OBD2A / OBD2B to OBD1 ECU Adapter Harness – Mil-Spec | VTI

OBD2A / OBD2B to OBD1 ECU Adapter Harness – Mil-Spec | VTI

Marsoni

M251S

$99.00

Get it in 3 business days with 1 day shipping. Friday, May 29

OBD2A / OBD2B to OBD1 ECU Adapter Harness – Mil-Spec | VTIOBD2A OBD2B to OBD1 ECU Adapter Harness Mil Spec VTI Not all adapters are created equal. VTI's OBD2A and OBD2B to OBD1 ECU adapter harnesses are designed, tested, and manufactured in house built to the same mil spec standards as our full engine harnesses. These are not cookie cutter eBay adapters. If you're running an OBD1 ECU conversion, Hondata S300, chipped P28 P72, or any professional motorsport build that demands reliable ECU connectivity this is

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So the quality of this not great, but good enough and they look nice enough on the wall. However, the bracket holes are not spaced at 16" intervals. WTF? I'm not sure who designed this thing. The molly plugs that came with it look OK, but to play it safe I used a cobalt steel drill bit and made my own holes in the bracket. Easy enough with some wd40. My other pick with this is that the screws to anchor the shelf to the bracket are black and and very obvious... they should have supplied some kind of cap.

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Reviewed in the United States on January 31, 2026