Diesel Engine Flywheel 6HH1 3021394 for Heavy-Duty Applications

Product Details

Product Overview

This is a brand-new, direct-replacement diesel engine flywheel, specifically designed for the 6HH1 engine platform. The flywheel, identified by part number 3021394, is a critical component in the engine’s powertrain, responsible for storing rotational energy, smoothing out power delivery, and providing a mounting surface for the clutch or torque converter.

Manufactured to meet OEM specifications, this flywheel ensures a precise fit and reliable performance for 6HH1 series engines commonly found in heavy-duty trucks, industrial machinery, and construction equipment. As a high-wear rotating assembly part, choosing a quality replacement is essential for maintaining engine balance and driveline integrity.

This unit is sourced from a professional supply chain based in Chongqing, China, a major hub for diesel engine component manufacturing, ensuring competitive pricing without compromising on the core technical requirements for your engine rebuild or repair project.

Key Features & Benefits

• Precision Fit for 6HH1: Specifically machined for the 6HH1 engine model, ensuring correct bolt pattern, pilot bore, and ring gear alignment.
• OEM Part Number 3021394: Direct cross-reference to the original equipment part number, simplifying ordering and verification for parts managers and mechanics.
• Durable Construction: Designed to withstand the high torsional loads and heat generated by heavy-duty diesel operation, extending service life compared to worn or substandard units.
• Engine Balance Assurance: Manufactured to strict balance tolerances to prevent vibration, which can damage the crankshaft, transmission input shaft, and bearings.
• New Condition: Zero hours of service. No core charge or return of old part required, reducing downtime for your repair shop or fleet maintenance.
• Versatile Application: Suitable for a wide range of industrial applications including manufacturing plants, machinery repair shops, and energy & mining sectors where 6HH1 engines are deployed.

Technical Specifications

OEM Cross-Reference

This flywheel is a direct replacement for the following original equipment manufacturer (OEM) number(s):

• Part Number: 3021394

Note: Always verify the part number on your existing flywheel or consult your engine’s parts manual to confirm compatibility before purchase.

Compatibility

This flywheel is specifically designed for the 6HH1 diesel engine. It is commonly used in the following types of equipment:

• Medium to Heavy-Duty Trucks
• Construction & Earthmoving Machinery
• Industrial Generator Sets
• Agricultural Tractors & Harvesters
• Marine Propulsion Systems (where applicable)

Compatibility Note: Fitment is inferred based on the engine model. Please check the bolt pattern, ring gear tooth count, and pilot bore diameter against your original part to ensure a correct match for your specific application.

Global Supply & Distribution

We provide efficient logistics solutions to serve B2B buyers worldwide. Our distribution network supports fast and reliable shipping to major industrial centers and ports globally.

• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands), Southeast Asia (Thailand, Indonesia, Vietnam), Middle East (UAE, Saudi Arabia), South America (Brazil, Chile), and Africa.
• Shipping Options: Express (DHL, FedEx, UPS) for urgent small orders, Air Freight for medium-weight shipments, and Sea Freight (FCL/LCL) for bulk orders to reduce per-unit costs.
• Export Experience: Our team is experienced in international trade documentation, customs clearance, and ensuring parts reach your workshop or warehouse safely and on time.

Quality Assurance

We are committed to providing reliable replacement parts for the global aftermarket.

• Manufacturing Standards: Components are produced in ISO-certified facilities, adhering to strict quality control processes during casting, machining, and finishing.
• Warranty: This product comes with a 6-month warranty against manufacturing defects in materials and workmanship under normal operating conditions.
• Inspection: While a machinery test report is not available for this individual unit, standard quality checks for dimensional accuracy and surface finish are performed prior to packaging.

FAQ

Q: Is this flywheel a direct bolt-on for my 6HH1 engine?
A: Yes, this flywheel (part 3021394) is specifically manufactured as a direct replacement for the 6HH1 engine. It should bolt directly to the crankshaft flange and accept the standard clutch assembly. However, we always recommend comparing the bolt pattern and pilot bore diameter with your old flywheel to confirm compatibility for your specific engine variant.

Q: Does this flywheel come with the ring gear installed?
A: The flywheel is supplied as a complete unit with the starter ring gear already installed and shrunk-fit onto the flywheel body. It is ready for installation. Ensure your new starter drive engages properly with the ring gear teeth.

Q: What maintenance is required for the flywheel during installation?
A: Before installation, thoroughly clean the mating surface on the crankshaft flange. Always use new flywheel bolts torqued to the manufacturer’s specifications (consult your service manual for the correct torque value and tightening sequence). It is also a good practice to inspect the pilot bearing in the center of the flywheel and replace it if worn.