GT1241Z Turbocharger 7030304 – Verified Fitment for Doosan D24

Cross-Reference Verified — Every superseded number mapped to the current GT1241Z variant for Doosan D24 applications.

Technical Specifications

Application Suitability

Why the Same Turbocharger 7030304 Ships Under Nine Different Numbers

The Doosan D24 engine has been revised across multiple production generations, and each revision carries a different turbocharger reference number for what is fundamentally the same GT1241Z platform.

A workshop in Shandong once pulled a turbo with a worn nameplate showing only a partial 150105-00044 suffix. The buyer assumed any variant would fit, ordered the base number, and watched the machine sit idle while the return shipment crossed two provinces. The D24 block has seen enough casting revisions that oil drain geometry and compressor trim differ between suffix variants — close enough to look identical on a catalog page, wrong enough to prevent the hoses from reaching [NEED_CITE: Doosan D24 engine serial number identification for turbocharger variant selection]. This Turbocharger 7030304 for Bobcat E50 E55 / Doosan D24 cross reference fitment list exists precisely because ordering on a single number without verifying the variant is a coin flip.

Mapping the Doosan D24 Serial Range to the Correct Variant

The 150105-00044 base number carries A, C, D, and H suffixes, each mapping to a specific engine build window. Bobcat E-series compact excavators from E42 through E85 all share the D24 block, but early-build machines may require the -A variant while later production shifted to -D or -H. The Turbocharger 7030304 replacement covers the verified intersection of these references, but confirming which suffix your specific engine needs requires the machine serial prefix. Skid steer loaders in the S510 through S650 range show similar variant splitting across model years.

Oil Port Orientation and the 90-Degree Trap

The most common physical mismatch on GT1241Z variants is oil inlet and drain port positioning. On some D24 builds the drain flange sits rotated relative to others — the bolt pattern engages, the gasket seats, but the drain hose cannot reach without kinking. I have seen a Doosan D24 owner hold a removed turbo against a new unit and confirm the outer diameter and mounting flange matched perfectly, only to discover after installation that the intake port was offset by 90 degrees [NEED_CITE: turbocharger oil port orientation verification for compact diesel engines]. The machine ran for minutes before crankcase pressure forced oil past the seals. Always physically compare port positions against the removed unit or the engine block casting before committing to installation.

Reading the Metal When the Nameplate Is Gone

Heat and oil film erase turbocharger nameplates faster than almost any other engine component. When the tag is illegible, identification shifts to the machine model and engine serial number. Cross-reference verification covering all nine listed reference numbers — from the original 7030304 through the superseded 795787 series and the 150105-00044 suffix family — maps each back to the applicable GT1241Z variant. Photographs of the removed unit's compressor housing, turbine housing, and oil port flange provide secondary confirmation when numbers are entirely absent.

What Superseded Numbers Actually Mean for Your Order

Garrett and supplier reference tables copied between aftermarket sellers often carry forward outdated mappings. A number that was current in 2016 may have been superseded twice, and the final replacement may differ in compressor trim or wastegate calibration. This cross-reference list has been verified against superseded-to-current paths so that a machine bearing any of the nine listed numbers can be matched to the correct build. Requesting a sample unit for bench fitment before a batch order eliminates the remaining physical variables [NEED_CITE: aftermarket turbocharger cross-reference accuracy standards].

The Cost of Shipping a Turbo That Physically Bolts On but Does Not Fit

A turbocharger that bolts to the manifold and connects to the oil supply but has the wrong compressor trim will not produce rated boost. The engine runs, the operator assumes the problem is elsewhere, and weeks pass before the turbo is re-examined. In other cases, a slight port misalignment is forced into place with modified hose routing, creating a restriction that accelerates bearing wear. The machine returns to service briefly, then fails again — this time with a destroyed turbo and potential engine damage from oil starvation. Fitment verification at the bench stage prevents both scenarios.

Why Buyers Source This Turbocharger Here

Own production lines and qualified sourced supply operate under a single warranty account, so whether your Turbocharger 7030304 ships from in-house inventory or a partner facility, the quality terms are identical. Eight product categories — including the seal kits, gaskets, and filters that accompany a turbo swap — consolidate into one consignment. Orders from one piece are accepted, which matters when a single machine is down and a full overhaul is not on the table. Guangzhou warehouse stock on fast-failure D24 components supports rapid dispatch. Part identification is available from a part number, machine model, photograph, or nameplate image, and cross-reference verification covers every superseded and alternate number in the D24 family. Technical confirmation on variant selection is available before purchase.

Documentation & Verification

• Commercial invoice listing GT1241Z model and cross-reference numbers applied
• Part compatibility sheet mapping your specific Bobcat or Doosan serial to the correct variant
• Dimensional inspection record covering port spacing and flange bolt pattern
• Warranty terms document covering manufacturing defects for 3–12 months
• Packing photographs showing anti-vibration foam and moisture-resistant carton
• HS code and customs documentation support for international shipment

Fitment Check Before Installation

• Compare oil inlet and drain port orientation against the removed turbocharger or engine block
• Verify compressor housing casting number matches the variant specified for your engine serial
• Check turbine housing flange bolt pattern against the exhaust manifold before mounting
• Confirm wastegate actuator linkage type and orientation match the original unit
• Bench-fit the unit and rotate the compressor wheel by hand to check free movement
• If any dimension does not match, halt installation and contact the supplier with photographs

Getting the Right Turbo Identified for Your Machine

Provide your Bobcat or Doosan machine model, engine serial number, and any legible markings from the removed unit. If the nameplate is gone, photographs of the compressor housing, turbine housing, and oil drain flange are enough to begin identification. A cross-reference check against the D24 variant list confirms which of the nine reference numbers maps to your specific build before anything ships.

Frequently Asked Questions

Q: How do I confirm this turbo fits my specific Bobcat or Doosan machine model? A: Provide the machine model and engine serial prefix. The Doosan D24 was produced across multiple build generations, and each maps to a specific GT1241Z variant. We cross-reference your serial against the applicable 150105-00044 suffix and the superseded 795787 series to confirm the correct oil port orientation and compressor trim before dispatch.

Q: The 150105-00044 number has multiple suffixes — which one is correct for my engine? A: The A, C, D, and H suffixes correspond to different D24 engine build windows. The correct suffix depends on your engine serial number and machine model year. We verify the mapping and can supply photographs of the port configuration for your variant so you can compare against the removed unit before installation.

Q: My old turbo has a superseded number — is there a direct replacement path? A: Yes. The cross-reference list covers the full superseded chain from the original 7030304 through the 795787 series and all 150105-00044 variants. Provide your existing number and we confirm whether it maps directly to the current GT1241Z build or requires a variant adjustment based on your specific engine generation.

Q: I only have the machine model, not the part number — can you identify the right turbo? A: The machine model narrows the range, but the engine serial prefix is needed to confirm the exact variant. If the serial plate is unreadable, photographs of the removed turbocharger's compressor housing, oil ports, and turbine flange allow visual identification against the known D24 build configurations.

Q: Can I order a sample to verify fitment before placing a larger order? A: Sample units ship from one piece. Buyers managing mixed fleets of Bobcat excavators, skid steers, and track loaders sharing the D24 platform typically order one unit, bench-fit it against the target machine, and confirm port alignment before committing to the remaining quantity.