Motorad MO348 Engine Oil Filter Cap

Engine Oil Filter Cap Overview

The MotoRad MO348 engine oil filter cap is a specific-fit replacement for select Mercedes-Benz applications. It is built from OEM-approved plastic and uses a screw-on attachment with an integrated rubber seal for dependable service in demanding engine conditions.

Compatible with Mercedes-Benz models including C-Class, E-Class, ML-Class, GL-Class, and SLK-Class applications, this cap is made to match the original design and sealing requirements. The MO348 part number is used for a direct replacement approach where the original cap must maintain proper fit and sealing.

Key Features

• Specific-fit engine oil filter cap for select Mercedes-Benz applications
• OEM-approved plastic construction for standard replacement use
• Screw-on attachment for secure installation
• Integrated rubber gasket or seal included
• Black round cap with indicator markings
• Manufactured to meet or exceed OEM quality standards

Detailed Description

The MotoRad MO348 is an engine oil filter cap engineered for vehicles that require a precise replacement cap with the correct thread diameter, sealing surface, and overall dimensions. Its round black design, screw-on attachment, and built-in seal support proper closure of the oil filter housing. This part number is commonly selected for Mercedes-Benz service work where the original cap has worn threads, damaged sealing surfaces, or cracked plastic. The MO348 is also cross-referenced with Dorman OE Solutions 921-178 and Genuine 2721800038 for the same application.

Fits 2006-2011 Mercedes-Benz C350, N/A. Fits 2006-2009 Mercedes-Benz C230, N/A. Fits 2008-2013 Mercedes-Benz GL550, N/A. Fits 2007-2012 Mercedes-Benz E350, N/A. Fits 2010-2015 Mercedes-Benz GLK300, N/A. Fits 2016-2018 Mercedes-Benz S400L, N/A.

What It Helps Address

• Cracked or damaged oil filter cap housing
• Worn threads that prevent proper tightening
• Oil seepage at the filter cap seal
• Incorrect cap fit on service replacement jobs
• Loss of indicator visibility on the cap

Installation Notes and Tips

Verify the thread diameter, cap depth, and overall dimensions before installation. Inspect the sealing surface and replace the cap if the original plastic is distorted or the gasket is no longer sealing correctly. Confirm application by matching the vehicle’s original cap design and part number MO348 before service.

Quality Assurance

MotoRad manufactures this cap using OEM-approved materials and produces it in ISO TS16949 facilities. The MO348 is built to meet or exceed OEM quality standards for consistent fit and sealing performance.