Product Features

• Structure: Precision-machined from high-strength alloy steel, with a hardened surface to resist wear. It features a splined drive end and a precision-ground journal for smooth rotation.

• Performance: Transmits torque to drive the inner rotor of the oil pump, maintaining a consistent oil flow and pressure even under high engine loads. The hardened surface ensures long service life and resistance to abrasion from engine oil contaminants.

• Design: Factory-calibrated to match the original pump’s internal tolerances, ensuring perfect alignment and efficient oil pumping.

Core Function

• Transmits rotational power from the crankshaft to the oil pump’s inner rotor, driving the pump to circulate engine oil.

• Maintains the precise alignment of the inner rotor, ensuring optimal pump efficiency and consistent oil pressure to lubricate critical engine components.

• The hardened surface resists wear, extending the service life of the oil pump and preventing premature failure.

Inner Rotor Shaft-Oil Pump 200V05105-5000 SINOTRUK – Premium OEM-Grade Replacement

The Inner Rotor Shaft-Oil Pump 200V05105-5000 is the heartbeat of your SINOTRUK engine’s lubrication system. This precision-machined component drives oil circulation through every critical bearing surface, ensuring your heavy-duty powerplant stays cool, clean, and protected under the most demanding operating conditions. Engineered to meet exact OEM dimensional tolerances and surface-hardness specifications, this inner rotor shaft delivers consistent oil pressure from cold start to full-load operation — mile after mile, season after season.

METTLEAD Truck Parts supplies this genuine-equivalent replacement direct from our quality-controlled production lines in China, eliminating middlemen and passing factory-direct savings to fleet operators, distributors, and workshop owners worldwide.

Key Functions and Buyer Benefits

Precision-Engineered Oil Delivery

The inner rotor shaft sits at the core of the gerotor-type oil pump assembly, meshing with the outer rotor to create positive-displacement chambers that draw engine oil from the sump and deliver it at regulated pressure to the main gallery. Part number 200V05105-5000 is manufactured with tight eccentricity control (typically ±0.01 mm) to maintain stable volumetric efficiency above 92% throughout the service interval.

Extended Engine Protection

• High Surface Hardness: Carburized and hardened rotor lobes (HRC 58–62) resist accelerated wear from abrasive particles in oil.
• Optimized Lobe Profile: Multi-lobe geometry minimizes pressure pulsation, reducing cavitation risk at high RPM.
• Dimensional Stability: Heat-treated alloy steel maintains critical clearances even at sustained oil temperatures above 120 °C.
• Direct OEM Interchangeability: Drop-in replacement for SINOTRUK original assemblies — no machining, no adapter kits.

Procurement Advantages

• Factory-Direct Pricing: Eliminate 20–35% distribution markup by sourcing from METTLEAD’s production facility.
• Bulk Order Flexibility: MOQ as low as 5 pieces for trial orders; volume pricing for container-level quantities.
• Fast Lead Time: Standard stock items ship within 3–7 business days; custom orders within 15–20 days.
• White-Label Packaging: Your brand, your box — private-label service available at no extra tooling cost.

Technical Specifications

Application Vehicle Scenarios

The Inner Rotor Shaft-Oil Pump 200V05105-5000 is purpose-designed for SINOTRUK’s heavy-duty lineup equipped with MC-series engines. In real-world operation, this component proves its worth across multiple demanding scenarios:

Long-Haul Logistics (SITRAK C7H / HOWO T7H)

Covering 800–1,200 km daily on intercity corridors, these tractors demand uninterrupted oil pressure at sustained 1,400–1,600 RPM cruising speeds. A worn inner rotor shaft causes gradual pressure drop, leading to premature bearing fatigue. Fleet operators replacing this component preventively at 250,000 km intervals report up to 15% lower unplanned downtime.

Construction and Mining (HOWO A7 Dump Trucks)

Frequent stop-start cycles and high-load hill climbing push oil temperatures past 130 °C. The carburized surface of the 200V05105-5000 rotor shaft resists thermal micro-pitting that commonly degrades softer aftermarket alternatives within 100,000 km.

