O-NEX Xenon D1S D3S 35W HID Ballast OEM Direct Replacement - Plug

In this review of the O-NEX Xenon D1S D3S 35W HID Ballast the bottom line is simple: this is a budget-friendly, plug-and-play replacement ballast intended for owners who need a direct swap for a failed factory module. It is aimed at Ford and Lincoln models that use the OEM number 8A5Z13C170A, and its single biggest reason to buy is straightforward compatibility with those factory connectors when the original ballast has failed but the headlight assembly itself is dry and undamaged. The reviewer found it useful for quick repairs but warns to check connector and ballast appearance carefully before purchase.

Key Features

• Factory direct design: Built as a one-piece replacement unit to mimic the original ballast layout and connectors for an easier swap.
• Plug-and-play installation: Plugs into existing wiring harnesses on compatible Ford and Lincoln vehicles for a fast replacement without modification.
• Multiple OEM numbers supported: Sold as compatible with OEM numbers such as 8A5Z13C170A and AA3857300DG so buyers can match the part to their original unit.
• Vehicle compatibility: Intended for models including Ford Escape, Explorer, Edge, Flex, F150 and Lincoln MKT, MKX, MKS for straightforward selection if factory ballast matches.
• Compact 35W power rating: Matches the original 35W HID system specification to restore expected brightness when used with an otherwise healthy headlight.

Who It's For

This ballast is best for DIY mechanics and owners of compatible Ford or Lincoln vehicles who have a failed factory ballast but a dry, undamaged headlight housing. It works well when the original unit can be identified by the OEM number or by matching the connector and physical appearance shown in the product image.

Those who should look elsewhere include owners whose headlights have water ingress or corrosion, since the listing warns a replacement ballast will likely fail again if the headlight assembly is compromised. If you need a manufacturer-branded OEM part specifically, consider sourcing directly from an authorized dealer instead of an aftermarket replacement.

Pros & Cons

Pros

• Good value for money when the unit matches the factory ballast and the headlight is dry.
• Plug-and-play fit for many Ford and Lincoln models reduces installation time and complexity.
• Matches 35W HID power rating so it can restore original brightness levels.

Cons

• Mixed reports on long-term reliability and alignment mean some buyers experienced early failure or fitment mismatch.
• Not an OEM manufactured unit, so some users preferring factory-branded parts may find it unsuitable.

Specifications

Our Verdict

The O-NEX Xenon ballast is a practical, cost-effective replacement for owners who can confirm the factory ballast number and have an intact headlight assembly. It restores HID output at the correct 35W rating and saves time with plug-and-play connectors, but buyers should confirm the exact connector appearance and be aware that water-damaged housings will likely cause repeated failures.

Frequently Asked Questions

Will this ballast fit my vehicle?
Verify the OEM number on your factory ballast and that the connector matches the product image; it is compatible with listed Ford and Lincoln models when they match.

Is this an original equipment part?
No, it is an aftermarket replacement designed to be plug-and-play and direct replacement for the factory unit, not an OEM-manufactured module.

What causes ballast failure most often?
The most common cause noted is water in the headlight housing; if your headlight is wet, replace the assembly or fix the leak before fitting a new ballast.