20R-5075 CAT Reman Common Rail Injector – Electromechanical Renewal for C13/C15/C18 Acert Engines | Direct Core-Exchange Replacement
1. Product: 20R-5075
2. Compatible Equipment: Diesel Fuel Injection Systems
3. Manufacturer: Aftermarket OEM Replacement
4. Condition: Brand New, Fully Tested
5. Origin: ABOSEDE Diesel
6. Shipping period: 3-5 business days
7. Payment terms: T/T, Western Union, PayPal
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Product Introduction
When an injector ages, the obvious wear is mechanical: plunger‑barrel clearance widens, the needle seat erodes, and internal leakage rises. But there is a less visible degradation occurring simultaneously-the electromechanical performance of the solenoid. Over thousands of hours, the coil insulation breaks down, armature friction increases, and magnetic hysteresis alters the opening delay. The 20R‑5075 remanufactured injector addresses both domains. It not only restores all mechanical clearances to original specifications but also completely renews the solenoid assembly with a modern, high‑temperature coil and a newly machined armature. This dual renewal ensures that the injector's flow accuracy and timing response are restored to factory‑fresh levels, not just in terms of fuel quantity but also in the consistency of its electrical‑to‑mechanical conversion. For fleets running C13, C15, or C18 Acert engines, the 20R‑5075 offers a renewed electromechanical system that performs identically to a new injector-without the premium cost.
📊 Technical Data – Electromechanically Renewed Parameters
| Parameter | Specification |
|---|---|
| Part Number | 20R‑5075 (Caterpillar Reman) |
| Technology | Solenoid‑actuated common‑rail, full electromechanical renewal |
| Maximum Rail Pressure | 2,000 bar (29,000 psi) |
| Nozzle Type | VCO (Valve Covered Orifice) – 8 × ø0.18 mm orifices |
| Spray Cone Angle | 150° (±1.5°) |
| Needle Lift | 0.30 mm (restored to nominal) |
| Solenoid Resistance (pull‑in) | 0.85 – 1.0 Ω @ 20°C (new coil) |
| Hold Current | 5.0 – 6.0 A (PWM controlled) |
| Dynamic Flow Rate | 580 – 620 cc/min @ 100 bar test pressure |
| Opening Delay (after reman) | ≤ 145 µs (new‑part specification) |
| New Solenoid Insulation | Polyimide‑amide (PAI), rated to 200°C continuous |
| Internal Leakage (after reman) | ≤ 5.5 cc/min at idle |
| Connector | 2‑pin Deutsch, gold‑plated (new) |
⚙️ The Electromechanical Renewal – More Than a Coil Replacement
The 20R‑5075's remanufacturing process includes a complete solenoid system rebuild, not just a visual inspection:
New coil winding – The original coil is removed entirely and replaced with a polyimide‑amide (PAI) insulated winding. This material offers superior thermal stability and resistance to fuel vapour attack compared to the earlier polyester‑imide insulation, which often becomes brittle after 8,000 hours.
Armature re‑machining – The moving armature is reground to restore its cylindrical geometry and surface finish (Ra 0.2 µm), eliminating the wear grooves that increase sliding friction and delay response. A new anti‑stick coating (nickel‑PTFE composite) is applied to reduce magnetic hysteresis.
Magnetic circuit validation – After reassembly, the solenoid's pull‑in force is measured against a reference magnet. If it falls below 95% of the new‑part specification, the magnet is replaced or the circuit is adjusted.
Response time verification – Each injector is subjected to a 100‑pulse test to confirm that the opening delay is consistently ≤ 145 µs across all pulses-a stricter tolerance than many new injectors from the same era.
This level of electromechanical renewal is rarely performed by independent rebuilders, who typically only replace the coil if it shows open‑circuit failure. The 20R‑5075's comprehensive approach ensures that the injector's timing behaviour is as accurate on day one of its second life as it was on day one of its first.