This is the Bosch 0432191426, a new mechanical fuel injector (nozzle and holder assembly) made by Bosch, not a rebuild. It fits the Cummins ISC 8.3L engines that use a mechanical injector. Case IH and New Holland list it as J948529 for the Magnum MX240, MX255, MX270 and MX285, the Steiger STX275 and the New Holland TG255, TG285 and TJ275. It replaces Cummins 3948529 and 3943731, and catalogs also list it under Bosch 0432191512.

Do not confuse it with the later common-rail ISC injector, which is an electronic part with a different shape, or with Bosch 0432191740, which carries Cummins 3919058 and 3802288 and is listed for the older mechanical 6CTA 8.3L. A miss, white or gray smoke, a fuel knock or hard starting point at worn nozzles. Check fuel supply and the pump before you replace a set. The engine takes six injectors.

Specifications

Fits / Applications

• Cummins ISC 8.3L with mechanical injectors
• Case IH Magnum MX240, MX255, MX270 and MX285 tractors
• Case IH Steiger STX275 tractor
• New Holland TG255, TG285 and TJ275 tractors
• Case IH FLX3010 and FLX4010 floaters and SPX4410 sprayer
• Case CX330 crawler excavator, on builds that list injector J948529
• Not for common-rail ISC or QSC engines
• Six injectors per engine

Fit new seals, keep the bore clean and torque the hold-down to the engine maker’s figure. Fuel reaches this injector through a connector tube in the head. The tube is a separate part, Bosch F00ZR20002, one per cylinder: check each tube tip and replace any that are marked or leaking. Change the fuel filter at the same time.

Part Numbers & Cross Reference

Bosch 0432191426  ·  Bosch 0432191512  ·  Cummins 3948529  ·  Cummins 3948530  ·  Cummins 3943731  ·  Cummins 3943730  ·  Cummins 3948131  ·  Cummins 3942726  ·  Case IH / New Holland (CNH) J948529  ·  Case IH / New Holland (CNH) J943731  ·  Case IH / New Holland (CNH) 87775220  ·  CNH remanufactured JR948529  ·  CNH remanufactured JR943731

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

Which engines and machines does the Bosch 0432191426 fit?

The Cummins ISC 8.3L that uses mechanical injectors. Catalogs list it for the Case IH Magnum MX240, MX255, MX270 and MX285, the Steiger STX275 and the New Holland TG255, TG285 and TJ275. Call 530-668-0818 with your engine serial number and we will confirm it.

What numbers does it replace?

Cummins 3948529, 3948530, 3943731, 3943730, 3948131 and 3942726, and Case IH and New Holland J948529, J943731 and 87775220. Catalogs also list the same injector under Bosch 0432191512.

Is this the same as the Bosch 0432191740?

No. The 0432191740 crosses to Cummins 3919058 and 3802288 and is listed for the older mechanical 6CTA 8.3L. Match the Cummins number on your old injector.

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

It is a new injector made by Bosch. We sell it outright, so there is no core to return to us.

Related Parts

• Cummins ISC 8.3L, Case IH & New Holland Common-Rail Fuel Injector | Bosch 0445120272 New
• Cummins ISC 8.3L, Case IH & New Holland Common-Rail Fuel Injector | Alliant Power AP55532 Remanufactured
• Cummins 6CT 8.3L & Case / Case IH Mechanical Fuel Injector | Bosch 0432191595 New (Cummins 3930525)
• 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.