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Haltech Nexus S3 ECUs with Plug-and-Play Harness
Not Yet Reviewed
If you are using a factory harness and are after an easy ECU upgrade, Haltech Nexus S3 ECUs with a plug-and-play adapter harness are excellent choices. They plug directly into the ECU and have a set of factory connectors on the other side which plug straight into the factory har
If you are using a factory harness and are after an easy ECU upgrade, Haltech Nexus S3 ECUs with a plug-and-play adapter harness are excellent choices. They plug directly into the ECU and have a set of factory connectors on the other side which plug straight into the factory harness, allowing you to be up and running in just a few hours. The included quick-start guide will walk you through installation of the adapter harness into your vehicle. Select the Haltech S3 ECU and harness kit designed for your vehicle.
Kits include:
* Nexus S3 ECU
* Injection molded plastic plug-and-play adaptor harness
* M14 x 1.5 air temp sensor with matching plug and pins
* Auxiliary I/O 16-pin Tyco plug and pins
Engine Management Systems, Nexus S3, ECU with Plug'n'Play Harness, Mazda RX-7, FD S6, Kit
Part Number: HTH-HT-213307
Not Yet Reviewed
Estimated Ship Date: Jan 27, 2026 if ordered today
Estimated Ship Date: Jan 27, 2026 if ordered today
Engine Management Systems, Nexus S3, ECU with Plug'n'Play Harness, Mazda RX-7, FD S7/8, Kit
Part Number: HTH-HT-213306
Not Yet Reviewed
Estimated Ship Date: Feb 10, 2026 if ordered today
Estimated Ship Date: Feb 10, 2026 if ordered today
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