Mahle B31703 Engine Oil Filter Adapter Gasket

Engine Oil Filter Adapter Gasket for Ford Applications

The Mahle B31703 engine oil filter adapter gasket is a molded rubber sealing component for select Ford, Lincoln, and Mercury vehicles. It is built for engines without oil coolers and helps maintain a secure seal at the oil filter adapter during service.

For buyers searching for a Ford Crown Victoria oil filter adapter gasket, Lincoln Town Car gasket, or Mercury Grand Marquis engine seal, this Mahle part number B31703 provides an OE-style replacement option backed by Mahle sealing expertise.

Key Features

• Molded rubber gasket material for consistent sealing performance
• Engine oil filter adapter gasket for service and repair work
• Fits select Ford, Lincoln, and Mercury models with engines without oil coolers
• Mahle sealing products are used by OEMs and technicians worldwide
• Cross-references FEL-PRO 70415 for the same application

Detailed Description

Mahle B31703 is an engine oil filter adapter gasket designed to seal the adapter interface and help prevent oil leakage at the filter housing area. The molded rubber construction supports a reliable fit on the listed Ford, Lincoln, and Mercury applications, including popular platforms such as the Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis. It also applies to several trucks and vans, including the Ford F-150, E-150, and E-250, when equipped without oil coolers.

This gasket is a practical replacement for service jobs where the original seal has hardened, flattened, or begun to seep. The part number B31703 is also associated with Ford F1AZ 6840-A and F6AZ 6840-AA references.

What It Helps Fix

• Oil seepage around the oil filter adapter
• Leaks caused by a flattened or aged rubber seal
• Loss of sealing integrity after adapter service
• Maintenance issues on engines without oil coolers
• Repeat leaks after prior gasket replacement

Installation Notes and Tips

Verify engine configuration before installation, since this gasket is listed for engines without oil coolers. Clean the sealing surfaces thoroughly and inspect the adapter for damage, corrosion, or debris before fitting the new gasket. On 2003-2004 Ford Mustang and related applications, follow the service procedure for the engine coolant thermostat seal and use the included gasket from the set where applicable.

Fitment examples include 1992-2011 Ford Crown Victoria, 1991-2011 Lincoln Town Car, 1992-2011 Mercury Grand Marquis, 1997-2010 Ford F-150, and 2003-2010 Ford E-150/E-250.

Quality Assurance

Mahle sealing products are trusted by OEMs and technicians around the globe for engine sealing applications. B31703 is manufactured as a molded rubber gasket to support dependable service replacement performance.