Concrete Mixer and Special-Purpose Vehicles (SITRAK C5H Chassis)

Continuous PTO operation keeps the engine running at elevated RPM even when the vehicle is stationary. Consistent oil pump performance prevents starvation of turbocharger bearings and timing gear trains during these sustained high-output periods.

Browse our full catalog of compatible engine and lubrication system components at SINOTRUK Truck Parts.

OEM/ODM Capability

METTLEAD Truck Parts operates vertically integrated production lines dedicated to precision engine components. Our OEM/ODM services for the Inner Rotor Shaft-Oil Pump 200V05105-5000 include:

• Strict Quality Control: 100% dimensional inspection using CMM (Coordinate Measuring Machine), surface-roughness testing (Ra ≤ 0.4 μm on sealing faces), and hardness verification on every production batch.
• Custom Packaging: Full white-label service — your brand name, part number, barcode, and multilingual inserts printed on retail-ready packaging.
• Material Certification: Mill certificates and metallurgical reports provided on request for tender-based procurement.
• Sample and Trial Program: Pre-production samples shipped within 10 days for your QC bench-testing and fitment verification.
• Scalable Volume: Monthly capacity supports orders from sample quantities through to 10,000+ pieces for large distributor networks.

Whether you are a regional parts distributor building your own product line or a fleet maintenance division seeking a reliable supply chain partner, our engineering team collaborates with you from drawing approval through final delivery.

Frequently Asked Questions

What causes the Inner Rotor Shaft-Oil Pump 200V05105-5000 to fail prematurely?

The most common failure triggers are contaminated engine oil carrying abrasive particles, extended oil-change intervals beyond OEM recommendations, and running the engine with insufficient oil level. These conditions accelerate lobe-surface wear and increase rotor-to-housing clearance, resulting in measurable oil pressure loss.

How do I know when the Inner Rotor Shaft needs replacement?

Watch for low oil pressure warnings at idle (below 0.1 MPa when hot), increased engine noise from the timing cover area, and metallic debris visible during oil filter inspection. A pressure gauge test at operating temperature will confirm whether the pump assembly — and specifically the inner rotor shaft — has exceeded its wear limit.

Is this Inner Rotor Shaft-Oil Pump 200V05105-5000 compatible with both MC11 and MC13 engines?

Yes. SINOTRUK uses the same oil pump architecture across the MC11 and MC13 engine families. Part number 200V05105-5000 fits both platforms without modification, making it an efficient stock-keeping choice for multi-fleet workshops.

Can I replace only the inner rotor shaft, or must I replace the entire oil pump assembly?

If the outer rotor and pump housing still measure within factory tolerance (typically ≤0.15 mm tip clearance), replacing the inner rotor shaft alone is technically acceptable. However, for engines above 300,000 km, replacing the complete rotor set simultaneously is recommended to restore optimal volumetric efficiency.

What is the typical shelf life and storage requirement for this component?

Stored in its original anti-rust packaging in a dry environment (below 70% relative humidity), the Inner Rotor Shaft-Oil Pump 200V05105-5000 maintains its corrosion protection and dimensional integrity for at least 36 months from production date.

Request Your Quotation Today

Your fleet’s uptime depends on components that perform — and a supply chain that delivers. The Inner Rotor Shaft-Oil Pump 200V05105-5000 SINOTRUK from METTLEAD Truck Parts gives you OEM-matched quality at factory-direct pricing, backed by rigorous inspection and flexible logistics.

Ready to secure competitive pricing and priority lead times?

• Share your required quantity and destination for an instant FOB/CIF quotation.
• Request a free product sample for bench-testing and dimensional verification.
• Ask about volume discounts and white-label packaging for your distribution network.

Our dedicated parts consultants respond within 12 hours on business days. Contact Us Now to start your order or discuss custom procurement requirements for your SINOTRUK fleet.

Explore more engine and drivetrain components in our SINOTRUK Truck Parts catalog — your single source for HOWO, SITRAK, and STEYR replacement parts delivered worldwide.