20R-4179 CAT Reman Common Rail Injector – OE‑Spec Performance with Remanufactured Economy for C15/C18 Engines
1. Product:20R-4179
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
In the world of heavy‑duty diesel, new does not always mean better-and 20R‑4179 proves that point. This is Caterpillar's genuine remanufactured injector, built to the exact same blueprints as the original production unit but delivered at a fraction of the cost. The reman process is not a simple cleaning or re‑sealing; it is a complete mechanical and electronic restoration. Every high‑wearing component-needle, plunger, control valve, and solenoid coil-is replaced with freshly machined parts, while the durable housing is reclaimed and inspected for structural integrity. The result is an injector that delivers 100% of the original flow accuracy, spray angle, and response time, making it indistinguishable from a brand‑new part on a test bench-or in your engine.
📊 Core Technical Data – Reman, Not Reduced
| Parameter | Specification |
|---|---|
| Part Number | 20R‑4179 (Caterpillar Reman) |
| Technology | Solenoid‑actuated common‑rail (Bosch CP‑based) |
| Maximum Rail Pressure | 2,000 bar (29,000 psi) |
| Nozzle Type | VCO (Valve Covered Orifice) with 7 × ø0.185 mm holes |
| Spray Cone Angle | 150° (±1.5°) – tailored for C15/C18 piston bowl |
| Needle Lift | 0.30 mm (full lift) |
| Solenoid Resistance (pull‑in) | 0.9 – 1.2 Ω @ 20°C |
| Hold Current | 5.5 – 6.5 A (PWM controlled) |
| Dynamic Flow Rate | 620 – 660 cc/min @ 100 bar test pressure |
| Internal Leakage (after reman) | ≤ 7 cc/min at idle |
| Connector | 2‑pin Deutsch, gold‑plated terminals |
♻️ The Remanufacturing Process – Where Precision Is Restored, Not Compromised
Unlike rebuilt injectors that simply replace seals and polish nozzles, the 20R‑4179 undergoes a rigorous 10‑stage remanufacturing workflow:
Core disassembly & cleaning – Ultrasonic cleaning with thermal cycling removes all carbon and varnish.
Crack detection – Magnetic particle inspection validates housing integrity.
Bore resizing – The plunger barrel is honed to exact tolerances, then matched with a new plunger (selective fit).
New solenoid assembly – The coil and armature are replaced with updated insulation materials.
Nozzle replacement – A brand‑new VCO nozzle is fitted, with orifices laser‑drilled to the latest emission‑compliant geometry.
Control valve remachining – The seat is reground to restore sealing surface flatness within 0.5 μm.
Dynamic calibration – Each injector is flow‑tested across 12 pressure points and programmed with a new IQA (Injector Quantity Adjustment) code derived from its actual performance.
Leakage validation – Internal and external leak tests ensure zero cross‑contamination between fuel and oil circuits.
Thermal cycling – Subjected to 100 temperature shocks from -30°C to +140°C.
Final spray analysis – High‑speed imaging confirms cone angle and droplet size distribution.
This process not only restores the injector to original equipment standards but often improves its sealing performance due to the use of modern fluorocarbon O‑rings and updated solenoid drivers.