Bosch 3973 Engine Oil Filter

Bosch Premium Oil Filter for Ford Super Duty

The Bosch Premium Oil Filter 3973 is a spin-on engine oil filter built to help keep dirt and harmful particles out of the oiling system. It is compatible with select Ford F-250 Super Duty and Ford F-350 Super Duty applications, including 2011-2022 Ford F-250 Super Duty and 2011-2022 Ford F-350 Super Duty models.

Key Features

• Spin-on oil filter design for straightforward OE-style replacement
• Cellulose paper filter media for engine oil filtration
• 20 micron rating for capturing fine contaminants
• Anti-drain back valve helps retain oil in the filter after shutdown
• Bypass relief valve supports oil flow if the media becomes restricted
• Nitrile gasket material for sealing performance
• 6.93 in. height and 3.701 in. outside diameter
• Inside thread size: UN-2B 1-16
• Burst pressure rated at 200 PSI

Detailed Description

Bosch Premium Oil Filters are built to maintain oil cleanliness and support engine wear protection through a blend of filtration-focused materials and OE-style fitment. Part number 3973 uses cellulose paper media and a 20 micron rating to help trap contaminants before they circulate through the engine. The anti-drain back valve and bypass relief valve add functional protection during startup and under restricted-flow conditions, while the nitrile gasket supports a secure seal. For Ford F-250 Super Duty and Ford F-350 Super Duty owners searching for a Bosch 3973 oil filter, this premium spin-on filter is a direct replacement option for routine maintenance.

Bosch Premium Oil Filter 3973 is a practical choice for drivers looking for a Ford Super Duty oil filter replacement that supports long-term engine cleanliness and consistent oil flow. It is also a relevant search match for Bosch 3973, Bosch Premium Oil Filter 3973, and Ford F-250 Super Duty oil filter applications.

What It Helps Address

• Engine wear caused by dirt and abrasive particles in the oil
• Reduced filtration efficiency during normal oil service intervals
• Oil drain-back after shutdown that can delay lubrication at startup
• Restricted oil flow when the filter media becomes loaded
• Maintenance needs for 2011-2022 Ford F-250 Super Duty and 2011-2022 Ford F-350 Super Duty trucks

Installation Notes and Tips

Verify the thread size, gasket sealing surface, and overall dimensions before installation. Pre-lubricate the gasket with clean engine oil, tighten to the vehicle manufacturer’s specified procedure, and replace the filter during regular oil service. Confirm the application against your exact Ford F-250 Super Duty or Ford F-350 Super Duty model year before ordering Bosch 3973.

Quality Assurance

Bosch Premium Oil Filters are engineered to support engine protection by helping keep contaminants out of the lubrication system and maintaining oil flow through the filter assembly. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.