
SPOOL B58 Gen 1 Plug and Play Motiv Reflex Plus Harness
Spool Performance B58 Gen 1 Plug-and-Play Reflex+ Install Harness
The Spool Performance Plug-and-Play Instal Harness is the ultimate solution for installing a Motiv Reflex+ on your B58 Gen 1 -powered vehicle—no cutting, splicing, or depinning required.
Why choose our harness over others?
What sets our kit apart is its modular design. Rather than replacing the entire Reflex flying lead harness, our plug-and-play solution connects directly to it. You simply swap out the sub-harness that typically comes standard and replace it with ours. That means no more posi-tap connectors and no pinning into the DME—just plug it in and go.
This also means significant cost savings, avoiding the need to spend over $600 on a full custom harness.
Only compatible with automatic transmission B58 Gen 1 on MHD and EcuTek.
No tune changes are required when swapping over from posi-tap to our PnP harness.
It will not work on BM3, please purchase MHD or EcuTek.
If you have a G-chassis Gen 1 B58, like BMW G30 540i or G01 X3 M40i, please purchase the G2 harness. This will NOT work.
Requirements and Compatibility:
- Does not include the MOTIV ReFlex
- Requires Standard ReFlex Main Harness
- Does not include a fuel lines or fuel line adapters
- Does not include a flex fuel sensor
- Wiring fitment is compatible with all known aftermarket intake manifolds and various port injection plates.
Note: This Harness replaces only the signal and power sub harness portion of the Motiv Reflex. Standard universal Motiv ReFlex Plus harness required for use of this Plug and Play Harness.
Pairs well with
Ships within 1-2 business days.
Free shipping & returns

SPOOL B58 Gen 1 Plug and Play Motiv Reflex Plus Harness
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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FAQs
Please read our FAQs page to find out more.
Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.


