2003 Mazda B3000 Engine Computer

2003 Mazda B3000 Engine Computer (No parts in stock)

Select Option:Change Vehicle Change Part

Summary
Year:	2003change
Make:	Mazdachange
Model:	B3000change
Item:	Engine Computer
Condition:	OEM Used
Items Available:	0
Price Range:	N/A
Local Discount:	N/A
Returns:	Cancellation & Return Policy

Item:	Engine Computer change
Condition:	OEM Usedchange
Items Available:	0
Price Range:	N/A
Local Discount:	N/A

Select the right ECU/ECM for your 2003 Mazda B3000

This part may have multiple fitment options depending on your vehicle's engine, drivetrain, and configuration. To ensure proper compatibility, please select the correct fitment below. If you’re unsure, we strongly recommend checking your VIN or vehicle build details before ordering. You can update or change the fitment selection at any time.

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 2L5F-AD

Select Fitment This fitment option is for 2003 Mazda B3000, select this option for Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 2L5F-AD
Items in stock: 6

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 2L5F-BD

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 2U7A-DCA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 2U7A-DCB

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 2U7A-DCC

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 2U7A-DDA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 2U7A-DDB

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 2U7A-DDC

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3L5A-GC

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3L5A-Dark Green

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3L5A-high compression

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3L5A-HD

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3L5A-HE

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3L5A-JB

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3L5A-JC

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3U7A-AUA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3U7A-AUB

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3U7A-FFA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Automatic Transmission ID 3U7A-FHA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 2L5F-DD

Select Fitment This fitment option is for 2003 Mazda B3000, select this option for Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 2L5F-DD
Items in stock: 0

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 2U7A-DEA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 2U7A-DEB

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 2U7A-DEC

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3L5A-LC

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3L5A-LD

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3L5A-MC

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3L5A-MD

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3L5A-ME

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3L5A-NB

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3L5A-NC

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3U7A-AVA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3U7A-AVB

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3U7A-FGA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x2 Manual Transmission ID 3U7A-FJA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Automatic Transmission ID 2L5F-BD

Select Fitment This fitment option is for 2003 Mazda B3000, select this option for Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Automatic Transmission ID 2L5F-BD
Items in stock: 1

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Automatic Transmission ID 2U7A-DDA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Automatic Transmission ID 3L5A-high compression

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Automatic Transmission ID 3L5A-HD

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Automatic Transmission ID 3L5A-HE

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Automatic Transmission ID 3U7A-FFA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Manual Transmission ID 2L5F-Edition

Select Fitment This fitment option is for 2003 Mazda B3000, select this option for Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Manual Transmission ID 2L5F-Edition
Items in stock: 0

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Manual Transmission ID 2U7A-DFA

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Manual Transmission ID 2U7A-DFB

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) Excluding flex fuel vehicle 4x4 Manual Transmission ID 2U7A-DFC

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) flex fuel vehicle (FFV) ID 2L5A-CB

Select Fitment This fitment option is for 2003 Mazda B3000, select this option for Electronic Control Module (Passenger Side rear firewall) flex fuel vehicle (FFV) ID 2L5A-CB
Items in stock: 3

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) flex fuel vehicle (FFV) ID 2L5A-CC

Select Fitment This fitment option is for 2003 Mazda B3000, select this option for Electronic Control Module (Passenger Side rear firewall) flex fuel vehicle (FFV) ID 2L5A-CC
Items in stock: 0

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) flex fuel vehicle (FFV) ID 2L5A-CD

Select Fitment This fitment option is for 2003 Mazda B3000, select this option for Electronic Control Module (Passenger Side rear firewall) flex fuel vehicle (FFV) ID 2L5A-CD
Items in stock: 3

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) flex fuel vehicle (FFV) ID 2L5A-CE

Select Fitment This fitment option is for 2003 Mazda B3000, select this option for Electronic Control Module (Passenger Side rear firewall) flex fuel vehicle (FFV) ID 2L5A-CE
Items in stock: 3

ECU/ECM - Electronic Control Module (Passenger Side rear firewall) flex fuel vehicle (FFV) ID 2U7A-FZA

Select Fitment This fitment option is for 2003 Mazda B3000, select this option for Electronic Control Module (Passenger Side rear firewall) flex fuel vehicle (FFV) ID 2U7A-FZA
Items in stock: 0

Interchange Fitment FAQs

Q: How does interchange fitment work for my 2003 Mazda B3000 ECU/ECM?

A: All ECU/ECM options shown on this page are matched to your selected configuration: 2003 Mazda B3000. Used OEM parts are dismantled from donor vehicles as complete assemblies, and a specific interchange fitment is assigned during this process. Every detail shown in the fitment notes must match your vehicle exactly.

Q: What is an interchange fitment option for my 2003 Mazda B3000?

A: An interchange fitment option defines the exact donor vehicle configuration your part came from. For 2003 Mazda B3000, this may include engine size, VIN code, transmission model, drivetrain, axle ratio, and other critical identifiers. This data comes from VIN decoding, OEM information, and physical inspection of the donor vehicle.

Q: Why must every fitment detail match for my 2003 Mazda B3000?

