Weatherpak to GT MAP Adapter Harness
Type: MAP Sensor

These two new MAP sensor adapters from Holley EFI allow you to quickly add a stainless steel MAP sensor to your existing installation. Holley part #558-466 adapts harnesses with a (MPFI) Weatherpack 3-pin connector to the 3-pin Delphi GT connector, commonly found on aftermarket stainless steel MAP sensors, such as the Holley 5-BAR MAP sensor, part #554-108. Holley part # 558-467 adapts harnesses with a Delphi M/P 150 3-pin connector, commonly found on LS engine harnesses, to the 3-pin Delphi GT connector
Features:
- Genuine OEM connectors
- Retains your factory harness connector
- Techflex F6 loomed harness provides protection from engine bay dirt and grime, while matching your Holley EFI harness for a clean installation
- Plug and play pre-termination allows you to quickly convert any installation to an aftermarket MAP sensor
Specs:
- Brand: Holley EFI
- Category: Emission Control
- Emission Code: 3
- Grade Type: Performance
- Part Type: Manifold Absolute Pressure Sensor Adapter
- Product Type: MAP Sensor
- Sub Category: Hardware, Fasteners and Fittings
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Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.
Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.




