$1,995
+ $500 refundable core deposit (90-day return window). No-deposit option available at checkout: send your core first.
In stock. Ships today on orders placed by 3 PM Central. Need it tomorrow? Overnight rush is $250 at checkout.
2-year transferable warranty · Programmed to your truck at no charge · Core deposit refunded on return
Failed flash recovery available. Start a repair →
On every Cat 70-pin ECM we repair, we upgrade the injector drivers for durability and replace the internal battery. Lifetime warranty on the repair. Start a repair →
Calibration transfer included. Buy this exchange unit and send us your old ECM with your VIN. If it still communicates, we copy your calibration over to the replacement at no charge.
Prefer to fix your own unit?
Flat rebuild$745 $525 sale through October 31 (bench fee included) · 3 to 5 days on the bench — you keep your original ECM.
Start a repair instead →
Flat rebuild
Start a repair instead →
| Part Number | 240-5304 |
| Brand | Caterpillar |
| Condition | Remanufactured |
| SKU | NL-CAT-240-5304 |
| Warranty | 2-year transferable warranty |
| ADEM generation | ADEM 3 (70-pin) |
| ECM P/N cross-reference | 240-5304, 322-3603, 348-2378, 10R-4092, 10R-8982 |
About the Caterpillar Machine 240-5304 ECM
The 240-5304 is the ADEM 3, 70-pin engine control module for the Caterpillar Machine.
Cat's remanufactured number for this ECM is 10R-4092, 10R-8982. It replaces the OEM ECM part numbers 240-5304, 322-3603, 348-2378. Cat engine arrangement numbers: 240-5304, 322-3603, 348-2378, 10R-4092, 10R-8982.
We repair the Machine 240-5304 ECM on the bench and supply tested remanufactured exchange units, programmed to your engine and ready to install. This one is on the shelf: order by 3 PM Central and it ships today.
Remanufactured Caterpillar ADEM III 70-pin machine and industrial ECM, part number 240-5304. In stock. Fits Cat 3126B, C-10, C-12, C-15 and C-16 powered machines: 322C and 325C excavators, 938G II to 988G wheel loaders, 120H to 16H motor graders, 725 to 740 articulated trucks, 814F to 836G compactors and dozers, and more. Order under your part number: 240-5304, 322-3603, 348-2378, or Cat reman 10R-4092 and 10R-8982. We ship the equivalent 240-5304 programmed to your machine. Send your machine serial and engine serial at checkout. Calibration transfer included. 2-year warranty. Core exchange required. $500 core deposit refunded when your old ECM returns within 90 days.
Common Cat ECM failures we repair
Cat ADEM ECMs tend to fail the same few ways. We fix all of these on the bench, every day:
- Injector driver failure. A dead hole or misfire when the ECM stops driving an injector. We repair the driver circuit and bench-test every channel.
- Lost customer parameters. The settings programmed to your engine drop out. We recover and reload them.
- Runs, but no communication. The engine runs but won't talk to Cat ET. We get communication back so it can be read and programmed.