Bolaxin Diesel Injector Sleeve & Cup Seat Brush Kit — Stainless Steel Bristles, ABS Handle for Powerstroke/Cummins/Duramax

Bolaxin's injector sleeve and cup seat brush kit quickly and safely removes carbon, rust, and debris to restore injector seating without harming bore surfaces.

If you service diesel injectors or rebuild heads, keeping injector bores and cup seats clean is essential for reliable sealing and consistent performance. This compact kit pairs a spiral tube brush with a flat-bottom brush built from corrosion-resistant stainless steel and a comfortable ABS handle, engineered for repeated use on Ford Powerstroke, Caterpillar, Navistar, MaxxForce, GM/Chevrolet, Dodge Cummins, John Deere and Isuzu diesel engines.

How does this kit improve injector seating and sealing?

By removing hardened carbon, rust and grime from the injector cup and bore, the brushes recreate a smooth, contaminant-free surface so the injector can sit and seal correctly. Clean seats reduce the chance of leaks and uneven spray patterns caused by poor seating.

• Spiral tube brush scrubs inside the injector sleeve bore for thorough cleaning.
• Flat-bottom brush cleans the cup seat face without gouging the metal.
• Stainless steel bristles resist corrosion for consistent brushing action.
• Ergonomic ABS handle provides steady control to avoid angled contact.

Which engines and injector types are supported by this brush set?

The kit is designed to fit a wide range of popular diesel systems, covering many Ford Powerstroke generations, Caterpillar in-line engines, Navistar models, MaxxForce families, GM/Chevrolet Duramax, Dodge Cummins, John Deere HPCR and Isuzu HPCR units. It targets common sleeve and cup geometries used in these applications.

• Ford 4.5L LCF, 6.0L, 6.4L, 6.7L and 7.3L Powerstroke models.
• Caterpillar 3126, C7, C9 and other inline engines.
• Navistar T444E, DT466, VT365, VT275, MaxxForce 5/7/DT/9/10/N9/N10.
• GM/Chevrolet 6.6L, Dodge Cummins 5.9L and 6.7L, John Deere and Isuzu HPCR engines.

What materials and design features ensure durability and safe cleaning?

The brushes use premium wear-resistant stainless steel for bristles and a firm ABS plastic handle to withstand repeated shop use without rusting or breaking. The combination of spiral and flat-bottom profiles lets you tackle both the bore interior and the flat seat face while minimizing risk of scoring or deforming mating surfaces.

• High-strength stainless steel bristles resist corrosion and retain stiffness.
• ABS handle gives grip and control, reducing slippage during use.
• Spiral profile reaches deep inside sleeves; flat brush polishes the seat face.
• Non-aggressive geometry cleans without cutting into the metal finish.

How should I use and maintain the brushes for best results?

Work with the engine cold and the injectors removed when possible. Use light, controlled strokes to break loose deposits and periodically wipe or rinse the bristles to avoid dragging debris back into the bore. After cleaning, inspect seats for flatness and residue before reassembly.

• Remove injectors and any loose debris before brushing.
• Apply solvent or cleaner safe for aluminum/steel to help dissolve carbon.
• Rinse and dry brushes after use; store dry to prevent contamination.
• Check for wear on brushes and replace when bristles deform or corrode.

Who is this for: This Bolaxin brush kit is built for professional mechanics, diesel technicians, and experienced DIYers who service injectors or perform head work on medium- and heavy-duty diesel engines. If you regularly remove or replace injectors across Ford Powerstroke, Caterpillar, Navistar, MaxxForce, GM, Cummins, John Deere or Isuzu platforms, this compact, durable set gives a reliable way to clean injector bores and seats without specialized tooling.

Note: Always follow manufacturer service procedures for your engine. This kit helps clean seats and bores but does not replace precision inspection, machining, or OEM-specified components where required.