- Brand: Mercury
- Size: 240 SJ
- Style: EFI - V6
- Condition: Used
- Notes: Freshwater Good Condition
- SKU: 26-15264 ETC
- Manufacturer Part Number: 824003A31 824003T31
- Country of Manufacture: United States
- Motor & Engine Type: Mercury
- Part Type: Motors, Engines & Components
- Other Part Number: N/A
- Inventory Number: 26-15264 ETC
- Website Category: Ignition and Electrical Systems
- Website Sub Category: Switchboxes, Power Packs, CDI, EMM, CDM
- UPC: N/A
Part Numbers
824003A31 824003T31
Description
OEM Mercury / Mariner Engine Control Unit (ECU).
This ECU controls fuel injection and ignition timing for the Mercury 240 HP EFI V6 SportJet platform used in late-1990s and early-2000s jet drive engines.
- Original OEM Mercury ECU
- Direct replacement for 824003A31
- Superseded by 824003T31
- Will replace some smaller HP EFI variants within the same ECU family, but buyer must verify compatibility prior to installation
Reference schematic:
https://www.boats.net/catalog/mercury-sportjet/jet-drive/240hp/240-efi-m2-sportjet-jet-drive-powerhead-0e373939-thru-0e384499/electrical-components-ecu-assembly
Condition
- No visible damage
- Very minor scuffs and scratches (see pictures)
- Connectors and housing are in good condition
- Ready to install
- Untested
All electronics are tested when possible but may not always be fully bench-tested.
Fitment
Mercury / Mariner 240 HP EFI V6 SportJet engines
Approximate OEM reference fitment includes engines within the following serial ranges:
1999-2000
Serial range 0E370718 – 0E379930
2000
Serial range 0E373939 – 0E384499
2000-2001
Serial range 0E379931 – 0E406399
Used on Mercury 240 EFI M2 SportJet engines commonly found in Mercury SportJet powered jet boats and Sea-Doo jet boat applications.
Because Mercury used several ECU calibrations within this family, verify compatibility by part number and engine serial number before purchasing.
Warranty
This item is sold with a 1 YEAR WARRANTY through Southcentral Outboards.
If the part does not function properly within the warranty period, we will replace it with another unit. If a replacement is not available, a refund will be issued.
Disclaimer
We are using various web resources to cross-reference and describe our parts. These are not always 100% accurate but accurate to the best of our knowledge.
Please verify fitment by model or serial number before purchasing. If you are unsure, feel free to contact us.
If you order this incorrectly or change your mind within 45 days, you may return it with a 20% restocking fee. Buyer is responsible for original and return shipping.

