4.8L EcoMAX CR · Remanufactured
Remanufactured Delphi 28580673 common-rail diesel injector for the JCB 448 (4.8-litre EcoMAX) engine — direct replacement for JCB OE 320/A6648 (also listed as 320A6648 / 320-A6648) and cross-reference 1684BS15F81. Fits JCB 3CX and 4CX backhoe loaders, Loadall telehandlers and JS-series excavators powered by the JCB 448 EcoMAX unit. OEM-tested and calibrated with full flow and leak-back verification on CR318 PRO test bench. Includes 12-month unlimited-mileage warranty. Supplied as an exchange unit — return your old injector within 21 days.
JCB448
Hard starting or extended cranking; rough or uneven idle; loss of power under load; excess smoke from the exhaust; cylinder misfire or contribution fault codes. When two or more appear together, suspect the injector before peripherals — a comparative leak-off test isolates the failed unit without tear-down.
Injector back-leak beyond specification; nozzle wear degrading the spray pattern; combustion gas leaks past the injector seat washer. Internal wear cannot be repaired in situ — once delivery drifts outside calibration, remanufacture or replacement is the reliable fix.
Run a comparative leak-off (back-leak) test across all injectors before condemning a single unit. Compare requested vs actual rail pressure in live data at idle and under load. Inspect injector connectors and wiring before replacing hardware. Never condemn a common-rail injector on a fault code alone.
Each remanufactured 28580673 is fully stripped, ultrasonically cleaned and inspected; worn components are replaced with OE-grade parts. The rebuilt unit is calibrated on a common-rail test bench against the manufacturer's specification — delivery, back-leak and response verified — and despatched with a 12-month parts warranty and its calibration data on file.
The 28580673 trusted family covers 3 verified vehicle fitments across 1 makes: JCB. Every fitment listed is registry-verified.
28580673 cross-references 4 further OE numbers, including 320/A6648, 320A6648, 320-A6648 and 1684BS15F81. Always match the reference etched on your failed unit's body.
UK diesel injector specialists supplying OEM tested and calibrated remanufactured injectors. Trusted by garages and mechanics nationwide with 12-month warranty on every part.