286-4552 Fuel Injector CAT C7 Application 20R-5504 Cross Reference Check

286-4552 Fuel Injector – CAT C7 Application, 20R-5504 Cross-Reference Check, Factory-Tested Replacement

Product Overview
I supply the 286-4552 fuel injector as an aftermarket replacement option for confirmed Caterpillar C7 applications. Public aftermarket catalogs and B2B parts sources list 286-4552 as a C7 fuel injector. Because application data can vary with engine configuration and equipment serial number, I verify the original part number and engine information before confirming a B2B order.
I do not describe this product as a genuine Caterpillar injector, Cat Reman component or OEM-packed product unless the specific unit, packaging and supporting documentation have been independently verified.

Product Snapshot

Application & Compatibility
For 286-4552, I recommend identifying the engine and the injector before shipment. The safest matching information is the original injector number, engine model, machine model and serial number when available. A machine model alone is not sufficient because equipment can be supplied with different engine configurations or fuel-system versions.
If the original injector is removed, a clear photograph of the part number and visible connector/body features can help me confirm the requested version before quotation.

Cross-Reference Control
Some aftermarket catalogs associate 286-4552 with additional numbers, while other sources list different replacement or reman numbers for the C7 family. I therefore treat cross-reference lists as identification aids rather than automatic interchangeability claims. If you require a specific replacement number, I will verify it against the engine/application before shipment.

How I Control Injector Quality

• Part-number and configuration identification before packing
• Visual inspection of the injector body, connector and sealing areas
• Dimensional and assembly checks against the applicable product specification
• Leakage/sealing inspection
• Performance or test-bench verification where the applicable test specification is available
• Final inspection and quantity check before export packing

Diagnosis & Installation
When a C7 engine shows hard starting, rough idle, smoke, weak acceleration or reduced power, I do not assume that the injector is automatically the only cause. Fuel contamination, fuel-supply problems, electrical/control faults, air ingress, compression issues and other engine conditions can create similar symptoms.
Before installation, I recommend checking the part number, engine configuration, fuel-system cleanliness, sealing components and the applicable service procedure. Where the application requires electronic calibration or diagnostic procedures, these should follow the engine manufacturer's service requirements rather than a generic statement such as “plug and play.”

B2B Supply Support
We support international distributors, diesel repair shops, construction-equipment maintenance companies and fleet buyers. For repeat orders, I can work from an agreed part-number and inspection specification so that the same standard is applied across future batches.

FAQ
Does 286-4552 fit a Caterpillar C7.3 engine?
I would not publish C7.3 as a confirmed application for 286-4552 without serial-number or manufacturer documentation. Current public parts sources consistently identify 286-4552 with the Caterpillar C7 family.
Is 286-4552 a genuine Caterpillar injector?
Not unless the actual unit and supporting documentation prove genuine Caterpillar origin. Our aftermarket product should be identified as an aftermarket replacement.
Can I use a cross-reference number instead?
A cross-reference can help identify a replacement, but I recommend confirming the exact engine configuration before treating two numbers as interchangeable.
Do you provide injector test records?
Where the agreed product specification includes bench testing and a corresponding record is available, we can provide the applicable inspection documentation for the supplied batch.
What should I send for a fitment check?
Send the original injector number, engine model, machine model and serial number if available. A clear photo of the removed injector is also useful.

Our Technical Responsibility
I do not want a professional buyer to choose an injector from a keyword or a copied cross-reference table alone. My responsibility is to verify the requested part as far as the available evidence allows, identify application uncertainty, and separate documented specifications from claims that still need confirmation.

Brand & Compatibility Disclaimer
Caterpillar, Cat and related product names are trademarks of Caterpillar Inc. This page is for identification and aftermarket replacement purposes only and does not imply manufacture, distribution or endorsement by Caterpillar unless expressly stated and independently verified. Compatibility should be confirmed before ordering.

Technical Review
Technical Responsibility: Product Application & Quality-Control Team
Reviewed For: 286-4552 Fuel Injector Application
Review Date: September 2026

Product Evidence

• Real product photograph showing the 286-4552 marking
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• Close-up of connector, body and sealing areas
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