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770990-1 TB25 Turbocharger Replacement for Yuchai 4F100-20
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770990-5001S F30SA-1118100-135This 770990-1 TB25 turbocharger serves as an aftermarket replacement for Yuchai 4F100-20 engines. Designed for B2B buyers, it references OE numbers 770990-5001S and F30SA-1118100-135 to help confirm fitment. Verify part number and engine details before ordering to ensure proper application.
Key Specifications
This TB25 turbocharger assembly is identified by part number 770990-1. It serves as a replacement unit for Yuchai 4F100-20 engines. The package includes the complete turbocharger assembly with standard mounting hardware. Gross weight is approximately 8 kg, and packing dimensions are 21x23x26 cm. These specifications help buyers plan logistics and storage. Verify the physical dimensions against your engine bay space. Check the compressor and turbine inlet sizes. Ensure the flange bolt pattern matches your manifold. Confirm oil line connections before installation.
Application & Compatibility
This TB25 turbocharger is listed for Yuchai 4F100-20 engine applications. Buyers should verify the specific engine variant and production year before ordering. OEM reference numbers 770990-5001S and F30SA-1118100-135 serve as cross-reference guides for identification. Confirm that the mounting flange pattern and oil line connections match your existing unit. Always check the physical dimensions against your engine bay space to ensure proper clearance and fitment.
Technical Notes
The TB25 turbocharger assembly requires careful handling to maintain internal clearances. Inspect the compressor and turbine wheels for damage or debris before installation. Verify that oil supply and drain lines are clean to prevent bearing contamination. Check all gaskets and seals for integrity. Proper lubrication is critical for stable operation. Ensure the actuator related hardware moves freely without binding. Confirm that mounting bolts are torqued to manufacturer specifications. Pre-shipment inspection helps confirm unit condition. Technical support is available for installation guidance.
B2B Supply
LeadTurbo supports B2B buyers with volume pricing for the 770990-1 TB25 turbocharger. Worldwide shipping is available for this 8 kg unit. Technical fitment support helps verify part number 770990-1 against OEM references 770990-5001S and F30SA-1118100-135. Contact our team to confirm application details for Yuchai 4F100-20 engines. We assist with packing dimensions and logistics planning. Ensure all specifications match your requirements before finalizing your order.
Product FAQ
YUCHAI and other product, brand and model names are the property of their respective owners and are used for reference and application-lookup only. LeadTurbo is not affiliated with or endorsed by YUCHAI.
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Frequently Asked Questions
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Complete Turbo Units
Complete turbo units designed for rigorous heavy-duty use where OEM units may fall short.
CHRA / Core Assemblies
Brand-new compatible CHRA cores — like-new performance at a fraction of replacement cost.
Turbine Wheels & Shafts
Precision-balanced turbine shafts engineered from inside out for superior durability.
Turbine Housings
Silicon-molybdenum (Si-Mo) nodular cast iron — engineered for extreme heat resistance.
Compressor Housings
OEM-matched geometry and surface finish — advanced casting and machining for perfect fitment.
Bearing Housings
Rock-solid platform engineered for high-output rebuilds — the foundation for performance.
Compressor Wheels
Aluminum, stainless steel, or titanium alloys — precision machined for superior responsiveness.
