This is the Bosch 0445120302, a new genuine Bosch CRIN 4.2 common-rail injector, not a rebuild, for the Detroit Diesel DD15 14.8L and DD16 15.6L. It replaces Detroit injectors A4720701187, A4720701287 and A4720701387 and matches Detroit kit EA4600701387 (remanufactured RA4600701387), which catalogs list for EPA10, GHG14 and GHG17 engines. These engines power the Freightliner Cascadia, Coronado and Columbia and the Western Star 4900 and 5700XE. Bosch also offers the same injector remanufactured as 0986435740.

A rough idle, a miss under load, hard starting, fuel in the oil, white or black smoke and cylinder balance faults are the usual reasons these injectors come out. Check fuel supply, filters and rail pressure first, because a weak supply side gives the same complaints. The engine takes six injectors, and worn sets are normally changed together. Each injector carries its own calibration code, which has to be programmed into the engine controller after fitting.

Specifications

Fits / Applications

• Detroit Diesel DD15 14.8L and DD16 15.6L built with injector A4720701187, A4720701287 or A4720701387
• Matches Detroit kit EA4600701387 (new) and RA4600701387 (remanufactured), which catalogs list for EPA10, GHG14 and GHG17 engines
• Trucks: Freightliner Cascadia, Coronado, Columbia and 122SD, Western Star 4900, 5700XE and 6900XD, and Sterling trucks built with the DD15. Match by engine build, not by truck.
• An earlier DD15 / DD16 injector, A4720700887 (Detroit kit RA4600701087, Bosch 0445120207 new or 0986435737 remanufactured), is catalogued for 2008 to 2014 engines. Check the number on your old injector.
• The DD13 12.8L has its own injectors
• Six injectors per engine, sold each

Match the Detroit or Bosch number on the old injector before fitting. Each injector carries its own calibration code, which has to be programmed into the engine controller after fitting. The box holds the injector with two body O-rings and one nozzle sealing washer. The hold-down bolt and injector tube gasket that Detroit packs in its own kit are not in the Bosch box: catalogs sell them as an add-on kit (Alliant Power AP0145), one per injector, so ask about it when you order. Keep everything clean, fit new fuel filters, and cap open lines and ports while the injectors are out, because common-rail injectors do not tolerate dirt.

Part Numbers & Cross Reference

Bosch new 0445120302  ·  Bosch new, twin number 0445120303  ·  Bosch remanufactured 0986435740  ·  Bosch remanufactured, also listed as 0986435646, 0986435649  ·  Detroit Diesel injector A4720701187  ·  Detroit Diesel injector A4720701287  ·  Detroit Diesel injector A4720701387  ·  Detroit Diesel injector A4720701087  ·  Detroit Diesel A4600701387  ·  Detroit Diesel kit, new EA4600701387  ·  Detroit Diesel kit, remanufactured RA4600701387  ·  Detroit Diesel other kit numbers EA4720701387, RA4720701187

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

Does the 0445120302 fit both the DD15 and the DD16?

Yes. It fits the DD15 14.8L and the DD16 15.6L where the engine was built with injector A4720701187, A4720701287 or A4720701387. Catalogs list the matching Detroit kit, EA4600701387, for EPA10, GHG14 and GHG17 engines.

What numbers does the 0445120302 replace?

Detroit injectors A4720701187, A4720701287, A4720701387 and A4720701087 and Detroit kits EA4600701387 and RA4600701387. It is a new genuine Bosch injector with the twin number 0445120303, and the Bosch remanufactured numbers are 0986435740, 0986435646 and 0986435649.

My old injector says A4720700887. Is this the one?

Bosch and Detroit list that injector under other numbers: Bosch 0445120207 new or 0986435737 remanufactured, Detroit kit RA4600701087. Call 530-668-0818 with your engine serial number and we will confirm which one your engine takes before you order.

Does the 0445120302 need coding, and what else do I need to fit it?

Yes. Each injector has a calibration code that is programmed into the engine controller after fitting. It comes with two body O-rings and a nozzle sealing washer, but not the hold-down bolt and injector tube gasket, so plan on one add-on kit (Alliant Power AP0145) per injector.

Related Parts

• Detroit Diesel DD15 & DD16 Common-Rail Fuel Injector (A4720701187) | Bosch 0986435740 Remanufactured
• Detroit Diesel DD13 EPA07 / EPA10 Common-Rail Fuel Injector (A4710700387) | Bosch 0986435738 Remanufactured
• Detroit Diesel DD13 EPA07 / EPA10 Common-Rail Fuel Injector (A4710700387) | Bosch 0445120194 New
• Detroit Diesel DD13, DD15 & DD16 CPN5 High-Pressure Fuel Pump | Bosch 0986437507 Remanufactured (A4700902150)
• Common Rail 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.

Not sure the injectors are the problem? We test and diagnose in-house before you buy. See our common rail injector testing and rebuild service.