Hyundai R800LC-9-Compatible Fuel Injector 4928260 – Model-Matched

Verified Cross-Reference — Every 4928260 variant mapped to specific engine serial breakpoints before dispatch.

Technical Specifications

Application Suitability

Why the Same Part Number Ships in Multiple Variants

The base number alone does not guarantee fitment on your specific machine serial range.

A single injector casting can serve several engine generations, yet the electrical connector orientation, fuel inlet port angle, or return line fitting may differ between variants. In field operations across Southeast Asian mining sites, I have seen machines sit idle because the injector body matched but the solenoid harness could not reach the connector without stretching [NEED_CITE: Cummins ISX injector variant identification procedures]. The part number on the old unit may also have been superseded, and cross-reference tables copied between sellers sometimes carry forward errors that only surface during physical installation.

Mapping Engine Serial Ranges to the Correct Injector Variant

The Cummins ISX15 CM2250, ISX CM570, and QSX15 CM570 each have distinct calibration requirements that dictate which Fuel Injector 4928260 variant is correct. The CM2250 typically uses a different solenoid resistance value compared to the CM570, and fitting the wrong variant will either trigger an injector circuit fault code or cause uneven fuel delivery across cylinders. Before confirming an order, providing the engine serial number plate photograph allows the technical team to pinpoint which production run your engine belongs to and whether the 4928260, 4928260PX, or 4928260RX applies.

Port Orientation and Connector Position Verification

The physical interface between the injector and the fuel rail involves more than bolt pattern alignment. The fuel inlet port angle must match the rail geometry, and the electrical connector must face the correct direction for the wiring harness to reach without tension. On the Hyundai R800LC-9, the engine compartment layout positions the harness differently than on the R800LC-7A, meaning an injector that physically seats into the cylinder head may still fail installation due to connector misalignment [NEED_CITE: heavy equipment fuel system connector orientation standards]. Comparing the port clocking angle and connector clocking on your removed injector against the replacement unit before final assembly prevents a situation where the machine is partially reassembled only to discover the mismatch.

Decoding Cross-Reference Numbers and Superseded Part Numbers

The numbers 4928260PX and 4928260RX represent specific variant designations within the same injector family, often tied to production date codes or engine calibration revisions. A cross-reference table that lists all three as interchangeable without qualification can lead to selecting the wrong variant for a machine that requires a specific flow code or solenoid type. The PX and RX suffixes may indicate revised internal components, different spray pattern nozzles, or updated sealing configurations that affect combustion characteristics. Verifying which suffix your engine build requires—rather than assuming any of the three will work—eliminates the risk of installing a unit that causes rough idle, excessive smoke, or injector timing errors.

Understanding the Internal Parameters That Determine Compatibility

The injector nozzle geometry, solenoid response time, and fuel delivery volume per stroke are calibrated to match the engine control module mapping for a specific engine variant. An injector designed for the ISX15 CM2250 delivers fuel at a rate and spray angle optimized for that engine's combustion chamber design, and substituting a variant calibrated for the QSX15 CM570 can result in incomplete combustion or elevated exhaust temperatures. The sealing surfaces between the injector body and the cylinder head must also match in diameter and surface finish to prevent compression leakage or fuel seepage into the crankcase. These internal parameters are not visible from the exterior, which is why serial-number-level identification remains the only reliable method for confirming the correct variant [NEED_CITE: diesel injector calibration matching requirements for electronic control systems].

The Hidden Cost of Installing a Variant That Almost Fits

When an injector variant has the correct body dimensions but incorrect port orientation or solenoid specification, the immediate result is either a failed installation or an engine that starts but runs poorly. The machine may sit partially disassembled in the workshop while a replacement is sourced, extending downtime beyond what a simple parts swap should require. In mining and construction environments where equipment availability directly affects project timelines, a two-day delay caused by a variant mismatch carries consequences far beyond the cost of expedited shipping on a corrected unit [NEED_CITE: equipment downtime cost factors in mining operations]. Partially installed injectors that are forced into position can also damage the fuel rail sealing surfaces or the cylinder head injector bore, creating secondary repair requirements that compound the original problem.

