Combo Large Brush-Upper bore/face-Volvo D13/Mack MP8

This combo large brush is engineered for cleaning the upper bore and face area of the injector sleeve location on Volvo D13 and Mack MP8 cylinder heads. It is used as part of the Irontite Volvo D13 / Mack MP8 Injector Sleeve Professional Kit (PN 451‑6681‑00) to remove carbon, scale, and deposits from the injector bore and sealing surface prior to counterboring and installing a new stainless steel injector sleeve (PN 419‑6681‑05).

Combo Large Brush – Upper Bore/Face – Volvo D13 / Mack MP8

This combo large brush is a purpose-built cleaning tool for Volvo D13 and Mack MP8 cylinder heads. It is specifically designed to clean both the upper injector bore and the sealing face area where the injector sleeve and head casting must mate cleanly.

Proper cleaning of this area is a critical first step in the injector sleeve replacement process, helping ensure accurate machining and a reliable seal when a new stainless steel sleeve is installed.

Designed for Volvo D13 & Mack MP8 Injector Bores

• Sized to fit the upper injector bore area used on Volvo D13 engines
• Sized to fit the same area on Mack MP8 cylinder heads
• Brush configuration allows contact with both the bore wall and seat/face area

Unlike generic brushes, this combo design targets the specific geometry of the D13/MP8 injector bore and sealing surface, improving cleaning efficiency and consistency.

Role in the Injector Sleeve Service Procedure

In Irontite’s Injector Sleeve Removal & Installation Manual, this brush is used early in the Sleeve Installation process:

1. After the old sleeve is removed and any loose debris is cleared, the combo large brush is used to scrub the injector sleeve bore and face.
2. The brush removes carbon deposits, rust, scale, and residue that would interfere with:
   • Cutting accuracy when using the End Facing Counter Bore Cutter (PN 445‑6683‑30) with Counter Bore Pilot (PN 416‑6158‑62) and Guide Bushing (PN 416‑6158‑32)
   • Proper bonding and sealing when installing the new stainless injector sleeve PN 419‑6681‑05 with Permatex 64000 High Heat Sleeve Retainer (PN 468‑9640‑00)

Starting with a clean bore and face area allows the cutter to remove only the minimum necessary metal (typically 0.002”–0.005”) to restore a smooth, flat seat for the new sleeve.

Benefits of Using the Correct Brush

Using this dedicated combo bore/face brush helps:

• Improve machining accuracy: Cleaner surfaces allow the counterbore cutter to follow true metal, not carbon or debris.
• Enhance sealing reliability: Reduces contamination that could interfere with the sleeve retainer or O‑ring sealing surfaces.
• Extend tool life: Removing abrasive deposits before cutting reduces wear on the counterbore cutter and pilot.
• Speed up the process: A brush sized correctly for the bore cleans faster and more thoroughly than generic shop brushes.

Part of the Volvo D13 / Mack MP8 Professional Kit

This combo large brush is included in the Irontite Volvo D13 / Mack MP8 Injector Sleeve Professional Kit (PN 451‑6681‑00) alongside:

• Sleeve Removal Tool (PN 445‑6682‑10)
• Tip Expander and Tip Expander Driver (PNs 445‑6681‑21 & 445‑6681‑25)
• End Facing Counter Bore Cutter (PN 445‑6683‑30) with Pilot and Guide Bushing (PNs 416‑6158‑62 & 416‑6158‑32)
• Small Tip Bore Brush (PN 450‑6951‑08) for cleaning the lower tip area
• Driving Arbor, EA Lube (PN 468‑9910‑08), Permatex 64000 Sleeve Retainer (PN 468‑9640‑00), Permatex Anti‑Seize (PN 468‑9771‑34), toolbox, and instructions

Shops can purchase this brush individually as a replacement consumable for existing kits or to upgrade generic cleaning tools to a Volvo/Mack‑specific solution.

Ideal Users

• Diesel engine rebuilders and machine shops
• Heavy‑duty truck service facilities
• Fleet maintenance departments working on Volvo D13 / Mack MP8 heads

Any shop performing injector sleeve replacement or head reconditioning on these engines will benefit from having the correct bore/face cleaning brush on hand.

Key Features

• Application-specific combo brush for upper bore and face cleaning on Volvo D13 / Mack MP8 cylinder heads
• Removes carbon and residue prior to counterboring and sleeve installation
• Helps ensure accurate machining and proper sealing of new injector sleeves
• Designed for repeated use in professional shop environments
• Included in Irontite’s Volvo D13 / Mack MP8 Injector Sleeve Professional Kit (PN 451‑6681‑00)