and measure the bolt pattern (8-hole configuration). If uncertain, send us your VIN or engine serial number and our technical team will confirm compatibility.

What causes a HOWO flywheel to fail prematurely?

Common failure causes include: clutch slippage generating excessive heat (leading to heat cracks on the friction surface), improper torque on mounting bolts (causing runout and imbalance), worn pilot bearings transmitting vibration, and using non-OEM flywheels with incorrect material hardness that cannot withstand thermal cycling.

Is this flywheel supplied with the ring gear pre-installed?

Yes. The Flywheel 61500020220 ships with the 126-tooth starter ring gear already heat-shrunk onto the flywheel body, ready for direct installation. The ring gear is induction-hardened for maximum starter engagement durability.

What is the recommended replacement interval for this flywheel?

Under normal operating conditions, the flywheel itself can last 300,000–500,000 km. However, inspect the friction surface every time you replace the clutch assembly. If you observe heat cracks deeper than 0.5 mm, scoring beyond resurfacing limits, or measurable runout exceeding 0.15 mm, replacement is necessary.

Can this flywheel be resurfaced instead of replaced?

Light surface glazing or minor scoring (under 0.3 mm depth) can be machined on a flywheel grinder, provided the minimum thickness specification is maintained. However, if heat cracks are present or the flywheel has been previously resurfaced, replacement with a new Flywheel 61500020220 is the safer and more cost-effective long-term choice.

Ready to Secure Your Flywheel 61500020220 Supply?

Your fleet’s uptime depends on having the right parts at the right price, delivered on time. JINAN METTLEAD AUTO SALES CO.LTD. offers factory-direct pricing, fast lead times, and the technical expertise to support your SINOTRUK HOWO parts procurement — whether you need 10 pieces or 10,000.

Get your competitive quote today. Tell us your required quantity, destination port, and preferred packaging — our team responds within 24 hours with pricing, lead time, and shipping options.

👉 Contact Us Now to Request a Quote for Flywheel 61500020220