The ATC 9083 Paccar MX-13 Injector Sleeve Remover and Installer Kit is a complete, precision service toolset engineered for heavy-duty diesel technicians performing injector sleeve service on Paccar MX-11 and MX-13 engines. This kit is a direct replacement for OEM tool 450-6331-00 and is designed to remove old stainless steel injector sleeves and install new ones with controlled alignment and minimal risk of head or sleeve damage (Head Off).
Injector sleeves (also called injector cups) seal the area around the injector bore in the cylinder head and must be replaced whenever they become worn, corroded, or leaky. Damage to sleeves or improper installation can lead to coolant leakage into the combustion chamber, poor compression, and engine misfire—a common failure mode seen on MX-Series engines when sleeve seal integrity is lost. Accurate removal and installation are essential to restore proper sealing and engine performance.
This head-off tool kit requires that the cylinder head be removed prior to service and includes the core components needed to clamp, extract, and drive the injector sleeves into position without scoring the head or sleeve bore. The kit’s robust design and correct fitment make it ideal for dealership service bays, engine overhaul facilities, fleet maintenance operations, and professional rebuild shops that work on Paccar powered vehicles such as Kenworth and Peterbilt equipped with MX-Series diesel engines.
Key Features & Benefits
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OEM replacement for Paccar tool 450-6331-00 — provides professional sleeve removal and installation.
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Engineered specifically for Paccar MX-13 (and compatible MX-11) diesel engines.
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Precision components clamp and remove old injector sleeves cleanly.
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Installer fixtures ensure new sleeves are seated squarely and at correct depth.
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Designed for head-off service, reducing the risk of damage compared to makeshift methods.
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Heavy-duty construction for repeated professional shop use.
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Speeds service time and improves reliability during injector retrofit or rebuilds.
Typical Applications
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Paccar MX-13 / MX-11 injector sleeve removal and installation
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Diesel engine cylinder head service
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Engine rebuilds, mid-life overhauls, and coolant leak repair
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Kenworth, Peterbilt, DAF, and other heavy truck platforms with MX engines
Why It’s Critical
Injector sleeves on MX-Series engines seal the injector bore to prevent coolant ingress and combustion gas leaks. If sleeves are corroded, loose, or improperly installed, it can lead to cross-contamination of coolant and fuel, reduced performance, and costly diagnosis. Using the correct removal/installer kit ensures sleeves are serviced without damaging the head, liner bores, or valve train components—protecting your rebuild investment and avoiding premature failures.