Why Procurement Accuracy Matters at the Component Level

Our technical team verifies every Fuel Injector 4928260 order against the buyer's engine serial number and machine model before dispatch, cross-referencing the correct variant from the 4928260, 4928260PX, and 4928260RX range. Guangzhou warehouse stock on common injector variants allows rapid turnaround when the correct match is confirmed, and sample units are available for fitment testing before bulk commitment on fleet-wide orders. The identification process accepts machine nameplate photographs, engine serial images, or worn part number photos as starting points, with superseded number tracing handled by the technical desk rather than left to the buyer. Both self-produced and sourced supply lines carry the same warranty terms, so the coverage remains consistent regardless of production origin.

Documentation & Verification

• Commercial invoice listing injector variant, flow code, and engine serial match confirmation
• Cross-reference sheet showing 4928260, 4928260PX, 4928260RX applicability breakpoints (reference only)
• Dimensional inspection record covering port angle, connector position, and sealing surface diameter
• Six-month warranty documentation covering manufacturing defects from date of receipt
• Pre-dispatch photographs showing injector body markings, packaging condition, and part label
• HS code and customs classification support for international fuel system component shipments

Fitment Check Before Installation

• Compare fuel inlet port clocking angle on new injector against removed unit before seating into cylinder head.
• Verify electrical connector orientation matches wiring harness reach without cable tension or bending.
• Check injector body length and flange diameter against cylinder head bore specification for proper seating depth.
• Confirm solenoid resistance value with multimeter matches engine ECM expected range for your engine variant.
• Inspect sealing surfaces on both injector and cylinder head for scoring or residue that would compromise seal integrity.
• If any dimension or port position does not match, halt installation and contact technical support with photographs.

Requesting a Fitment Confirmation

Provide your machine model, engine serial number plate photograph, or clear image of the existing injector body markings so the technical team can verify which variant within the 4928260 family matches your specific build. For fleet orders covering multiple machines, include each unit's serial number individually to account for production run variations. Sample units can be arranged for physical trial fitting before committing to full quantity procurement.

Frequently Asked Questions

Q: How do I confirm this injector fits my specific R800LC serial number? A: Submit a photograph of your engine serial number plate or the existing injector body markings. The technical team cross-references your serial against the production breakpoints for the ISX15 CM2250, ISX CM570, and QSX15 CM570 to identify whether the 4928260, 4928260PX, or 4928260RX variant applies to your machine. This verification step is included before any order confirmation.

Q: What is the difference between 4928260, 4928260PX, and 4928260RX? A: These designations represent variant configurations within the same injector family, often tied to different solenoid specifications, nozzle spray patterns, or production revisions. Each variant corresponds to specific engine calibration requirements. Assuming interchangeability without checking your engine serial range risks installing a unit with incorrect flow characteristics or connector type.

Q: The old injector nameplate is worn and unreadable—can I identify it by machine model alone? A: Machine model narrows the range but may not pinpoint the exact variant, as production changes can introduce different injector configurations within the same model designation. Providing the engine serial number or a photograph of the injector body casting marks gives a more reliable identification path than model alone.

Q: Can I order a single sample for fitment testing before placing a bulk order? A: Yes. A single unit can be dispatched for physical trial installation on your machine to confirm port orientation, connector alignment, and engine performance before committing to fleet-wide quantities. This approach is recommended when dealing with mixed serial ranges across multiple machines.

Q: What happens if the variant I receive does not match my engine? A: Contact the technical team immediately with photographs showing the mismatched interface—such as connector orientation or port angle discrepancy. The six-month warranty covers manufacturing defects, and the identification process is reviewed to determine where the serial reference diverged from the supplied variant.