This is the Bosch 0432191632, a new mechanical fuel injector supplied as a complete nozzle and holder assembly for the Cummins 6CT 8.3L, the C Series six that Case calls the 6T-830 or 6TA-830. It is the Bosch-made injector behind Cummins 3926787 and Cummins service number 3802648, and CNH sells it as J926787. Catalogs list it for the Case IH Magnum 7250 (from PIN JJA0064978), 8950, MX200 and MX220 tractors with the emissions certified engine, and for Case IH 2188 Axial-Flow combines, 2155 cotton pickers and the SPX4260 sprayer where the parts book shows J926787. It is a mechanical injector for the pump, line and nozzle engine, not for the later common-rail ISC or QSC.

Worn mechanical injectors on the 8.3L show up as hard starting, a rough idle, black smoke under load, fuel knock or fuel in the oil, and a pop test shows a low opening pressure or a poor spray pattern. Check the lift pump, filters and pump timing first. Replace all six together so the cylinders stay even, and never mix opening pressures in one engine. This is the high-pressure injector of the family: it opens at 300 to 314 bar, about 4,500 psi.

Specifications

Fits / Applications

• Cummins 6CT 8.3L (C Series) with mechanical injection, emissions certified engines that list injector 3926787
• Case IH Magnum 7250 tractor from PIN JJA0064978 (earlier 7250 tractors take Cummins 3919602, Bosch 0432191738)
• Case IH Magnum 8950 tractor
• Case IH Magnum MX200 and MX220 tractors
• Case IH 2188 Axial-Flow combine and 2155 cotton picker, on machines that list J926787 (they used both this injector and the 0432191794, depending on serial number)
• Case IH SPX4260 Patriot sprayer
• Engines that call for Cummins 3926787 or 3802648 or CNH J926787
• Not for common-rail ISC or QSC 8.3L engines
• Six injectors per engine

Fit a new sealing washer under each nozzle, clean the injector bore and seat, and cap the lines until they go on. Torque the hold-down to the engine maker’s figure, bleed the high-pressure lines, then check for leaks and an even idle.

Part Numbers & Cross Reference

Bosch 0432191632  ·  Cummins 3926787  ·  Cummins 3802648  ·  Case IH (CNH) J926787

Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.

Frequently Asked Questions

Will the Bosch 0432191632 fit my Case IH Magnum?

Catalogs list it for the Magnum 7250 (from PIN JJA0064978), 8950, MX200 and MX220 with the emissions certified engine. Earlier 7250 tractors take Cummins 3919602 (Bosch 0432191738), and the 7220, 7230, 7240, 8910, 8920, 8930, 8940 and MX180 are listed with the 0432191595. Check the number on your old injector or call 530-668-0818 with the tractor model and PIN.

What numbers does the 0432191632 replace?

Cummins 3926787 and 3802648, and CNH J926787. It is the same Bosch-made injector those numbers are sold under.

How is it different from the 0432191595 and 0432191794?

Opening pressure. The 0432191632 opens at 300 to 314 bar, the 0432191595 at 260 to 274 bar and the 0432191794 at 205 to 219 bar, so fit only the one your engine lists even though they look the same.

Is it new, and is there a core?

It is a new Bosch injector, not a rebuild, and it is sold outright with no core to return.

Related Parts

• Case IH Magnum 7150, Early 7250 & Cummins 8.3L Mechanical Fuel Injector (3919602) | Bosch 0432191738 New
• Case IH 1688, 2188 Combine & Cummins 6CT 8.3L Mechanical Fuel Injector | Bosch 0432191794 New (3908513)
• Cummins 6CTA 8.3L C Series Mechanical Fuel Injector | Bosch 0432191740 New (Cummins 3919058, 3802288)
• Cummins ISC & ISL 8.9L HE300VG Turbo Actuator Kit | Holset 6382091HX Remanufactured
• Mechanical Diesel Injector Testing & Rebuild Service

Why Buy From Valley Fuel Injection

We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. When you call, you talk to the people who test these units. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.