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Haltech

Haltech Nexus S2 Plug n Play Adapter Harness Kit for Mazda RX-7

$2,305.88

SKU: HT-212306

In Stock
In Stock
Ships by Nov 10
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Haltech Nexus S2 Plug n Play Adapter Harness Kit is an ECU upgrade designed for the Mazda RX7 FD S7 & 8 models from 1996-2002. This kit provides a direct replacement for the factory ECU, utilizing the original harness connectors for a straightforward installation. It offers enhanced performance and functionality over previous models like the Elite 1500, featuring a powerful Nexus platform processor. The harness kit includes the Nexus S2 ECU, an injection-molded plug 'n' play adapter harness, an M14 x 1.5 air temp sensor, and an auxiliary I/O 16 Pin Tyco plug. It is specifically for manual transmission vehicles and supports single turbo conversions only.
Show original supplier description
The Haltech Nexus S2 Plug n Play Adapter Harness Kit is an ECU upgrade designed for the Mazda RX7 FD S7 & 8 models from 1996-2002. This kit provides a direct replacement for the factory ECU, utilizing the original harness connectors for a straightforward installation. It offers enhanced performance and functionality over previous models like the Elite 1500, featuring a powerful Nexus platform processor. The harness kit includes the Nexus S2 ECU, an injection-molded plug 'n' play adapter harness, an M14 x 1.5 air temp sensor, and an auxiliary I/O 16 Pin Tyco plug. It is specifically for manual transmission vehicles and supports single turbo conversions only.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandHaltech
Part NumberHT-212306
CategoryIgnitions and Electrical

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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