General Motors GM-50611 Isuzu Front Crankshaft Seal Installer
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The GM‑50611 (Kent‑Moore EN‑50611) Front Crankshaft Seal Installer is an OEM‑spec service tool designed for installing front crankshaft seals on 2011 and newer Isuzu 4JJ1 3.0L diesel engines.
These engines require the seal to be installed into the front cover over the crankshaft snout, making precise alignment essential.
The installer pilots over the crankshaft and uses a center forcing screw that threads into the crankshaft end. As the screw is tightened, it draws the installer body evenly against the seal, pressing it squarely into the front cover without distortion or damage. This ensures factory-correct seal depth and prevents premature leaks.
Applications: Mechanical Engine – 3.0L (4JJ1) • 3500 Medium Duty (2017) • 3500HD Medium Duty (2016) • 4500 Medium Duty (2017)
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