This is the IHI F54VAD-S0049B, a new RHF5V turbocharger, not a rebuild, for the Isuzu 4JJ1 3.0L four-cylinder diesel (engine code 4JJ1-TC) in the Isuzu NPR. Every catalog we checked starts it at 2011, and two carry it through 2016 or later. IHI is the original maker of this turbo. It is a variable geometry (VNT) unit and comes with its vacuum actuator. It replaces Isuzu 8981654480, 8981654481, 8981654482 and 8981654483 and IHI spec numbers VAA30049, VBA30049, VCA30049 and VDA30049. The IHI code is VIHJ.

Low boost, slow spool, oil in the charge pipes, shaft play you can feel at the compressor wheel or a sticking vane mechanism are the usual reasons this turbo gets replaced. Find the cause before you fit the new one: a restricted oil feed line, a plugged crankcase breather, a boost leak or a loaded exhaust aftertreatment system will take out the replacement too.

Specifications

Fits / Applications

• Isuzu NPR with the 4JJ1 3.0L diesel, 2011 to 2016
• 2017 and newer NPR 3.0L: not confirmed by two catalogs. Send us the tag numbers or the VIN and we will check.
• 3.0L 4JJ1 only. Not for the 5.2L 4HK1 in the NPR-HD, NQR and NRR.
• 4JJ1X engines with Tier 4 emissions equipment are listed under a different turbo, IHI code CIKQ (Isuzu 8983686610 or 8983686611). Go by the tag on your old turbo.
• Match the numbers on your old turbo: IHI code VIHJ, IHI VAA30049, VBA30049, VCA30049 or VDA30049, or Isuzu 8981654480 to 8981654483

Change the engine oil and filter, check the oil feed and drain lines for restriction and replace them if there is any doubt, and prime the turbo with clean oil before the first start. Check the air intake, charge pipes and intercooler for oil and debris left by the old turbo.

Part Numbers & Cross Reference

IHI F54VAD-S0049B  ·  Isuzu 8981654480  ·  Isuzu 8981654481  ·  Isuzu 8981654482  ·  Isuzu 8981654483  ·  IHI spec VAA30049  ·  IHI spec VBA30049  ·  IHI spec VCA30049  ·  IHI spec VDA30049  ·  IHI code VIHJ  ·  Other 4632901  ·  IHI, G suffix version F54VAD-S0049G

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 F54VAD-S0049B fit an Isuzu NPR-HD, NQR or NRR with the 5.2L?

No. This turbo is for the 3.0L 4JJ1. The 5.2L 4HK1 uses a larger RHF55V turbo with different numbers, such as the IHI F58VED-S0018B we list for 2007 to 2010 trucks.

What numbers does the F54VAD-S0049B replace?

Isuzu 8981654480, 8981654481, 8981654482 and 8981654483, and IHI spec numbers VAA30049, VBA30049, VCA30049 and VDA30049. The IHI code is VIHJ. Catalogs also list the G suffix number F54VAD-S0049G for the same turbo.

Is this a new turbo, and does it come with the actuator?

Yes to both. It is a new IHI turbocharger, made by the original maker, and it is supplied as a complete assembly with the vacuum actuator.

What years of NPR does it fit, and how do I make sure?

Every catalog we checked starts it at the 2011 NPR with the 3.0L 4JJ1, and two carry it through 2016 or later. To be sure, read the numbers off the IHI tag on your old turbo and match them to VIHJ or VAA30049 to VDA30049, or call 530-668-0818 with your VIN.

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.