SPARKLING Main Hydraulic Pump Assembly 551-1122 for Komatsu E330 E330GC Excavator Replacement Pump

   Your Caterpillar 330/330GC’s hydraulic power stability and operational endurance start here. 
   Now, we’re proud to present the CATERPILLAR HIGH-QUALITY EXCAVATOR PARTS MADE IN CHINA NEW 330 330GC 551-1122 HYDRAULIC PUMP by SPARKLING MACHINERY. Next, we’ll cover its core strengths: 2-model compatibility, stable high-pressure output, strict quality, pro support, and cost-effective reliability—helping you maximize your equipment’s hydraulic performance.

The SPARKLING MACHINERY NEW 330 330GC 551-1122 HYDRAULIC PUMP Photo:

   And first—thank you so wholeheartedly, from the bottom of our hearts, for choosing SPARKLING MACHINERY’s 551-1122 Hydraulic Pump for your Caterpillar 330 or 330GC excavator! Your trust fuels our commitment to Caterpillar’s strict hydraulic system standards. 
   This hydraulic pump is your excavator’s "hydraulic power core"; a faulty one risks weak actuator movement, uneven operation, or system breakdowns. Ours matches Caterpillar’s original specs perfectly—you can depend on it fully. Let’s explore why it’s the ideal fit for your machine.

   Why choose the SPARKLING NEW 330 330GC 551-1122 Hydraulic Pump?
   - Direct-fit compatibility: Custom-engineered for Caterpillar 330/330GC’s hydraulic system interfaces, mounting brackets, and drive connections. Marked 551-1122, it aligns seamlessly with existing hydraulic setups—no modification, adapter use, or circuit adjustments. Cuts replacement downtime by 37%, getting your Caterpillar excavator back to heavy-duty operation faster.
   - Precision control: Features ultra-accurate pressure regulation (deviation <1.2% from Caterpillar’s rated specs) and consistent flow output (no sudden drops), maintaining hydraulic pressure within the 40-45MPa optimal range. Ensures reliable performance for mining-site heavy loads or construction-site high-intensity excavation—to avoid operational inefficiencies.
   - Rigorous quality: Undergoes 29+ strict tests—high-pressure durability (48MPa for 2,700+ hours without leakage), high-low temperature cycles (-30°C to 100°C, 1,250+ cycles), wear resistance (4,300+ working hours), and impact resistance (1,100N impact without structural damage). Withstands dusty construction/mining environments, mechanical vibration, and hydraulic shock without component failure or seal leakage.
   - Professional support: Backed by a dedicated team with deep expertise in Caterpillar 330/330GC hydraulic systems. Offers 7×24 online assistance, including step-by-step installation guides (mounting torque charts, oil filling tips), maintenance recommendations (filter replacement intervals, hydraulic oil grade checks), and troubleshooting for low pressure or abnormal noise. Average response time <2 hours.
   - Cost-effective reliability: Delivers Caterpillar OEM-level hydraulic performance at a competitive price. High-strength rotor components and wear-resistant seals extend service life by 74% vs. generic pumps, reducing long-term replacement costs by 44%. Minimizes unplanned downtime from hydraulic system failures—preventing costly project delays or equipment damage.

   About SPARKLING MACHINERY:
   - Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.

   Get In Touch:
   - Replace your failing ECU confidently. Contact SPARKLING for pricing, lead time, and technical support — restore optimal machine control quickly and reliably.