IWISS iCrimp Spark Plug Wire Crimper — Ratchet 2-in-1 Stripper & Crimper for 7.0–8.5mm Ignition Cables, Black Oxide Jaws

The IWISS iCrimp Spark Plug Wire Crimper is a ratcheting 2‑in‑1 tool that strips and crimps ignition wires and terminals sized for 7.0–8.5mm spark plug cables.

Built for mechanics, racers and home DIYers who make or repair ignition leads, this compact hand tool combines a corrosion‑resistant jaw, a ratchet closure that ensures consistent crimps and an integrated wire stripper. It handles thicker spark plug wires commonly used in performance and aftermarket ignition systems and reduces repetitive hand strain through an ergonomic PP+TPR handle. The iCrimp delivers repeatable results for terminating boots and terminals on custom spark plug wires.

How does the ratchet mechanism improve crimp quality?

The ratchet locks the tool closed until the preset compression is complete, producing uniform crimps every use and eliminating under‑ or over‑crimping. It automatically releases only after full compression, so each terminal gets the same force and seating. This repeatability is important when building multiple ignition leads for consistent electrical contact and mechanical retention.

• Ratcheting release after full compression for consistent crimps
• Prevents incomplete crimps that can cause loose terminals
• Delivers even pressure across the terminal barrel

What wire sizes and types can this tool handle?

The iCrimp is sized for relatively large ignition cables, effective for wires in the 7.0–8.5mm diameter range commonly used for spark plug boots and high‑performance leads. It is designed to work with a variety of spark plug terminal types and cable constructions you’ll find in aftermarket and race applications. For very thin signal wires or smaller automotive connectors, a smaller specialty tool would be more appropriate.

• Capacity: accepts spark plug wires from 7.0 to 8.5mm diameter
• Compatible with many ignition terminals and boots
• Suited for aftermarket and performance ignition cables

How does the tool’s finish and materials affect durability?

The jaws are polished and treated with a black oxide finish to resist rust and corrosion from shop environments. Hardened metal jaws maintain shape under repeated crimps while the ergonomic two‑component PP+TPR handles improve grip and reduce hand fatigue during extended use. Together, these features extend the tool’s working life and reliability in demanding settings.

• Black oxide finish helps prevent corrosion
• Polished jaws for smooth terminal seating and less wear
• PP+TPR slip‑resistant handles for comfort and control

What functions does the 2‑in‑1 design provide?

The iCrimp combines stripping and crimping in a single handheld tool, so you can prepare and terminate ignition wires without switching tools. The integrated stripper removes insulation cleanly while the crimping section forms the terminal barrel to the conductor. This saves time in repetitive builds and keeps workspace clutter to a minimum.

• Integrated stripping jaws tailored for ignition wire insulation
• Crimping die sized for spark plug terminals and boots
• One tool for prepping and finishing ignition leads

Who is this for: The IWISS iCrimp is aimed at racers, performance shops, and automotive DIYers who fabricate or service spark plug wires and need a reliable, repeatable tool for larger diameter ignition cables. It’s also useful for hobbyists building custom ignition harnesses, offering corrosion resistance, consistent crimps and a comfortable grip for frequent use.