Bosch 3981 Engine Oil Filter

Bosch Premium Oil Filter 3981 Overview

The Bosch Premium Oil Filter 3981 is a cartridge-style engine oil filter built for select Lexus and Toyota applications. It uses cellulose paper filter media and a nitrile gasket to help keep dirt and harmful particles out of the oiling system, supporting cleaner oil flow and reduced engine wear.

Compatible with applications such as Lexus IS350, Lexus GX460, and Toyota 4Runner, this Bosch Premium Oil Filter 3981 is made to match OE-style fitment while focusing on dependable filtration for everyday driving and long service intervals.

Key Features

• Cartridge oil filter design for select Lexus and Toyota engines
• Cellulose paper filtering material for particle capture
• Nitrile gasket material for sealing support
• OE-style fitment for straightforward service replacement
• Additional accessories included as listed by the manufacturer
• Filter height: 3.22 in; outside diameter: 2.756 in

Product Details

Bosch Premium Oil Filters are engineered to help protect the engine by trapping contaminants before they circulate through critical internal components. The Bosch Premium Oil Filter 3981 uses cellulose paper media and a cartridge format to support consistent oil filtration in applications that call for this style of service part. For drivers maintaining Lexus IS250, Lexus LS460, or Toyota Tundra engines, this filter provides a practical OE-style replacement option focused on wear protection and engine cleanliness.

This part cross-references with Toyota/Lexus OE-style service applications for the same fitment family.

What It Helps Address

• Excess dirt and debris in engine oil
• Premature internal engine wear from contaminated oil
• Reduced filtration performance during routine oil service
• Oil system maintenance on Lexus and Toyota cartridge-filter engines
• Service replacement needs for vehicles using Bosch 3981

Installation Notes

Install the filter during a standard oil service and verify the cartridge housing is clean before assembly. Confirm the correct application by year, make, and model before installation, especially on Lexus GS350, Lexus RC350, and Toyota 4Runner vehicles. Follow the vehicle manufacturer’s oil service procedure and torque specifications for the filter housing and cap.

Quality Assurance

Bosch Premium Oil Filters are built to support engine protection through controlled filtration and OE-style fitment. The Bosch 3981 is designed for consistent service use in the listed Lexus and Toyota applications, with materials selected to help maintain oil cleanliness and engine wear protection.