ranroswang@hksparkling.com 
+86 138 2341 8469
SPARKLING CAT 312D Swing Gearbox – Durable Excavator Part
The Caterpillar Swing Reducer (Part No. 333‑3073 / 3333073) is a premium swing gearbox designed to restore smooth and powerful 360° rotation in CAT excavators—compatible with 312D, 312DL, 312D2, 312E, 313D, 313D2, 314C, and 314E models.
It features hardened steel planetary gears, sealed bearings, and robust housing to handle heavy-duty rotational loads while preventing leaks and contamination . Available as genuine OEM or high-quality aftermarket units, this swing reducer ensures a direct-fit replacement and optimized machine performance.
The SPARKLING CAT 312D Swing Gearbox is a high-quality replacement part designed to fit perfectly with your Caterpillar 312D excavator. Manufactured by SPARKLING MACHINERY, a trusted name in excavator components since 2013, this swing gearbox delivers superior performance and durability to keep your machine running smoothly.
This swing gearbox is built with precision and stability in mind. It plays a crucial role in enabling smooth, controlled rotation of the excavator’s upper structure—ensuring efficient digging, lifting, and moving tasks. Thanks to advanced manufacturing processes and stringent quality control, the SPARKLING CAT 312D swing gearbox maintains reliable operation even in tough working conditions.
Choosing SPARKLING ensures you receive a product that combines longevity and cost-effectiveness. Its sturdy construction minimizes wear and tear, helping you avoid costly repairs and downtime. Plus, SPARKLING offers tailored solutions and expert technical support to meet your specific needs, reflecting our commitment to customer satisfaction.
Compatible not only with Caterpillar but also with other leading excavator brands like Komatsu, Hitachi, and Volvo, our swing gearboxes meet or exceed OEM standards. With SPARKLING MACHINERY, you benefit from competitive pricing without compromising quality.
In short, the SPARKLING CAT 312D Swing Gearbox is your reliable partner for maintaining excavator efficiency, extending service life, and optimizing operational costs. Trust SPARKLING to support your business with high-quality parts and continuous service.
Why Choose SPARKLING CAT 312D Swing Gearbox?
- Precise fit for Caterpillar 312D excavators
- Durable construction for long-term use
- Enhances machine stability and smooth motion
- Reduces maintenance frequency and costs
- Backed by expert support and customization options
- Compatible with major excavator brands
Invest in quality and reliability—choose SPARKLING for your excavator parts needs.
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Frequently Asked Questions
Can I get technical support for installing your parts?
Absolutely. We provide technical support and guidance for the installation and maintenance of our parts. Our team is available to assist you with any questions or concerns to ensure proper installation and optimal performance.
What is the lead time for receiving excavator parts?
Our typical lead time depends on the complexity and quantity of the order. For standard parts, delivery usually takes between 7 to 14 days. For custom orders, the lead time may vary, but we always strive to ensure timely delivery.
Do you offer customized parts?
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Yes, we offer tailored solutions to meet specific customer requirements. Whether you need custom dimensions or specialized features, we can design and produce parts that perfectly match your excavator’s needs.
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How do you ensure the quality of your parts?
We follow strict quality control procedures throughout the manufacturing process. Our parts are tested for durability, performance, and precision to ensure they meet industry standards and exceed customer expectations.
If you don’t find your answer, please E-mail us and we’ll be happy to help you out.
CATERPILLAR EXCAVATOR 312D L 312C 313D2 GC 313D2 333-3073 3333073 SWING REDUCER
The Caterpillar Swing Reducer (Part No. 333‑3073 / 3333073) is a premium swing gearbox designed to restore smooth and powerful 360° rotation in CAT excavators—compatible with 312D, 312DL, 312D2, 312E, 313D, 313D2, 314C, and 314E models.
It features hardened steel planetary gears, sealed bearings, and robust housing to handle heavy-duty rotational loads while preventing leaks and contamination . Available as genuine OEM or high-quality aftermarket units, this swing reducer ensures a direct-fit replacement and optimized machine performance.
Made In CHINA SPARKLING MACHINERY HYUNDAI R140W-9S 21Q4-32213 21Q4-32210 HCE MCU CONTROLLER
SPARKLING MACHINERY proudly presents The 21Q4-32213/32210 HCE MCU Control Unit - a premium Made in China OEM-compatible solution specifically engineered for Hyundai R140W-9S excavators. This advanced control module integrates Hydraulic Control Electronics (HCE) with a high-performance 32-bit MCU, delivering precise machine operation through CAN J1939 communication protocol. Designed for extreme conditions, it features an IP67-rated rugged enclosure and operates reliably in -30°C to +75°C environments. With real-time diagnostics and CE/ISO 13849 certification, our unit ensures your excavator maintains peak performance while reducing downtime. Offering plug-and-play replacement with 3-year warranty coverage, it's the smart choice for fleet managers seeking cost-effective, durable alternatives to OEM parts.
SPARKLING MACHINERY TRACK-TYPE TRACTOR CAT D7 558-5127 5585127 VALVE GP-QDR ORIGINAL 27KG
The 558-5127 / 5585127 Valve GP-QDR is a genuine replacement hydraulic control valve designed for CAT D7 Track-Type Tractors. Manufactured to Caterpillar OEM standards and weighing 27KG, this original valve ensures high precision fluid control in demanding construction and earthmoving environments.
As a critical component in the hydraulic control system, the GP-QDR valve regulates the flow and pressure to various functions of the bulldozer, helping to deliver reliable and responsive operational performance. SPARKLING MACHINERY offers this valve as part of our premium product lineup—ideal for equipment owners seeking both authenticity and performance assurance.
HL760-7A WHEEL LOADER R290LC9 R290LC9MH R300LC9S CRAWLER EXCAVATOR 11Q8-22040 CAP-RAIN
The 11Q8-22040 Rain Cap, also known as CAP-RAIN, is an essential protective component designed to shield the exhaust outlet of your heavy machinery from rainwater, debris, and external contaminants. Specifically built for Hyundai HL760-7A Wheel Loader and R290LC-9 / R290LC-9MH / R300LC-9S crawler excavators, this cap ensures the longevity and performance of your exhaust system.
Key Features:
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OEM-spec fitment for perfect compatibility
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Made from corrosion-resistant material for long-term outdoor use
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Prevents water ingress and maintains clean exhaust flow
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Simple to install, durable, and low-maintenance
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Ideal for heavy-duty construction and excavation environments
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.