National 99248 Engine Crankshaft Repair Sleeve - Front

National 99248 Crankshaft Repair Sleeve

National 99248 is a stainless steel engine crankshaft repair sleeve for front applications on select Dodge Ram 2500 and Ram 3500 trucks, plus earlier D250, D350, W250, and W350 models. It is sized for a shaft diameter range of 2.500 to 2.506 inches and provides a precise repair surface where crankshaft wear has affected sealing performance.

Key Features

• Stainless steel construction for durable repair service
• Fits shaft sizes from 2.500 to 2.506 inches
• Overall width: 0.656 inch
• Width on shaft: 0.500 inch
• Installation depth: 1.375 inches
• Flanged outside diameter: 2.828 inches
• Engine crankshaft repair sleeve for front seal repair applications
• National 99248 cross-references Timken KWK99248 for the same application

Product Details

This National crankshaft repair sleeve restores a smooth sealing surface on a worn crankshaft journal so the front seal can seat properly again. The sleeve’s stainless steel construction and controlled dimensions help deliver a consistent repair surface for Dodge Ram 2500 and Ram 3500 front applications, as well as compatible D250, D350, W250, and W350 front fitments. National 99248 is built by a brand known for sealing solutions and engineering support across automotive applications.

Common Problems It Can Help Address

• Front crankshaft seal leakage caused by journal wear
• Grooves or scoring on the crankshaft sealing surface
• Repeat seal failure after prior repairs
• Oil seepage at the front of the engine
• Loss of sealing contact on worn crankshaft dimensions

Installation Notes and Tips

Measure the crankshaft journal before installation to confirm the shaft size falls within the 2.500 to 2.506 inch range. Clean the sealing surface thoroughly, align the sleeve carefully, and install it to the specified depth so the flange and width on shaft are positioned correctly. Verify front application fitment for your Dodge Ram 2500, Ram 3500, or listed D-series/W-series truck before assembly. Part number 99248 should be matched to the vehicle and seal repair dimensions during service.

Quality Assurance

National has supported the sealing market for more than 75 years and applies that experience to precision repair components like 99248. This part cross-references Timken KWK99248 for the same application.