This is the Bosch 0432191628, a new nozzle and holder assembly for the Cummins 6CT 8.3L C series. Catalogs file it under the 6CT, 6CTA and 6CTAA names and list it for the 210 hp (155 kW) rating, so order it by number. It replaces Cummins 3802486, 3928387 and 3922907. It is built on the Bosch KBAL105P29 holder and opens at 300 to 314 bar. It is the complete injector, set and ready to fit.

Mechanical injectors wear at the nozzle. A dribbling or stuck nozzle shows up as a miss, black or white smoke, fuel knock, hard starting or fuel in the oil. Pop test the old set before you condemn the pump. Replace them as a full set, one per cylinder, so every cylinder opens at the same pressure. Its close sibling, Bosch 0432191642, opens at the same pressure but is listed for the 250 hp (184 kW) rating and replaces Cummins 3926120, 3802485 and 3922913. The two carry different Cummins numbers, so order by the number on your old injector.

Specifications

Fits / Applications

• Cummins 6CT 8.3L C series, engines that list injector 3802486, 3928387 or 3922907
• Filed by catalogs under the 6CT, 6CTA and 6CTAA engine names
• Six per engine

Fit a new sealing washer under each injector and clean the bore first. Tighten the hold-down and the line nuts to the engine maker’s figures, bleed the lines, and check for leaks at the return connections. Change the fuel filters at the same time.

Part Numbers & Cross Reference

Bosch 0432191628  ·  Cummins 3802486  ·  Cummins 3928387  ·  Cummins 3922907  ·  Cummins (Bosch catalog) 3898387  ·  Bosch holder KBAL105P29

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

What Cummins numbers does the Bosch 0432191628 replace?

Cummins 3802486, 3928387 and 3922907. Bosch also lists Cummins 3898387 for it.

Is it the same as Bosch 0432191642?

No. Both are mechanical 8.3L C series injectors that open at 300 to 314 bar. Catalogs list this one for the 210 hp (155 kW) rating and the 0432191642, which replaces Cummins 3926120, 3802485 and 3922913, for the 250 hp (184 kW) rating. Use the one that matches the Cummins number for your engine and do not mix them.

Is the Bosch 0432191628 new or rebuilt, and is there a core?

It is a new Bosch nozzle and holder assembly, not a rebuild. It is sold outright, so there is no core to send back.

How do I confirm it is right for my 8.3L?

Read the Cummins number on the old injector, or call 530-668-0818 with your engine serial number and CPL and we will look it up. Catalogs file this injector under 6CT, 6CTA and 6CTAA, so the engine name alone is not enough.

Related Parts

• Cummins 6CT 8.3L C Series Mechanical Fuel Injector (3926120, 3802485) | Bosch 0432191642 New
• Cummins 6CTA 8.3L C Series Mechanical Fuel Injector | Bosch 0432191740 New (Cummins 3919058, 3802288)
• Cummins 6CTA 8.3L & Case IH Mechanical Fuel Injector (3802753, 3928228) | Bosch 0432191601 New
• 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.