This is the Bosch 0432131698, a new nozzle and holder assembly for the Cummins 4B 3.9L four-cylinder, the engine Case calls the 4-390. Catalogs list it for the Case 580L Series 2 and 580M loader backhoes, the 570LXT Series 2 loader landscaper, the 1840, 1845C, 60XT, 70XT, 75XT and 85XT skid steers, the 550G and 550H crawlers, the 584E, 585E, 586E, 585G, 586G and 588G forklifts and the 660 trencher. It replaces Cummins 3930573 and 3806248 and Case J930573. The holder is a Bosch KDAL59P16, the body ID is 0573 and it opens at 240 to 254 bar. It is a Bosch-made part, sold each, and the engine takes four.

Hard starting, white or black smoke, a rough idle, fuel knock and fuel in the oil are the usual signs of worn nozzles on these engines. Mechanical injectors wear as a set, so most shops test or replace all of them at once. A weak lift pump, air in the supply line or a worn injection pump cause the same complaints, so rule those out first. Case built many of these machines with more than one engine or pump, and its parts store lists a second injector, J929490 (Bosch 0432131749), for several of the same models. Catalogs describe this one as the injector for the 4B, the naturally aspirated 3.9L. Both use the KDAL59P16 holder, so go by the stamp on the old injector: 0573 for this one.

Specifications

Fits / Applications

• Case 580L Series 2 and 580M loader backhoes
• Case 570LXT Series 2 loader landscaper
• Case 1840 and 1845C skid steers
• Case 60XT, 70XT, 75XT and 85XT skid steers
• Case 550G and 550H crawlers
• Case 584E, 585E, 586E, 585G, 586G and 588G forklifts
• Case 660 trencher
• Only the builds of these machines that call for Case J930573 (stamp 0573). Several were also built with other injectors
• Cummins 4B 3.9L (Case 4-390) engines that call for injector 3930573 or 3806248
• Four injectors per engine

Fit a new sealing washer under each injector and make sure the old one is out of the bore. Flush the lines before you connect them, change the fuel filter and bleed the system. Torque the hold-down to the engine manual, not by feel.

Part Numbers & Cross Reference

Bosch 0432131698  ·  Cummins 3930573  ·  Cummins 3806248  ·  Case J930573  ·  Case remanufactured exchange JR930573  ·  Bosch nozzle holder KDAL59P16

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 0432131698 fit my Case 580L or 580M?

Catalogs list it for the 580L Series 2 and the 580M, on the Cummins 4B 3.9L engine that calls for Case J930573. Case also built these backhoes with injector J929490, so check the stamp on your old injector (0573 for this one). For an earlier 580L, call 530-668-0818 with the machine and engine serial numbers.

What numbers does it replace?

Cummins 3930573 and 3806248, and Case J930573. Case’s remanufactured exchange number for the same injector is JR930573. The body ID stamped on the injector is 0573.

Which other Case machines is it listed for?

The 570LXT Series 2, the 1840, 1845C, 60XT, 70XT, 75XT and 85XT skid steers, the 550G and 550H crawlers, the 584E, 585E, 586E, 585G, 586G and 588G forklifts and the 660 trencher, on the builds that call for J930573.

Is it new, and do I send my old injector back?

It is a new Bosch injector, not a rebuild. It is sold outright, so there is no core to return.

Related Parts

• Cummins 4BT 3.9L, Case, Kobelco VE4 Injection Pump 0460424081 | Bosch Authorized Remanufactured by VFI
• Case / New Holland 445T/M3, F4GE & F4CE 4.5L Mechanical Fuel Injector | Bosch 0432133761 New
• 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.