Aisin OPT-120 Engine Oil Pump

Engine Oil Pump Overview

The Aisin OPT-120 engine oil pump is an OE-manufactured replacement built for the lubrication demands of the engine. Its aluminum die-cast construction helps reduce size and weight while maintaining performance.

Compatible with Toyota Corolla applications listed below, this oil pump is a direct-fit service part for restoring proper oil circulation. The OPT-120 part number is also useful when verifying the correct replacement against existing service information.

Key Features

• OE-manufactured replacement for factory-style fit and function
• Aluminum die-cast construction for reduced size and weight
• Engine oil pump for maintaining internal engine lubrication
• Fits Toyota Corolla applications from 2014 through 2018
• Part number OPT-120 for easy identification

Detailed Description

The Aisin OPT-120 is an engine oil pump engineered as an OE-manufactured replacement for the Toyota Corolla. It uses aluminum die-cast construction to reduce mass and package size without sacrificing performance, making it a practical choice when replacing a worn or failing pump. The OPT-120 part number appears on service references and interchange data, including 15100-0T050, 15100-37020, and 15100-37021.

Fits 2014-2018 Toyota Corolla, N/A.

What It Is Used For

• Restoring oil pressure when the original pump is worn
• Addressing low lubrication flow caused by pump wear or damage
• Replacing a noisy or inefficient oil pump assembly
• Supporting proper engine lubrication in service repairs

Installation Notes and Tips

Verify the part number OPT-120 against the removed component and service catalog before installation. Confirm the application details for the Toyota Corolla listed in the fitment data and inspect related sealing surfaces and engine components during service.

Quality Assurance

Aisin supplies OE-manufactured components, and this pump follows that factory-style manufacturing approach for the listed applications.