Caterpillar 3512B / 3516B / 3516C / C27 ECM | P/N 488-4875








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Product details
Caterpillar 3512B / 3516B / 3516C / C27 ECM
What Is This Part?
The Caterpillar 488-4875 is an engine control module (ECM) for CAT 3512B, 3516B, 3516C and C27 engines. Its catalogue description is "Engine Electronic Control Unit". Typical applications include 773G / 775G / 777 / 789D / 798 off-highway trucks and 3512B / 3516B / 3516C engines. It cross-references to 11R-0536 (Cat Reman exchange).
An engine control module is the engine's computer. It reads the speed/timing, boost, oil-pressure, coolant-temperature and fuel sensors, commands the electronic injectors (injection timing and fuel quantity), governs engine speed, applies the power rating stored in its flash file, protects the engine with derates and shutdowns, and logs the active and event codes that a technician reads with Cat ET. Common reasons for replacement are a no-start or no-injection fault, no communication with the diagnostic tool, repeated sensor-supply or internal ECM fault codes, intermittent shutdowns, and water or corrosion damage at the connectors.
Compatible Applications & Fitment
| Equipment / Application | Engine / Platform |
|---|---|
| 773G / 775G / 777 / 789D / 798 off-highway trucks | 3500 / C27 |
| 3512B / 3516B / 3516C engines | 3500 series |
⚠ Always confirm against the part number on your existing unit or your engine / machine serial number. Unsure? Message us — we reply within 24 hours.
Part Number Cross-Reference
| Part Number | Relationship |
|---|---|
| 488-4875 | This part (OEM part number) |
| 4884875 | Same part - alternate number / format |
| 20R-8183 | Same part - alternate number / format |
| 11R-0536 | Cat Reman exchange |
Also listed as: 4884875 · 488 4875 · 20R-8183
Technical Specifications
| OEM Part Number | 488-4875 |
| Brand / Manufacturer | Caterpillar |
| Part Type | Engine Control Module (ECM) |
| Catalogue Description | Engine Electronic Control Unit |
| Compatible Engines | 3512B, 3516B, 3516C, C27 |
| Programming | Flash to your ESN required |
| Condition | New (unused) |
| Warranty | 365 days from delivery |
Condition Details
An unused unit. Packaging can vary by batch, and we can send photos of the actual unit before dispatch. Caterpillar OEM part number, checked against the unit's label before dispatch. Covered by our 365-day warranty and 30-day money-back guarantee.
Core / exchange: outright price — no core charge and no core return required.
Before You Buy
- Compare the part number on your existing unit with 488-4875 or a cross-reference listed above.
- Not sure? Send us a photo of your old part's label and your engine serial number (ESN) — we confirm the match before you buy.
- Need more than one, or a quote for your fleet? Ask us for a bundle price.
Why Buy From OrderECM?
Shipping, Returns & Warranty
| Dispatch Time | 1–4 business days after cleared payment |
| Ships From | Sharjah, United Arab Emirates |
| Shipping Cost | FREE worldwide — express, fully tracked (DHL / FedEx / EMS) |
| Money-Back Guarantee | 30 days from delivery — full refund. Item must be returned in original, uninstalled condition; return shipping is paid by the buyer unless the item is not as described. |
| Warranty | 365 days from date of delivery |
Pairs well with

Caterpillar 3512B / 3516B / 3516C / C27 ECM | P/N 488-4875
Detailed Product Description
Free Shipping Worldwide
Bench-Tested Before Dispatch
FAQs
How do I confirm this ECM or ECU is compatible?
Match your old ECM part number, engine model, machine model, engine serial number, connector type, and ECM label before ordering. If you are unsure, send us clear photos of your old ECM or ECU label and connectors.
Does this ECM or ECU require programming?
Many diesel ECMs, ECUs, and engine control modules require programming, calibration, or parameter setup after installation. We strongly recommend installation and programming by a qualified diesel technician.
What information should I provide before ordering an ECM?
Please provide the old ECM part number, engine model, machine model, engine serial number, VIN if applicable, ECM label photo, connector photos, and any fault codes or technician notes if available.
Can I install an ECM myself?
Professional installation is recommended. Incorrect installation, wrong programming, wiring faults, wrong voltage, poor grounding, or incompatible application can damage the ECM and may affect warranty coverage.
Can a wrong ECM damage my engine or machine?
Using an incorrect ECM, ECU, or electronic control module can cause fault codes, performance issues, damage, or failure. Always verify part number, connector type, engine model, and application before installation.


