

Haltech HT-186337 is a plug 'n' play adapter harness that connects a Haltech Nexus S2 or Nexus S3 ECU to the factory wiring of the 2001-2005 Mazda Miata (NB) with a manual transmission, in place of the factory ECU. It is the harness only; the Nexus S2 or S3 ECU is not included. Haltech lists it for VCT, non-VCT and factory-turbo cars with the 3-plug, 3-row factory ECU.
Fitment: 2001-2005 Mazda Miata (NB), manual transmission only. Haltech lists the US application as 01-05, covering VCT, non-VCT and USDM Special Edition (factory turbo) cars with the 3-plug, 3-row factory ECU. Not for automatic-transmission cars. Haltech does not list 1999-2000 US cars for this harness, and its harness for the NA is a different part (HT-186336).
Part number: Haltech HT-186337
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2005 | Mazda | Miata | Manual Transmission |
Garage 56 believes so strongly in the products we sell that every item comes with a full 365-day replacement gurantee - regardless of the manufacturer warranty timeline.
In-stock orders placed before 1pm EST ship same day. All qualifying orders of $56 or more ship free. Flat-rate and expedited shipping options are available at checkout.
Items marked as "Special Order" are available for shipment direct from the manufacturer - also known as "drop shipping". In most instances we are able to ship directly to you however, in limited circumstances we will need to order the item into our warehouse before we are able to dispatch to you. In all cases, your form of payment will not be finalized until we confirm availability of all Special Order items - place your order with confidence!