A: Used OEM parts are not universal. If any fitment detail for your 2003 Mazda B3000 differs from what is shown in the fitment notes, the ECU/ECM may not install, communicate with your vehicle, or function correctly. Always verify all fitment details before ordering.

Q: Where does the fitment information for my 2003 Mazda B3000 come from?

A: Fitment information is captured when the donor vehicle is dismantled. The yard decodes the VIN for 2003 Mazda B3000, checks OEM data and interchange databases, and verifies details during physical inspection. The resulting fitment is then assigned to the ECU/ECM assembly.

Q: What if there are multiple fitment options for my 2003 Mazda B3000?

A: Many 2003 Mazda B3000 vehicles were built with multiple configurations in the same year and trim. Trim name alone (XLT, Limited, Sport, etc.) is not enough. You must match the exact configuration shown in the fitment notes—such as engine size, transmission type, drivetrain, and axle ratio—before selecting a ECU/ECM.

Q: Where can I find my 2003 Mazda B3000 VIN??

A: You can find the VIN for your 2003 Mazda B3000 on the driver-side dashboard (visible through the windshield), inside the driver-side door jamb, and on your registration or insurance documents. The VIN helps confirm the correct configuration and fitment.

Q: Do trim levels affect fitment on my 2003 Mazda B3000?

A: Yes. Trim levels on your 2003 Mazda B3000 can affect electronics, sensors, body parts, and interior components. Always match the detailed fitment notes for your configuration, not just the trim name, before selecting a ECU/ECM.

Attention!

There are 49 Engine Computer choices for the 2003 Mazda B3000!!!

Engine Computer (-)

Electronic Control Module
- (Passenger Side rear firewall)
  - Excluding flex fuel vehicle
    - 4x2
      - Automatic Transmission
        ID 2L5F-AD (6/0)
        ID 2L5F-BD (1/0)
        ID 2U7A-DCA (0/0)
        ID 2U7A-DCB (0/0)
        ID 2U7A-DCC (0/0)
        ID 2U7A-DDA (0/0)
        ID 2U7A-DDB (0/0)
        ID 2U7A-DDC (0/0)
        ID 3L5A-GC (5/0)
        ID 3L5A-Dark Green (0/0)
        ID 3L5A-high compression (0/0)
        ID 3L5A-HD (0/0)
        ID 3L5A-HE (2/0)
        ID 3L5A-JB (0/0)
        ID 3L5A-JC (1/0)
        ID 3U7A-AUA (0/0)
        ID 3U7A-AUB (0/0)
        ID 3U7A-FFA (0/0)
        ID 3U7A-FHA (0/0)
      - Manual Transmission
        ID 2L5F-DD (0/0)
        ID 2U7A-DEA (0/0)
        ID 2U7A-DEB (0/0)
        ID 2U7A-DEC (0/0)
        ID 3L5A-LC (0/0)
        ID 3L5A-LD (0/0)
        ID 3L5A-MC (1/0)
        ID 3L5A-MD (0/0)
        ID 3L5A-ME (0/0)
        ID 3L5A-NB (0/0)
        ID 3L5A-NC (0/0)
        ID 3U7A-AVA (0/0)
        ID 3U7A-AVB (0/0)
        ID 3U7A-FGA (0/0)
        ID 3U7A-FJA (0/0)
    - 4x4
      - Automatic Transmission
        ID 2L5F-BD (1/0)
        ID 2U7A-DDA (0/0)
        ID 3L5A-high compression (0/0)
        ID 3L5A-HD (0/0)
        ID 3L5A-HE (2/0)
        ID 3U7A-FFA (0/0)
      - Manual Transmission
        ID 2L5F-Edition (0/0)
        ID 2U7A-DFA (0/0)
        ID 2U7A-DFB (0/0)
        ID 2U7A-DFC (0/0)
  - flex fuel vehicle (FFV)
    - ID 2L5A-CB (3/0)
    - ID 2L5A-CC (0/0)
    - ID 2L5A-CD (3/0)
    - ID 2L5A-CE (3/0)
    - ID 2U7A-FZA (0/0)

Select the right ECU/ECM for your 2003 Mazda B3000

Interchange Fitment FAQs

Q: How does interchange fitment work for my 2003 Mazda B3000 ECU/ECM?

Q: What is an interchange fitment option for my 2003 Mazda B3000?

Q: Why must every fitment detail match for my 2003 Mazda B3000?

Q: Where does the fitment information for my 2003 Mazda B3000 come from?

Q: What if there are multiple fitment options for my 2003 Mazda B3000?

Q: Where can I find my 2003 Mazda B3000 VIN??

Q: Do trim levels affect fitment on my 2003 Mazda B3000?

Attention!

Engine Computer (-)

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ELECTRICAL

EXTERIOR & BODY PARTS

FRONT/REAR LIGHTS

HEATING & COOLING

INTERIOR PARTS & ACCESSORIES

MECHANICAL & FRAME PARTS

Auto Parts Departments

Customer Service

Company Information

2003 Mazda B3000 Engine Computer

Select the right ECU/ECM for your 2003 Mazda B3000

Interchange Fitment FAQs

Attention!

Verify Your Part

Engine Computer (-)

Available Parts

Auto Parts Departments

Customer Service

Company Information