No.B9120 – ISUZU NPR (4.8L / 5.2L) Crankshaft Rear Seal Wear Ring / Slinger Installer

The B9120 ISUZU Rear Crankshaft Slinger & Wear Ring Installer is a heavy-duty precision service tool engineered specifically for the accurate, damage-free press-installation of the rear crankshaft oil slinger / wear ring on Isuzu medium-duty commercial diesel engines. Designed to match factory OEM workshop procedures, this tool ensures the rear slinger is pressed squarely and seated to the exact manufacturer depth, preventing oil seal failure, distortion, and premature rear engine oil leaks.

Key Product Features

• Precise Slinger / Wear Ring Press Fit: Designed specifically to press the rear crankshaft oil slinger into position evenly without distorting the ring or scoring the crankshaft journal.

• OEM-Equivalent Tooling: Built to match the exact form, fit, and function of factory original tool OEM J-43282-RR.

• Engineered Alignment: Uses a dedicated guide adapter, sleeve, washer, and center-bolt assembly to ensure a square press and positive stop at the correct factory depth.

• Heavy-Duty Commercial Grade: Manufactured from high-strength carbon steel with a durable anti-corrosion finish to withstand high pressing forces in fleet and workshop environments.

Usage & Installation Guide

1. Initial Setup: Position the oil slinger onto the crankshaft flange using the appropriate guide adapter.

2. Press Assembly: Place the installer sleeve over the adapter, install the supplied washer onto the center bolt, and thread it into the crankshaft.

3. Press Operation: Tighten the center bolt steadily until the sleeve makes full contact with the adapter, ensuring the rear slinger is pressed squarely to its positive factory stop.

Specifications & Applications

• OEM Tool Reference: J-43282-RR

• Applicable Engines:

  • Isuzu 4HE1: 4.8-Litre Turbo Diesel

  • Isuzu 4HK1: 5.2-Litre Turbo Diesel

• Vehicle Compatibility: Isuzu NPR, NQR, NRR, and GMC / Chevrolet W-Series (W3500, W4500, W5500) Medium-Duty Commercial Trucks