Caterpillar 3126 3126B C7 C9 Cat Fuel Injector Sleeve Nozzle-Cup-Sleeve-Tube In-Vehicle Remover & Installer Tool Set Alt.

Caterpillar 3126 3126B C7 C9 Cat Fuel Injector Sleeve Nozzle-Cup-Sleeve-Tube In-Vehicle Remover & Installer Tool Set Alt.

This professional tool set is designed for in‑vehicle removal and installation of fuel injector sleeves (cups) on Caterpillar 3126, 3126B, C7, and C9 engines, as well as 7.3L Powerstroke applications that use similar cup designs.

✔ Compatible Injector Cups

Works with the following cup part numbers:

• 227‑1200
• 227‑2911
• 229‑1490
• F4TZ‑9F538‑A

Included Tools:

• 7.3L Powerstroke / 3126 / 3126B / C7 / C9 Injector Sleeve Cup Remover (Alternative)
• 221‑9777 Injector Nozzle–Cup–Sleeve–Tube Installer (Alternative)
• Replacement Tap EM501611 — 1‑11‑1/2 Dia, 4‑Flute HSS Bright Taper Pipe Tap
• 3126 Injector Sleeve Cup Installer — In‑Vehicle (Alternative)
• 303‑D109 / ZTSE4303 Diesel Injector Cup Installer — In‑Vehicle (Alternative)
• 8 × 9688K231 Injector Cup Sleeve Plugs
• 6 × Rubber Cup Plugs for C7 / 3126 / 3126B injector cups 227‑1200 & 227‑2911

⚠ Important Compatibility Notice

This tool set will NOT work on engines equipped with MEUI (Mechanical Electronic Unit Injection) systems.

Many users confuse MEUI with HEUI because MEUI injectors also have wires. Here’s the key difference:

• If your injectors are actuated by a rocker arm and pushrod, you have MEUI, not HEUI.
• For MEUI engines, you need the tool set 143‑2099‑MUI‑R instead.

The tap is considered a wear item with no warranty.

For the Caterpillar Tools Catalog, click here

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