Caterpillar C27 / C32 ECM | P/N 478-7928

Caterpillar C27 / C32 ECM | P/N 478-7928

PRODUCT OVERVIEW
The Caterpillar 478-7928 is an engine control module (ECM) for CAT C27 and C32 engines. Its catalogue description is "Control Group - Electronic". Typical applications include C27 / C32 powered machines (e.g. 990H wheel loader) and C27 / C32 industrial, marine and generator engines. It cross-references to 372-2901 (earlier part number), 274-1957 (earlier part number) and 10R-5646 (Cat Reman equivalent).
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.

PART NUMBER IDENTITY
Primary Part Number: 478-7928
Also listed as: 4787928 / 478 7928
Product Type: Engine Control Module (ECM)
Brand / Manufacturer: Caterpillar
Condition: New (unused)
Fits: C27, C32

CROSS-REFERENCE AND INTERCHANGE
372-2901 - earlier part number
274-1957 - earlier part number
10R-5646 - Cat Reman equivalent

APPLICATIONS AND FITMENT
C27 / C32 powered machines (e.g. 990H wheel loader) - C27 / C32
C27 / C32 industrial, marine and generator engines - A4
Always confirm against the part number on your existing unit or your engine / machine serial number.

TECHNICAL SPECIFICATIONS
Catalogue description: Control Group - Electronic
Programming: Flash to your ESN required

COMMON FAILURE SYMPTOMS
Engine power loss at cruise — below rated output despite clean air and fuel system
RPM overshoot during downhill operation — governor not limiting engine speed correctly
J1939 datalink — transmission or instrument cluster shows ECM offline
Fuel consumption increase of 10–15% without load or route change

PROGRAMMING BEFORE INSTALLATION
Caterpillar ECMs are engine-specific. The unit must be flashed with the correct software for your engine serial number (ESN) and set up with your configuration parameters using Cat ET before it will run the engine. Send us the ESN and the part number from your old ECM label - remote programming support is available.
Need it programmed for you? See our CAT ECM Programming Service (orderecm.com/products/cat-ecm-programming-service-remote-flash-configuration-all-cat-ecms).

CONDITION AND WARRANTY
Condition: New (unused)
An unused unit. Packaging can vary by batch, and we can send photos of the actual unit 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 ORDER
1. Compare the part number on your existing unit with 478-7928 or a cross-reference listed above.
2. Send us a clear photo of your old part's label and your engine serial number (ESN) - we confirm the match before you buy.
3. Need more than one, or a quote for your fleet? Ask us for a bundle price.

FREQUENTLY ASKED QUESTIONS
Is the 478-7928 new or used?
New (unused). An unused unit. Packaging can vary by batch, and we can send photos of the actual unit before dispatch.
What part numbers does the 478-7928 cross-reference to?
372-2901, 274-1957 and 10R-5646 - see the cross-reference list above for how each number relates.
What does the 478-7928 fit?
C27 and C32. Match your old unit's part number or send us your serial number to confirm.
Does the 478-7928 need programming?
Caterpillar ECMs are engine-specific. The unit must be flashed with the correct software for your engine serial number (ESN) and set up with your configuration parameters using Cat ET before it will run the engine. Send us the ESN and the part number from your old ECM label - remote programming support is available.
Is there a core charge?
No. The price is outright - no core charge and no core return required.
How fast is shipping?
FREE worldwide express shipping (DHL / FedEx / EMS) with tracking, dispatched from Sharjah, UAE within 1–4 business days of cleared payment.
What if it is the wrong part?
You are covered by our 30-day money-back guarantee (unit returned unused and uninstalled) and a 365-day replacement warranty.

ORDER BENEFITS
FREE worldwide shipping is included with every OrderECM product. Your order is also backed by a 30-day money-back guarantee and a 365-day replacement warranty.

ALSO SEARCHED AS
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