Mobil 1 M1-405A Engine Oil Filter

Mobil 1 M1-405A Engine Oil Filter

The Mobil 1 M1-405A is a spin-on engine oil filter built for Ford Super Duty gas and diesel applications that call for a 1"-16 UN2B thread. It features an anti-drain back valve, bypass relief valve, and lathe-cut gasket for dependable oil control in demanding service.

Key Features

• Spin-on lube filter design for straightforward service replacement
• Anti-drain back valve helps retain oil in the filter after shutdown
• Bypass relief valve with 8-18 setting for controlled oil flow under restriction
• Lathe-cut gasket for a precise sealing surface
• 6.65 in. height with 3.70 in. outside diameter
• 1"-16 UN2B thread size

Detailed Description

The Mobil 1 M1-405A oil filter is engineered as a spin-on filter for engines that use the listed thread and size specifications. Its anti-drain back valve helps keep the filter full of oil between starts, while the bypass relief valve provides an alternate flow path if the filter media becomes restricted. This makes it a practical choice for Ford F-250 Super Duty and Ford F-350 Super Duty applications, including 2011-2014 and 2020-2024 models, as well as 2015-2019 trucks noted for synthetic oil applications and premium filter recommendations. This part cross-references Bosch 3973 and K&N HP-4005 for the same application. The Mobil 1 M1-405A is a direct-fit engine oil filter choice for owners searching for a Ford F-250 Super Duty oil filter, Ford F-350 Super Duty oil filter, or M1-405A replacement filter.

What It Helps Address

• Oil drain-back after engine shutdown
• Restricted oil flow during cold starts or extended service intervals
• Filter sealing issues caused by worn or mismatched gaskets
• Routine oil service on Ford F-250 Super Duty and Ford F-350 Super Duty trucks
• Replacement needs for synthetic oil applications that call for a premium filter

Installation Notes and Tips

Verify thread size, gasket diameter, and overall filter dimensions before installation. Pre-lube the gasket, tighten to the engine manufacturer’s specification, and confirm the old gasket is removed from the mounting surface. For Ford F-250 Super Duty and Ford F-350 Super Duty service, match the filter to the engine’s oiling requirements and service interval.

Quality Assurance

Mobil 1 filters are built to meet the dimensional and functional requirements listed here, including anti-drain back and bypass relief valve features. Confirm fitment by year, model, and engine application before installation. Compatible with 2011-2014 Ford F-250 Super Duty, 2011-2014 Ford F-350 Super Duty, 2015-2019 Ford F-250 Super Duty, 2015-2019 Ford F-350 Super Duty, 2020-2024 Ford F-250 Super Duty, and 2020-2024 Ford F-350 Super Duty.