Installing new injectors into a dirty bore is the fastest way to trigger a comeback. The ATC-50137 kit provides the precision copper-bristle solution for Powerstroke 7.3L, CAT 3126/C7, and MaxxForce engines.

Carbon: The Silent Killer of New Injectors

When you pull an injector from a Caterpillar C7 or a Navistar DT466, you aren't just leaving an empty hole—you're leaving behind a cocktail of carbon soot, baked-on oil, and copper washer residue. If this debris isn't scrubbed away, your new injector won't seat.

• Improper Seating – Even a microscopic layer of carbon can prevent the copper crush washer from sealing, leading to compression blow-by.
• Fuel Gallery Contamination – Debris falling into the fuel gallery can clog the nozzle of your brand-new (and expensive) injector.
• The Copper Advantage – The ATC-50137 uses heavy-duty copper bristles. Why? Because steel brushes can score the precision-machined bore, creating permanent leak paths.
• Universal Heavy-Duty Coverage – One kit covers the most popular workhorses: Ford 7.3L, CAT 3126/C7/C9, and the entire MaxxForce DT line.
• Reduced Rework — Cleaning the bore adds 5 minutes to the job but saves 5 hours of troubleshooting a "mystery" misfire later.

What’s in the ATC-50137 Kit?

The ATC-50137 Bore Brush Kit is a specialized assortment of brushes tailored to the varying diameters of the injector nozzle area and the upper sealing bore. These are "shop-grade" tools designed to be driven manually or by a low-speed drill.

Massive Engine Compatibility

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