Verified Fitment Turbocharger 7030304 Compatible with Bobcat S550 D24

Verified Cross-Reference — Every GT1241Z turbocharger is checked against machine serial data to confirm port orientation and flange match before shipping.

Technical Specifications

Application Suitability

Why the Same Part Number Ships in Four Variants

A correct turbo fitment depends on the suffix letter, not just the base number.

Buyers regularly submit a part number pulled from a faded label and assume the replacement is universal. The base number 150105-00044 carries suffix variants A, C, D, and H across Doosan D24 production runs. These suffixes can correspond to changes in oil port clocking, wastegate actuator calibration, or compressor housing orientation. Copied cross-reference tables often collapse all variants into a single line, masking the differences. [NEED_CITE: aftermarket turbocharger variant identification practices for compact diesel engines]

The GT1241Z Turbocharger for Doosan D24 / Bobcat cross reference fitment becomes accurate only when the machine serial number and suffix letter are confirmed together, not when a parts catalog lookup is treated as final.

Fitment Coverage Across the Bobcat and Doosan D24 Range

The GT1241Z platform serves the full spectrum of Bobcat machines powered by the Doosan D24 engine — from compact excavators like the E42 and E45 up through skid steers in the S-series and compact track loaders in the T-series. Each machine family presents a different physical environment around the turbo. Skid steers expose the unit to heavy vibration and heat cycling from tight engine bay enclosures, while excavators subject it to prolonged high-load cycles during trenching. Identifying the correct variant starts with the machine model and serial range, not a generic catalog match.

Interface Verification Before the Turbo Leaves the Shelf

Oil feed and return port orientation is the most common source of field installation problems. The GT1241Z Turbocharger for Doosan D24 / Bobcat cross reference fitment requires checking port clock position against the specific engine build, as port angles shifted between D24 production revisions. The exhaust flange bolt pattern and gasket surface must also match. When a machine has been previously rebuilt or the turbo replaced with a non-standard unit, the existing plumbing may not reflect factory configuration. Requesting port position photographs and flange dimensions before dispatch eliminates the most frequent fitment mismatch. [NEED_CITE: turbocharger oil port alignment standards for small-bore diesel engines]

Reading the Specs That Actually Matter

The GT1241Z designation identifies a Garrett-pattern platform sized for the Doosan D24 displacement range. The compressor and turbine wheel trim must match the engine's airflow demand; an incorrect trim causes either sluggish boost response or excessive exhaust backpressure. Wastegate actuator calibration determines the boost pressure curve — a unit calibrated for a different power rating will deliver incorrect manifold pressure, leading to either power loss or elevated exhaust temperatures. The journal bearing specification and oil feed restriction orifice size must align with the D24 oil system pressure. These internal specifications are confirmed against engine build data, not assumed from the external part number alone.

What a Wrong Turbo Costs Beyond the Part Price

A turbo that physically bolts on but has incorrect port orientation will leak oil onto hot exhaust components, creating a fire hazard that may not appear until the machine is back under load. A unit with the wrong wastegate calibration produces symptoms that mimic fuel system faults, sending diagnostics down an unrelated path and consuming troubleshooting hours. When the error is discovered, the machine goes down a second time — once for the wrong install, once for the return and replacement. [NEED_CITE: turbocharger misapplication failure modes in compact construction equipment]

The GT1241Z Turbocharger for Doosan D24 / Bobcat cross reference fitment avoids these cascading costs only when variant-level verification replaces assumption.

Why Source This Turbo Through Our Process

Selected turbocharger lines are produced in our own Guangzhou facility, while complementary supply from ISO-certified partners carries identical quality control and warranty terms, giving consistent coverage across all variants. Our technical team confirms machine model, serial number, and port configuration before any unit ships, reducing the risk of field returns. A single account covers turbochargers alongside engine gaskets, seal kits, and air filtration components, so a complete job list consolidates under one reference. Sample units are available for physical fitment trials before you commit to a bulk order across mixed machine variants. Cross-reference verification covers superseded numbers in the 795787 series and their service replacements, ensuring discontinued part numbers map correctly to current production.

Documentation & Verification

• Commercial invoice lists turbo model GT1241Z with matched machine model and serial number for customs clarity
• Cross-reference sheet maps all listed OEM numbers (150105-00044, 795787 series) marked as reference only
• Dimensional inspection record covers port spacing, flange bolt pattern, and oil orifice size
• Warranty documentation specifies 3–12 months coverage against manufacturing defects
• Packing photographs confirm unit condition and protective wrapping before crate closure
• HS code and export documentation provided for international shipment clearance

Fitment Check Before Installation

• Compare oil feed and return port clock positions on the new GT1241Z against the removed unit or engine block ports
• Verify exhaust flange bolt hole spacing matches the machine's exhaust manifold pattern before gasket placement
• Inspect oil feed line and return line for restrictions or carbon buildup that could starve the new turbo bearings
• Pre-lubricate journal bearings with clean engine oil before initial startup to prevent dry-start bearing damage
• If port orientation does not match, do not force the connection — contact support with photographs for variant exchange

Inquiry Guidance for Accurate Fitment

Provide the machine model, serial number, and any legible numbers from the existing turbo nameplate or engine data plate. If the nameplate is corroded or painted over, send a clear photograph of the mounting face, oil port area, and exhaust flange so the correct variant can be confirmed. For fleet orders across multiple machine types, list each serial number individually to ensure every unit receives the exact variant it requires.

Frequently Asked Questions

Q: How do I confirm which GT1241Z variant fits my specific Bobcat serial number? A: Share your machine model and full serial number so we can cross-check the engine build revision. Suffix variants on the base number 150105-00044 correspond to different port orientations and actuator calibrations. We verify the correct configuration against serial range data rather than relying on catalog lookup alone, and can supply port position photographs before dispatch.

Q: My old turbo shows 795787-0003 but that number is discontinued — is 7030304 the correct replacement? A: The 795787-0003 was superseded through 795787-0007 and 795787-0016 before being consolidated under 7030304. These are all cross-reference only identifiers pointing to the GT1241Z platform. Confirm your machine serial number so we can verify the variant matches your specific engine build, as port orientation may differ across production runs.

Q: What are the differences between 150105-00044 suffix variants A, C, D, and H? A: Suffix letters on this base number typically indicate revisions to oil port clock position, wastegate actuator calibration, or compressor housing orientation tied to Doosan D24 engine build changes. Installing the wrong suffix variant can cause oil leaks or incorrect boost pressure. Provide your machine serial number so we identify which suffix applies to your engine.

Q: I only have my machine model with no readable part number — can you identify the turbo? A: Yes. Provide the machine model and serial number, and we will identify the correct GT1241Z variant from the equipment build data. If the serial plate is also unreadable, send photographs of the turbo mounting area, oil port configuration, and exhaust flange. We use these physical details to narrow down the correct unit.

Q: Can I get a sample unit to verify fitment before ordering for my entire fleet? A: Sample units are available for physical fitment checks before you commit to a bulk order. This is especially useful when your fleet includes machines from different production runs that may require different turbo variants. We supply the sample with full documentation so your workshop can confirm port positions, flange match, and clearance before fleet-wide procurement.