HX30W Turbocharger 3592016 – Verified Fitment for Cummins 4BT 6B5.9

Verified Variant Match — oil port orientation and flange bolt pattern confirmed against each Cummins 4BT / 6B5.9 engine build before dispatch.

Technical Specifications

Application Suitability

Why the Same HX30W Turbocharger Part Number Ships in Multiple Variants

Cross-reference tables copied between sellers carry forward errors that only surface when the unit arrives on the workshop bench.

On construction sites across Shandong, I have watched mechanics unbox a turbocharger that matched the part number on the order sheet yet would not bolt to the engine block. The HX30W turbocharger for Cummins 4BT 6B5.9 carries dozens of superseded and alternate numbers, but beneath the same outer shell the oil inlet port angle, compressor housing clocking, and turbine housing A/R ratio differ across engine generations. A Dodge Ram application and a CASE 580SL loader may share the same base identifier yet require incompatible flange orientations [NEED_CITE: Cummins 4BT turbocharger variant identification across industrial and automotive applications]. When the nameplate is rusted through or painted over, relying on a single cross-reference number becomes a gamble with machine uptime.

Mapping the Cross-Reference Maze for Cummins 4BT and 6B5.9 Engines

Nineteen reference numbers converge on this HX30W turbocharger family, from 3592016 through JR802741, each originally tied to a specific engine build or equipment manufacturer. Some numbers have been superseded across Cummins production runs, while others reflect dealer-level repackaging of the same core unit with a different gasket set. Our verification process traces each number back to the engine serial range and equipment model, filtering out copied entries that never matched the physical interface.

Interface Points That Decide Fitment on the Bench

The turbine housing inlet flange must align with the exhaust manifold stud pattern on the specific 4BT or 6B5.9 block variant. The oil inlet fitting orientation — whether the port faces the compressor side or the turbine side — changes between early 4B3.9 builds and later 4BT 110HP configurations. Compressor outlet diameter and the V-band or bolted clamp type determine whether the existing charge air pipe connects without an adapter. Oil drain flange bolt spacing must match the return boss on the engine block; a mismatch here causes oil pooling and bearing failure within the first operating shift [NEED_CITE: turbocharger oil drain restriction causes and bearing failure modes]. We verify each of these dimensional checkpoints against the removed unit or engine build record before the replacement ships.

What the Specs Mean in Real Operating Conditions

The HX30W turbo model was designed for the mid-range airflow and pressure ratio demands of the Cummins 4-cylinder and 6-cylinder B-series engines. The compressor wheel trim and turbine housing A/R ratio together define the boost curve — too aggressive a trim on a low-speed industrial engine causes surge at part throttle, while too conservative a trim on a high-output 4BT 110HP leaves power on the table. Wastegate actuator calibration must match the engine's fuel map; a mismatched spring pressure results in either chronic over-boost or flat torque below rated RPM. The journal bearing system in this turbo relies on clean oil supply at adequate volume, which means the oil feed line and in-line filter must be inspected every time the unit is replaced [NEED_CITE: turbocharger journal bearing lubrication requirements for diesel engines].

The Hidden Cost of a Variant Mismatch

A turbocharger that physically bolts on but carries the wrong internal trim does not fail dramatically — it under-performs quietly. Fuel consumption climbs, exhaust gas temperatures drift higher, and the engine never reaches rated power under load. Mechanics chase the symptom through injectors, fuel filters, and timing adjustments while the root cause sits on the intake manifold. In the worst case, a slightly misaligned oil drain port causes restricted return flow, and the turbo bearings fail within a few hundred hours, sending metal fragments into the oil gallery. The cost is no longer just the replacement unit; it is the second teardown and the engine damage that follows.

Why Buyers Source This Turbocharger Through Our Counter

We produce selected turbocharger lines in our own facility and source the remainder from ISO-certified manufacturing partners, so both paths carry identical warranty terms. Eight product categories sit under one account, meaning gaskets, oil feed lines, and air filters for the same repair ship as one consignment. Orders start from a single unit — no minimum quantity blocking an emergency replacement. Our Guangzhou warehouse stocks common variants for fast dispatch, and our technical team identifies the correct unit from a part number, a machine model, or a photograph of a worn nameplate. Cross-reference verification covers superseded and alternate numbers across the full Cummins B-series range. Sample units are available for fitment confirmation before any bulk commitment.

Documentation & Verification

• Commercial invoice and packing list itemizing each turbocharger variant and quantity
• Part compatibility and cross-reference sheet listing verified number mappings (reference only)
• Quality inspection record covering dimensional checks on flange pattern and port orientation
• Warranty terms covering manufacturing defects for 3 to 12 months
• Packing photographs showing unit protection and crate configuration before dispatch
• HS code and customs documentation support for international turbocharger shipments

Fitment Check Before Installation

• Compare oil inlet fitting angle on the new HX30W against the removed unit before removing protective caps
• Verify turbine inlet flange stud spacing against the exhaust manifold with a straight edge
• Confirm compressor outlet clamp type matches the existing charge air pipe connection
• Check oil drain flange bolt pattern against the engine block return boss using the supplied gasket
• Rotate the compressor wheel by hand to confirm free movement and absence of shaft rub
• If any interface does not align, halt installation and contact the supplier with photographs for variant exchange

Request a Fitment Verification Before You Commit

Send us the machine model, engine serial number, or a clear photograph of the existing turbocharger nameplate and oil port layout. We will return a confirmed cross-reference match and dimensional comparison so you know the unit will fit before it ships. For fleet operators standardizing turbo supply across mixed-brand equipment, we arrange sample dispatch for bench trial before bulk quantities are released.

Frequently Asked Questions

Q: How do I confirm this HX30W turbocharger fits my specific machine model and engine serial? A: Provide the machine model and engine serial number, or a photograph of the existing nameplate. We cross-reference against our verified mapping of Cummins 4BT, 4B3.9, and 6B5.9 variants, checking oil port orientation, flange pattern, and compressor housing configuration before confirming the match.

Q: My old turbo has a different part number — is it still compatible with this replacement? A: Many HX30W numbers have been superseded across Cummins production runs. We trace alternate numbers through our cross-reference database to confirm whether the physical interfaces — turbine flange, oil ports, compressor outlet — align with your engine build, regardless of the number printed on the old unit.

Q: Why are there multiple part numbers like 3592016, 3800709, and 3593089 for what looks like the same turbo? A: These numbers reflect different equipment manufacturer assignments, gasket set variations, or superseded production runs. The physical turbocharger may share the same HX30W core but differ in oil fitting angle or mounting bracket orientation. We verify which variant your engine requires before confirming supply.

Q: I only have my machine model, not the part number — can you still identify the correct unit? A: Yes. Machine model and engine serial range are often sufficient to determine the correct HX30W variant. If the engine has been swapped or rebuilt, a photograph of the existing turbocharger oil port layout and flange pattern provides the additional detail needed for accurate identification.

Q: Can I order a sample to verify fitment before placing a larger order? A: Sample units are available for bench fitment trials. This allows your workshop to confirm flange alignment, oil port routing, and hose connections on the actual machine before committing to a fleet-quantity order.