Camoo Cummins B-Series Front Crank Seal & Wear Sleeve Installer Kit — 1338/5046 Two-Piece Steel Tools for 3.9L, 5.9L, 6.7L Engines

Camoo's 1338 front crank seal installer and 5046 wear sleeve installer are purpose-built tools that correctly press Cummins B-series crankshaft seals and wear sleeves for a leak-free fit.

If you service 3.9L, 5.9L or 6.7L Cummins engines, this two-piece Camoo kit streamlines installing seal numbers 3937111, 3904353 and the combined seal/wear sleeve kit 3802820. Both tools are machined from heat-treated steel to OEM diameters so seals and sleeves seat squarely and uniformly—reducing the risk of premature failures caused by uneven installation. The set replaces factory-style tools such as 3824498 (1338) and 3824500 (5046) and fits a broad range of engines used in trucks and industrial equipment from 1989 to present.

How does this Camoo kit ensure a correct crank seal installation?

Each installer is sized to match the crankshaft housing and seal outer diameter so the seal slides on straight and compresses evenly. That even pressure prevents distortion and maintains the radial seal profile Camoo engineered the tool for repeatable results.

• Precise OEM-compatible diameters for accurate seating
• Steel construction to avoid deformation under press fit
• Guided alignment surfaces to prevent cocking of the seal
• Works with specified seal part numbers 3937111 and 3904353

Will the wear sleeve installer help with the combined seal and sleeve kits?

The 5046 wear sleeve installer is made to press in the sleeve portion of kits such as 3802820 without damaging the sealing surface. It distributes installation force across the sleeve so the inner diameter remains concentric with the crankshaft journal.

• Evenly applies force around the sleeve circumference
• Prevents marring of the sealing contact area
• Simplifies installation when replacing both sleeve and seal together
• Reduces rework risk from improperly seated sleeves

Which Cummins engines and years is this toolset compatible with?

This Camoo kit fits common Cummins B-series platforms and select Paccar models made from 1989 onward. It covers the 3.9L 4BT, 5.9L B-series and ISB/QSB 5.9L and 6.7L families used in trucks, vans and industrial applications.

• Compatible with Cummins 3.9L, 5.9L, 6.7L engines
• Fits Paccar PX-6 and legacy 4BT/ISB/QSB engines
• Applies to vehicles built 1989–current where listed seals are used
• Designed for technicians replacing seals 3937111, 3904353 or kit 3802820

Who is this for? Professional mechanics, fleet maintenance shops and experienced DIYers who perform crankshaft seal or wear sleeve replacements on Cummins B-series engines will benefit most from this Camoo installer set. If you need a repeatable, OEM-dimensioned tool to avoid leaks caused by uneven seating, this kit reduces installation guesswork and speeds up repairs. Camoo backs the set with a 30-day satisfaction promise and a 12-month warranty, making it a practical addition to any service bench handling Cummins seal work.