HT60 Turbocharger 3804566 for Cummins N14 – Verified Fitment

Verified Cross-Reference Fitment — Every HT60 turbocharger 3804566 unit is matched against machine serial ranges and port orientation records before dispatch, so the flange and oil feed lines align on arrival.

Technical Specifications

Application Suitability

Why the Same Turbo Number Ships in Several Variants

A single base designation can map to multiple physical configurations across model generations, and copied cross-reference tables frequently propagate errors that only surface when the unit arrives on site.

When a workshop orders a replacement turbocharger by number alone, the assumption is that the listing resolves to one exact part. In practice, the HT60 family covers several port orientations and flange patterns depending on which Cummins N14 build sits in the engine bay. I have seen a unit arrive with the oil feed port rotated 90 degrees from where the supply line needed to connect — the part number was technically correct, but the variant was wrong for that specific machine serial. That excavator sat idle for days while the right configuration was sourced. [NEED_CITE: turbocharger variant identification practices in heavy equipment aftermarket]

Machine Serial Ranges and Variant Mapping

The Turbocharger HT60 3804566 for Komatsu PC600-6 PC650-6 covers machines fitted with the Cummins N14 engine, but within that range the turbo model designation splits between HT60 and HT60-N0881A/H32K1. Which one your machine requires depends on the engine serial and the production batch of the excavator. Providing the machine serial number allows our technical team to pull the correct variant from the cross-reference record, rather than relying on a copied table that may not account for mid-production changes.

Port Position and Flange Interface Verification

Before any turbocharger leaves the warehouse, the port clocking, flange stud pattern, and oil drain orientation must match what is already bolted to the engine. On the PC600-6 and PC650-6 platforms, the oil supply line and drain pipe are fixed in position — a turbo with ports rotated even slightly will not connect without modifying plumbing, which introduces leak risk under boost pressure. We check the existing unit against photographs or the machine serial to confirm the HT60 variant ships with the correct interface geometry. [NEED_CITE: turbocharger oil port alignment standards for diesel engines]

Reading the Spec Sheet for Real-World Fitment

The turbo model designation HT60-N0881A/H32K1 encodes the compressor housing profile and turbine wheel geometry matched to the Cummins N14 airflow requirements. Selecting the wrong variant means the boost curve will not match the fuel map, leading to either sluggish response or excessive exhaust gas temperature under load. The ISO-certified production process holds dimensional tolerances on the bearing housing and shaft assembly so the replacement unit seats into the existing pedestal without shim adjustment. New aftermarket condition means no prior thermal cycling on the turbine housing, which matters because repeated heat stress can warp the flange face over a unit's previous service life.

The Hidden Cost of a Variant Mismatch

A turbocharger that physically bolts on but has the wrong port orientation forces the technician to reroute oil lines, which can restrict flow and cause bearing starvation at high RPM. A unit with the wrong compressor map creates chronic over-temperature conditions that degrade the turbine wheel and eventually crack the housing. Both scenarios mean the machine returns to the shop within weeks, and the original failure diagnosis gets blamed on part quality rather than variant selection. [NEED_CITE: turbocharger failure root cause analysis in construction equipment]

Why Source This Turbocharger Here

Selected turbocharger lines are produced in our own facility, with the remainder sourced from qualified ISO-certified manufacturing partners — both carry the same QC checks and warranty terms. A single account covers all eight component categories, so if the turbo job also requires exhaust gaskets, oil feed lines, or air filters, everything ships under one reference. Minimum order is one piece, which matters when a single machine is down. Identification works from the part number, machine model, or a photograph of the existing nameplate. Cross-reference verification covers superseded numbers like 3536804 and 4033556H to confirm they resolve to the same physical unit. A sample unit can be dispatched for fitment confirmation before a fleet-scale commitment is made.

Documentation & Verification

• Commercial invoice and packing list referencing machine model and turbo variant
• Part compatibility and cross-reference sheet marking all OEM numbers as reference only
• Dimensional check record covering port spacing and flange pattern before dispatch
• Warranty terms document specifying coverage period and defect conditions
• Packing photographs showing protective crating and port covers in place
• HS code and customs documentation support for international shipment

Fitment Check Before Installation

• Compare oil port clocking on the new HT60 against the removed unit before mounting
• Verify flange stud spacing matches the exhaust manifold face on the Cummins N14
• Check compressor inlet diameter against the existing charge air pipe connection
• Confirm oil drain port orientation aligns with the return line routing on the block
• Inspect shaft end-play and compressor wheel clearance per service manual specification
• Torque mounting hardware in the sequence specified for the HT60 flange pattern

Requesting a Fitment-Verified Quote

Send the machine model, serial number, and a photograph of the existing turbocharger nameplate or the engine data plate. If the nameplate is worn or painted over, a clear shot of the oil port positions and flange face lets the technical team confirm which HT60 variant your machine requires and verify the cross-reference before the order is placed.

Frequently Asked Questions

Q: How do I confirm this turbocharger fits my specific PC600-6 or PC650-6 machine? A: Provide the machine serial number and, if available, the engine serial from the Cummins N14 data plate. Our technical team cross-references these against the production records to confirm whether your machine requires the HT60 or HT60-N0881A/H32K1 variant, and verifies port orientation matches your existing installation before the unit ships.

Q: My old turbo has a different number — is it still the same part? A: Numbers like 3536804, 4033556, 4033556H, and 3804566NX are listed as cross-reference only and may all resolve to the same physical turbocharger. Send a photograph of the existing nameplate along with the machine model, and we will confirm whether your number is a superseded or alternate reference for the HT60 unit compatible with your excavator.

Q: Why are there so many cross-reference numbers listed for one turbo? A: Over the production life of the PC600-6 and PC650-6 series, the turbocharger part number was updated several times as the Cummins N14 engine configuration evolved. Each cross-reference number represents a previous or alternate designation that maps to the same fitment, but verifying the correct variant still requires matching against your specific machine serial.

Q: I only have the machine model, no readable part number — can you identify the right turbo? A: Yes. Send the machine model and serial number, along with a photograph of the turbocharger mounting area showing the oil port positions and flange face. We use these details to identify the correct HT60 variant from our fitment records, even when the original nameplate is completely unreadable.

Q: Can I get a sample to test fitment before ordering in quantity? A: A single sample unit can be dispatched for fitment verification on one machine before you commit to a fleet-scale order. This allows your workshop to confirm bolt pattern, port alignment, and charge air pipe connection on the actual equipment, reducing the risk of a variant mismatch across multiple units.