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The Fuel Feed Pump (Low-Pressure Supply Pump) with OEM number 092100-1540 (also listed as 0921001540) is a verified OEM-grade replacement for Mitsubishi 4D32 diesel engines. Manufactured by Denso to stringent OEM specifications, this mechanical pump is a critical component of the diesel fuel system.
OEM Specification — Verified by Denso manufacturer branding and OEM part numbers 092100-1540, 0921001540, ME703397
Proven Durability — Built with wear-resistant materials by Denso to withstand continuous operation
Installation Success Rate — 99% direct bolt-on fitment for compatible Mitsubishi 4D32 engine applications
If your fuel feed pump is failing, you may experience one or more of the following symptoms:
Hard Starting / Extended Cranking: Engine takes longer than normal to start due to insufficient fuel pressure reaching the injection pump
Loss of Engine Power: Significant reduction in power and acceleration, especially under load
Engine Stalling / Rough Running: Intermittent stalling or rough idle due to inconsistent fuel supply
Frequent Need for Priming: Pump does not build sufficient firmness, or you frequently need to bleed air from the fuel system
Visible Fuel Leakage: Fuel seeping from the pump body indicates worn internal seals
⚠️ Important: A failing fuel feed pump can lead to progressive power loss, engine stalling, and costly injection pump damage. Prompt replacement is essential to maintain fuel system integrity and engine reliability.
Vehicle & Engine Compatibility
Brand
Model / Engine
Application
Notes
Mitsubishi
Engine 4D32
Industrial / Agricultural / Automotive
Primary application
CAT
Excavators E70, E70B
Construction Equipment
Compatible
⚠️ Compatibility Notes:
This fuel feed pump is designed for Mitsubishi 4D32 diesel engines and CAT E70/E70B excavators
This is a mechanical low-pressure feed pump that supplies fuel to the main injection pump — not an electric in-tank pump
The ME703397 is a cross-reference number used in some Mitsubishi parts catalogs
Please verify your engine model, equipment model, and original pump part number before ordering
Features & Benefits
OEM Specification — Denso Guarantees factory-fit quality and performance — verified by Denso manufacturer branding and OEM part numbers
Mechanical Feed Pump Design Delivers reliable, consistent fuel flow without reliance on electrical systems
Wear-Resistant Internal Components Provides extended service life under continuous operation
Direct Bolt-On Fitment No modifications required — engineered as a direct match for the original pump
100% New — No Core Charge Guarantees zero wear, immediate fuel delivery, and full service life
Quality Control & Verification
QC Item
Verification Method
Dimensional Accuracy
Precision inspection to verify all mounting points and sealing surfaces match OE blueprint specifications
Fuel Flow Rate Test
Bench testing to verify fuel delivery volume meets OEM specifications for 4D32 engines
Pressure Test
Pressure testing to verify output pressure meets OEM specifications
Seal Integrity Test
100% leak test to guarantee zero fuel leakage
Durability Cycle Test
500+ hour fatigue testing to verify long-term reliability
Final Assembly Inspection
100% visual and functional inspection before packaging
Installation & Maintenance Recommendations
⚠️ IMPORTANT: Professional Installation Recommended
Pre-Installation Checklist:
Ensure the engine is cool before starting work
Depressurize the fuel system before disconnecting fuel lines
Clean the area around the pump to prevent contamination
Inspect fuel lines for cracks or damage — replace if necessary
Disconnect the fuel inlet and outlet lines from the old pump
Remove the mounting bolts securing the pump to the engine
Remove the old pump assembly
Clean the mounting surface thoroughly
Install the new pump with a new gasket (if applicable)
Torque mounting bolts to manufacturer's specified torque settings
Reconnect fuel lines securely
CRITICAL: Prime the fuel system by operating the priming pump until fuel flows free of air bubbles
Start the engine and check for fuel leaks
Check for proper fuel flow and engine operation
Maintenance Schedule:
Inspection: Every 500 hours of operation or during routine fuel system service. Check for fuel leaks, hard starting, or loss of power
Replacement: Immediately if failure symptoms appear
Note: The 4D32 engine's mechanical injection system is known for its simplicity and reliability, but the fuel feed pump should be replaced proactively to prevent fuel system issues
Packaging & Supply
Packaging: Each fuel feed pump is securely packed in protective packaging to prevent shipping damage
Warranty: 12 months
Suitable for: Wholesale distributors, engine rebuild shops, construction equipment service centers, and fleet owners
Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ... Yimi (Guangzhou) Automotive Parts Co., Ltd.
Located in Guangzhou—the economic and transportation hub of Southern China—we are a specialized supplier and exporter with over 20 years of experience in the automotive parts industry. We focus on the production and sales of high-quality ...
