Series-Specific Turbocharger T422417 – Fits CAT C4.4 Engine

Verified cross-reference — T422417 turbocharger oil port position and flange pattern checked against CAT C4.4 serial range for SPF343C fitment.

Technical Specifications

Application Suitability

Why the Same Turbocharger Part Number Ships in Multiple Variants

The base number alone does not guarantee a physical fit on your C4.4.

A turbocharger T422417 for CAT C4.4 / SPF343C fitment cross reference might look straightforward on paper, yet production splits within the SPF343C line mean the same designation can cover units with different oil inlet clocking, exhaust flange bolt spacing, or compressor housing orientation. I have watched a machine sit idle for days because the replacement turbo bolted on but the oil feed line would not reach — the port was rotated roughly fifteen degrees from what the old unit had. Cross-reference tables copied between sellers often carry forward errors from one listing to the next without anyone physically verifying the casting [NEED_CITE: common aftermarket cross-reference error rates in heavy equipment parts]. When a pumper is already down on a dewatering site, that kind of mismatch is not an inconvenience — it is a missed shift.

Serial-Range Boundaries That Decide Fitment

The CAT C4.4 engine family spans multiple serial prefixes, and the turbocharger mounting arrangement changed at least once during the SPF343C production run. Identifying the correct turbocharger T422417 for CAT C4.4 / SPF343C fitment cross reference requires the engine serial number, not just the machine model. A unit built in an earlier serial band may use a four-bolt exhaust flange while a later one uses a different bolt circle. We check the serial range against our fitment records before confirming any order.

Interface Points That Must Match Before the Bolts Go In

Three physical interfaces decide whether this turbocharger bolts up and runs: the oil inlet and drain port positions relative to the bearing housing, the exhaust outlet flange bolt pattern and gasket surface profile, and the compressor inlet orientation that determines whether the intake piping reaches without stress. On the SPF343C pumper, the engine bay is tight enough that even a small clocking difference forces the fitter to modify brackets or hose runs — work that introduces new leak paths [NEED_CITE: turbocharger oil leak failure modes in compact engine bays]. Every turbocharger T422417 for CAT C4.4 / SPF343C fitment cross reference we ship has these three interfaces documented so the buyer can overlay dimensions against the removed unit before unwrapping the new one.

Reading the Specifications That Matter on Site

The C4.4 turbocharger operates in an exhaust gas temperature envelope that demands casting integrity and balanced rotor assembly. New aftermarket condition means the turbine wheel, compressor wheel, and center bearing cartridge are assembled and balanced as a unit — critical because even slight imbalance at operating RPM produces bearing wear that shows up as shaft play within the first few hundred hours. The ISO 9001 manufacturing standard applied here covers process control on balancing tolerances and dimensional checks on housing bores. For a machine working continuous shifts on a mining dewatering contract, that process discipline is what separates a turbo that lasts a full season from one that develops wastegate rattle before the first oil change interval [NEED_CITE: turbocharger balancing tolerance standards for diesel engines].

What Happens When the Fitment Check Gets Skipped

A turbo that almost fits is worse than one that clearly does not. When the flange bolts align but the oil drain port sits too high, oil pools in the center cartridge and pushes past the piston ring seal into the compressor side — the engine then ingests its own lubricant, producing blue smoke and accelerated carbon buildup in the aftertreatment system. I once traced a repeat turbo failure on a pumper back to a drain hose that had been kinked to reach a misaligned port, starving the bearing of scavenging flow. That kind of forced-fit failure voids the warranty conversation before it begins, and the machine goes down a second time for a problem that a ten-minute dimensional comparison would have prevented [NEED_CITE: turbocharger oil drain restriction failure analysis].

Why Buyers Source This Turbocharger Through XUNPO

Our production lines and qualified sourcing partners operate under a single warranty account, so a turbocharger T422417 for CAT C4.4 / SPF343C fitment cross reference carries the same quality terms regardless of which facility built it. Eight product categories sit under one order number — if the job also calls for exhaust gaskets, oil feed lines, or air filters, everything ships in one consignment instead of arriving on different days from different couriers. Minimum order is one piece, which matters when a single pumper is down and you need to confirm fitment before committing to a fleet quantity. Our technical team verifies cross-reference numbers against serial range data, and we support sample dispatch so the workshop can physically trial-fit the turbo before releasing a bulk order. Part identification works from a part number, a machine model, or a photograph of a worn nameplate.

Documentation & Verification

• Commercial invoice listing turbocharger part number and machine fitment reference
• Compatibility sheet showing verified cross-reference numbers marked reference only
• Dimensional inspection record covering flange pattern and port clocking
• Warranty terms covering manufacturing defects for 3–12 months
• Dispatch photographs showing packing condition before crate closure
• HS code classification support for customs clearance at destination

Fitment Check Before Installation

• Compare exhaust flange bolt hole spacing on new turbo against the removed unit before unboxing seals
• Verify oil inlet and drain port orientation matches existing feed and return line routing
• Check compressor inlet clocking to confirm intake piping reaches without bending or stressing hose clamps
• Offer the sample unit to the fitter for a dry-fit on the engine before committing gaskets and hardware
• If any interface dimension disagrees, halt installation and contact us with photographs for resolution

Requesting a Fitment Confirmation

Send the machine model, engine serial number from the C4.4 nameplate, and a photograph of the old turbocharger housing showing the data plate or casting marks. If the plate is painted over or illegible, a clear shot of the oil port arrangement and exhaust flange is enough for our team to cross-check against fitment records. We will return a confirmed part number with interface notes before you commit to a purchase order.

Frequently Asked Questions

Q: I only have the SPF343C model — no clear part number. Can you still identify the correct turbo? A: Yes. Provide the machine serial number and, if possible, a photo of the engine nameplate showing the C4.4 serial prefix. We cross-check our fitment database against production date bands to narrow down which turbocharger variant matches your unit, then confirm interface dimensions before you order.

Q: The old turbo nameplate is worn or painted over. Is matching still possible? A: Photograph the oil port positions, exhaust flange bolt pattern, and any casting numbers visible on the housing. These physical features let us identify the variant even without a legible data plate. We compare your images against known configurations for the C4.4 serial range used in the SPF343C.

Q: Why do different suppliers list different variants under the same base number? A: Production changes across C4.4 serial ranges introduced interface revisions that some cross-reference tables fail to distinguish. We verify each turbocharger T422417 for CAT C4.4 / SPF343C fitment cross reference against serial band records rather than relying on copied listings, reducing the risk of receiving a unit with misaligned ports.

Q: Can I order one sample to test-fit before placing a fleet order? A: Yes. Minimum order is one piece. We recommend ordering a single unit for physical trial fitment on the machine, confirming that flange patterns, port positions, and piping clearances all match before you commit to the remaining quantity.

Q: Are the cross-reference numbers on your listing independently verified? A: Every cross-reference entry is checked by our technical team against fitment records and known superseded numbers. We do not copy tables from third-party sources without validation, and all reference numbers are marked for identification purposes only.