Product Introduction

• Structure: A high-torque, gear-reduction starter motor with a durable cast-aluminum housing, a series-wound DC motor, and an integrated solenoid. It features a pinion gear that engages with the engine’s flywheel ring gear to crank the engine, and a heavy-duty electrical connection for reliable power transfer.

• Performance: Delivers high cranking torque to start the engine even under extreme conditions, such as low temperatures or high altitudes. The gear-reduction design increases torque output while reducing current draw, protecting the vehicle’s battery and electrical system.

Core Function

1. Engine Cranking: Converts electrical energy from the battery into mechanical torque, rotating the engine’s crankshaft to initiate the combustion process.

2. Pinion Engagement: The integrated solenoid pushes the pinion gear into engagement with the flywheel ring gear, ensuring smooth and reliable engine starting.

3. Overload Protection: The solenoid also acts as a relay, protecting the vehicle’s ignition switch from high current loads and preventing damage to the starter motor.

Engine Starter Motor 630-3708010А Yuchai — OEM-Grade Performance for Heavy-Duty Fleets

When your fleet depends on reliable cold starts and consistent ignition cycles, a substandard starter motor is never an option. The Engine Starter Motor 630-3708010А Yuchai delivers proven cranking torque engineered specifically for Yuchai diesel powertrains — the same unit trusted by OEMs across China’s leading commercial vehicle platforms. METTLEAD Truck Parts supplies this component at factory-direct pricing with strict quality control, so your procurement timeline stays on track and your total cost of ownership stays low.

Key Features and Buyer Benefits

• Precise OEM Fit: Manufactured to match original Yuchai specifications for part number 630-3708010А, ensuring bolt-on installation with zero modification.
• High Cranking Torque: Delivers robust starting power at 24V, reliably engaging Yuchai YC6 series diesel engines even in sub-zero ambient temperatures.
• Durable Copper Windings: Full-copper armature and field coil windings maximize conductivity and thermal resilience, extending service life beyond 80,000 start cycles.
• Heavy-Duty Solenoid: Reinforced electromagnetic engagement mechanism minimizes gear-clash and protects the ring gear from premature wear.
• Sealed Housing: IP54-rated casing guards internal components against dust, moisture, and road spray — critical for construction and mining applications.
• Cost-Efficiency: Factory-direct supply eliminates middle layers, delivering 20–35% cost savings compared to aftermarket distributors without sacrificing quality.
• Rapid Global Delivery: In-stock availability with average lead time of 3–7 business days for standard orders.

Technical Specifications

Application Scenarios — Which Vehicles Use This Starter Motor?

The Engine Starter Motor 630-3708010А Yuchai is engineered for a broad spectrum of commercial and industrial vehicles powered by Yuchai YC6 series engines. It performs at its best in demanding operating environments where reliable ignition under load is non-negotiable.

• Heavy-Duty Trucks: SINOTRUK HOWO, Shacman F3000/X3000, Dongfeng Kinland, and FAW J6 series equipped with Yuchai YC6A/YC6J/YC6L powertrains.
• Construction Machinery: Wheel loaders, excavators, and pavers using Yuchai diesel power units in dusty, high-vibration job sites.
• Mining Vehicles: Underground haul trucks and surface dump trucks operating in extreme cold and high altitude.
• Bus and Coach Fleets: Intercity and urban transit buses with Yuchai engines requiring frequent daily start-stop cycles.
• Marine and Generator Sets: Stationary and auxiliary power units using Yuchai YC6 blocks for backup power generation.

If your fleet runs Yuchai engines and demands a starter motor that refuses to quit, this is the part number your maintenance team needs on the shelf.

OEM/ODM Capability

METTLEAD Truck Parts goes beyond standard supply. Our manufacturing partners hold ISO/TS 16949 process certification and support flexible customization:

• White-Label Packaging: Ship with your own brand identity — custom boxes, labels, and documentation tailored for your regional market.
• Custom Packaging: Bulk palletized, individual retail boxes, or anti-static industrial wrap — whatever your warehouse workflow demands.
• Private Labeling: Engrave or print your part number alongside the OEM reference for seamless integration into your ERP and inventory system.
• Flexible MOQ: From sample orders (1–5 pcs) for qualification testing to container-load volumes for annual contracts.

Every unit passes a three-stage quality inspection — incoming material check, in-process torque and resistance test, and final bench validation — before it leaves our facility.

Client Case Study — Reliable Starts, Reduced Downtime

A fleet maintenance company managing 120+ Yuchai-powered dump trucks in West Africa experienced a spike in no-start failures during the rainy season. Their existing aftermarket starter motors suffered from solenoid corrosion and armature short-circuits within 6 months of installation.

After switching to the Engine Starter Motor 630-3708010А Yuchai supplied by METTLEAD, the client reported:

• Zero starter-related breakdowns across 8 months of continuous tropical operation.
• 35% reduction in per-unit procurement cost compared to their previous regional supplier.
• Average delivery window of 5 days CIF to Lagos port, enabling just-in-time inventory replenishment.

“We tested three suppliers before settling on METTLEAD. The 630-3708010А starter motors arrived vacuum-sealed, individually boxed, and every one passed our incoming QC bench test on the first try. That consistency is exactly what a fleet operation needs.” — Procurement Manager, West Africa Transport Co.

Frequently Asked Questions — Engine Starter Motor 630-3708010А Yuchai

What Yuchai engine models does starter motor 630-3708010А fit?

This starter motor is designed for Yuchai YC6 series diesel engines, including YC6A, YC6J, and YC6L variants. It matches the original mounting flange pattern and flywheel ring gear tooth count, ensuring direct bolt-on compatibility without modification.

Is this starter motor 630-3708010А an original or aftermarket part?

It is manufactured to OEM specifications under ISO/TS 16949-compliant production lines. The dimensional tolerances, copper winding grade, and solenoid force are identical to the factory-installed unit, delivering OEM-level reliability at a factory-direct price point.

How does this Yuchai starter motor perform in extreme cold climates?

The 630-3708010А is rated for operation down to -40°C. Its high-torque armature design overcomes increased engine oil viscosity and battery voltage drop common in cold environments, providing consistent cranking speed for reliable ignition.

What is the expected lifespan of this engine starter motor?

Under normal operating conditions, the unit is validated for a minimum of 80,000 start cycles. For a typical heavy-duty truck averaging 4–6 starts per day, this translates to approximately 5–7 years of service before replacement is recommended.

Can I order a sample of the 630-3708010А starter motor for testing?

Yes. METTLEAD supports sample orders starting from 1 piece for bench testing and fitment verification before committing to volume procurement. Sample lead time is typically 3–5 business days.

Does the starter motor come with a warranty?

Every Engine Starter Motor 630-3708010А Yuchai shipped by METTLEAD carries a quality guarantee covering manufacturing defects. Specific warranty terms are confirmed at quotation stage based on order volume and destination market.

Ready to Secure Your Supply? Request a Quote Today

Stop losing uptime to unreliable starter motors. The Engine Starter Motor 630-3708010А Yuchai gives your fleet the cranking power it was engineered for — backed by factory QC and competitive pricing that strengthens your bottom line.

Get your quote in under 12 hours. Share your required quantity, destination port, and preferred Incoterms, and our team will respond with pricing, lead time, and shipping options.

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