National 710188 Engine Crankshaft Seal - Rear

Engine Crankshaft Seal Overview

National 710188 is an engine crankshaft seal built for rear applications on select Toyota vehicles. It uses a fluoro-elastomer sealing material and a counter-clockwise spiral lip design to help maintain a consistent seal at the crankshaft.

This seal is a fitment-based replacement for Toyota Tacoma, Toyota 4Runner, Toyota T100, and Toyota Previa applications. The 710188 part number is also useful when matching an OE-style oil seal by size and design.

Key Features

• Fluoro-elastomer construction for sealing performance in engine environments.
• Counter-clockwise spiral lip design for controlled sealing action.
• Metric dimensions for accurate housing and shaft matching.
• National 710188 oil seal specification for direct part identification.

Detailed Description

National 710188 is an oil seal engineered around precise dimensional requirements, including an 88.000 mm shaft size, 106.000 mm housing bore, and 8.500 mm width. Those measurements matter when replacing a crankshaft seal, since proper fit depends on matching the seal to the housing and shaft dimensions used in the engine assembly. The fluoro-elastomer material adds resistance suited to sealing service, while the spiral lip profile supports stable contact at the sealing surface.

Fits 1995-2008 Toyota Tacoma, rear. Fits 1996-2000 Toyota 4Runner, rear. Fits 1994-1998 Toyota T100, rear. Fits 1991-1997 Toyota Previa, rear. This part cross-references Four Seasons (e.g., 35120) for the same application.

What It Is Used For

• Replacing a worn crankshaft seal that allows engine oil seepage.
• Restoring sealing at the rear of the crankshaft assembly.
• Addressing oil leaks caused by hardened or damaged seal material.
• Correcting seepage related to improper sealing contact at the shaft.

Installation Notes and Tips

Verify shaft, housing bore, and width measurements before installation. Clean the sealing surface thoroughly and inspect the crankshaft for wear, scoring, or contamination that could affect seal life. Confirm rear application and part number 710188 before ordering or installation.

Quality Assurance

National has supplied sealing solutions for more than 75 years and continues to develop designs for modern vehicle service needs. The 710188 seal reflects that focus on dimensional accuracy and sealing material selection.