Main Part Number: R5235575 (R523557)
Cross Reference Number: 5235575, EX635575
Product Type: Electronic Unit Injector (EUI)
Applicable Engine: Detroit Diesel Series 60 12.7L DDEC III (Pre‑1998)
Applicable Equipment: Heavy‑duty highway trucks, passenger buses, commercial vehicles
Material: Heavy‑duty wear‑resistant alloy steel
Process: Solenoid performance test, fuel delivery calibration, atomization test, high‑pressure tightness test, fatigue screening
Condition: 100% Brand New Aftermarket OEM Quality
Warranty: 12 Months
MOQ: 1 Piece (Support Sample & Bulk Wholesale)
Packing: Neutral Independent Packaging, Custom Private Label Supported
Key Features
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Precise Electronic Fuel Metering: Qualified solenoid assembly ensures accurate ECU signal response, consistent fuel delivery per cylinder, stable engine running under variable load.
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Reliable Heavy‑Duty Structure: High‑hardness alloy nozzle and reinforced spring assembly, anti‑wear and anti‑fatigue, adapt to long‑haul heavy‑load working scenarios.
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Uniform Fuel Atomization: Precision‑machined nozzle holes produce fine spray, promote full combustion, reduce black smoke and carbon accumulation.
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Strict OEM Dimension Standard: 1:1 match original installation size and electrical parameters, direct plug‑in replacement, no modification required.
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Cost‑Effective Fleet Maintenance: Stable performance for heavy‑duty commercial vehicles, greatly reduces overall maintenance cost for truck fleets.
Solvable Common Faults
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Engine insufficient power, poor climbing performance and slow acceleration
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Heavy black smoke emission under heavy load and acceleration
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High fuel consumption and incomplete diesel combustion
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Rough idle, engine shaking and intermittent misfire
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Difficult cold start and extended cranking time
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Injector internal leakage, solenoid malfunction and related engine fault codes
Why Choose Us
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✅ Professional supplier for Detroit Diesel heavy‑duty EUI injectors, focus on Series 60 engine spare parts
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✅ Every injector finished with full‑range bench testing: solenoid, fuel quantity, atomization and sealing inspection
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✅ Strict OEM specification, good interchangeability for heavy‑duty truck and bus overhaul
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✅ Flexible order support: sample test, small‑batch retail and large‑volume fleet wholesale
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✅ Adequate stock, fast global shipping with neutral package
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✅ Custom private label service and professional heavy‑duty parts technical support
FAQ
Q1: What engine does R5235575 injector fit?
A1: R5235575 EUI injector is designed for Detroit Diesel Series 60 12.7L DDEC III engine (pre‑1998), widely used on heavy‑duty trucks and buses.
Q2: What cross‑reference part numbers are available?
A2: Cross reference numbers: 5235575, EX635575, fully interchangeable with original unit.
Q3: What symptoms indicate injector replacement?
A3: Typical symptoms include power drop, black smoke, high fuel consumption, rough idle, misfire and hard cold start caused by worn nozzle or failed solenoid.
Q4: What about quality and warranty?
A4: All injectors pass multi‑item bench tests before shipment, stable heavy‑duty performance, covered by 12‑month warranty.
