Camoo Cummins B‑Series Crankshaft Seal & Wear Sleeve Installer Kit — 3.9L/5.9L/6.7L Heavy‑Duty Steel, OEM‑Sized Drivers

Camoo's 1338 front cover crankshaft seal installer and 5046 wear sleeve tool kit installs Cummins B‑Series crank seals and wear sleeves straight, square, and leak-resistant.

This heavy‑duty steel kit is built for technicians and diesel enthusiasts working on Cummins B‑Series engines (3.9L, 5.9L and 6.7L) and compatible Paccar PX‑6 applications. It replaces ad‑hoc improvised presses and hammer blows with machined drivers sized for OEM seals 3937111, 3904353 and the 3802820 seal + wear sleeve assembly, reducing the risk of misalignment and premature seal failure.

How does this kit ensure a proper crankshaft seal fit?

The tools are precision machined to match OEM seating diameters so the seal is pressed evenly into the front cover. Controlled, even installation lowers the chance of lip distortion or offset seating that leads to leaks. Using the correct driver also protects the seal’s inner lip and the crankshaft surface during installation.

• Machined steel drivers sized to OEM seal dimensions for accurate seating
• Even axial force prevents seal lip deformation and misalignment
• Reduces need for makeshift tools that can damage components

Can this tool kit install both seals and wear sleeves on Cummins B‑Series engines?

Yes — the Camoo kit includes drivers designed for front cover crank seals and the associated wear sleeves used on 3.9L, 5.9L and 6.7L Cummins engines. It supports the specific seal part numbers listed by OEMs and replaces several legacy installer part numbers. This makes the kit versatile across multiple model years and related Paccar engines.

• Fits 1989–current Cummins 4BT, B‑Series, ISB and QSB variants
• Compatible with seal numbers 3937111, 3904353, and 3802820 kits
• Alternative to OEM installers such as 3824498 (1338) and 3824500 (5046)

What materials and build quality can I expect from the Camoo installer set?

Camoo manufactures these tools from heavy‑duty steel and machines each piece to tight tolerances to replicate OEM dimensions. The robust construction stands up to shop use and repeated installations while maintaining concentricity and dimension. A dependable build helps ensure consistent press‑in results and longer tool life.

• High‑strength steel construction for durability under repeated use
• Precision machining and measured tolerances for OEM conformity
• Designed to avoid deformation of seals or sleeves during installation

How does using the kit affect repair time and leak prevention?

Using the correct drivers speeds the mechanical portion of a seal or sleeve replacement by eliminating guesswork and rework from misaligned installations. Proper installation the first time reduces follow‑up repairs and associated downtime, and helps preserve the crankshaft sealing surface and new seal integrity. For shops, fewer comebacks means better efficiency and customer satisfaction.

• Simplifies press‑in tasks to shorten labor time
• Reduces risk of premature leaks and repeat repairs
• Delivers consistent installation quality across multiple engines

Who is this for: The Camoo 1338 & 5046 installer kit is intended for professional diesel mechanics, fleet maintenance shops, and experienced DIY diesel owners who service Cummins 3.9L, 5.9L and 6.7L engines or Paccar PX‑6 vehicles. It’s for anyone who wants a repeatable, OEM‑sized method to press in crank seals and wear sleeves without risking damage from improvised tools. Camoo backs the kit with a 30‑day return policy and a 12‑month warranty for added confidence in purchase.