ENA Ignition Coil Connector Wiring Harness Set of 4 — 4-Pin 5.9" Length, Color-Coded for Toyota/Scion/Lexus

If your engine is showing misfires, rough idle, or check-engine lights related to coil pack circuits, the connector harness — not always the coil itself — can be the weak link. ENA designed this 4-piece replacement kit as a plug-and-play restore for many 4-cylinder engines from 1999 onward, matching OEM pinouts and common reference numbers like S2527, 90919-02234, and 88974044. Each harness uses a 4-terminal female connector with color-coded wires and a standardized length for straightforward installation without splicing.

Will this harness fit my vehicle and engine?

Fitment covers a wide range of Toyota, Lexus and Scion models across multiple years and 4-cylinder displacements. Check the specific model and year lists below; using the vehicle fitment tool or your OEM reference number ensures correct selection. The kit is intended for engines that use 4-pin coil pack connectors.

• Compatible models include Corolla, Prius, RAV4, Tacoma, Camry, Highlander, Yaris, Matrix, CH-R, Avalon, 4Runner, Sienna and more.
• Lexus fitment examples: ES300h, NX300/300h, IS200t/IS300, GS200t/GS300 and CT200h.
• Support for Scion models such as tC, xB, xD, iM and iQ where 4-pin coil connectors are used.
• Cross-references: S2527, 88974044, 90980-11885, 90919-02240/02244.

How easy is installation and what tools are required?

ENA built the harness with a plug-and-play mentality: each connector mates to the coil pack using the original-style clip and terminals. Basic hand tools and typical engine-bay access are all you need; no cutting or rewiring is required when the connector matches your vehicle. Installation time is usually short, making it suitable for a quick DIY repair.

• Tools: small ratchet or wrench set, needle-nose pliers, basic hand tools for coil removal.
• Preparation: disconnect the battery and let the engine cool before starting.
• Procedure: remove coil pack, unplug old connector, attach ENA harness, re-install coil and test.
• Tip: label coil positions if replacing multiple to keep firing order correct.

What are the harness specifications and durability features?

The harnesses come in four distinct colors (red, green, blue, yellow) and provide a 4-terminal, 4-wire connection designed for 12V ignition systems. The harness length is about 5.9 inches, long enough for typical coil pack placement while minimizing exposed wiring. ENA includes standard female connector housings and OEM-style terminals for reliable contact and a secure latch.

• Connector gender: female with 4 terminals and 4 wires.
• Voltage: rated for standard 12V ignition circuitry.
• Length: approximately 5.9 inches (harness reach for coil packs).
• Packaging: set of 4 connectors plus 12-month warranty.

Who is this for? The ENA coil connector kit is aimed at DIY mechanics, fleet technicians, and independent shops that need a dependable replacement for damaged or corroded coil pack plugs. It's useful when coils test good but the plug shows heat damage, melting or intermittent contact; the kit is also a practical preventative upgrade during routine ignition servicing. Always verify compatibility using your vehicle year/model or OEM reference numbers before purchase to ensure a correct fit.