Haltech
Haltech IO 12 Expander- 12 Channel (CAN ID - Box B)
Haltech IO 12 Expander- 12 Channel (CAN ID - Box B)
Part number: 09920
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- Tracking emailed when it ships
- Free fitment check before you order
IO 12 Expander- 12 Channel by Haltech. Many electrical faults are a bad connection rather than a failed part, so check grounds and connectors first.
Key features
- Combine two IO 12 Expanders with different CAN ID's (Box A or B) for up to 24 additional channels (subject to ECU compatibility)
Specifications
- Brand: Haltech
- Part type: Electrical part
- Includes: IO 12 Expander, Elite CAN cable DTM-4 to 8 pin Black Tyco - 300 mm (12")
Fitment
This listing does not name specific vehicles. Match the part number and the specifications with the part you are replacing.
What it does
Electrical parts carry power and signals around the car. Electrical faults often show up as warning lights, rough running or no-start problems, and the right replacement part clears the cause rather than the symptom.
Installation & tips
- Disconnect the battery before electrical work and check grounds first.
- Fuses and relays: Cheap to keep spares.
- Disconnect the battery before you unplug or splice any wiring, and test everything works before you refit trim panels.
FAQ
Is it sold individually or as a set?
The listing gives: IO 12 Expander, Elite CAN cable DTM-4 to 8 pin Black Tyco - 300 mm (12").
Can I install it myself?
Many owners do this job at home with basic tools and a service manual for their vehicle. If you are not sure, have it fitted by a qualified mechanic.
What should I check before ordering?
Compare the part number, specifications and fitment on this page with your vehicle and with the part you are replacing.
Before you order
- Measure the part you are replacing and compare it with the specifications above.

About this part
If you are replacing a worn part, compare it with the original before you install it.
Fitment notes
- Specs, lead time and warranty come from Haltech and can change. The details above this guide are the latest we have.
Not sure it fits? Message us your vehicle details and we'll double-check fitment before you buy.
Ask about fitmentParts that usually go with it
- Hardware. Old bolts and clips are often worth replacing.
More for your car: Engine
Questions about part
Will this fit my car?
How do I know it fits?
Where do specs and warranty details come from?
Questions & answers
No questions yet about this part. Ask about fitment, what's in the box or installation and we'll answer here.