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Ignitions and Electrical› Wiring Harnesses

Boomslang

Plug-and-Play Wiring Harness for Haltech Nexus S3 ECU

$960.00 $840.00 Save $120.00

SKU: BF29043-S3

In Stock
In Stock
Ships by Jul 30
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Boomslang BF29043-S3 is a plug-and-play wiring harness designed to connect aftermarket engine management systems to your vehicle's factory ECU. It acts as a pre-wired extension, eliminating the need to cut or splice factory wires. This harness is compatible with Haltech Nexus S3 ECUs and offers an easy installation and removal process. It saves time and prevents damage to the original wiring harness.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandBoomslang
Part NumberBF29043-S3
CategoryIgnitions and Electrical

Buy with Confidence

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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