Baldwin B40120 Engine Oil Filter

Reliable Engine Oil Filter for Jaguar Vanden Plas, XJ6, and XJS

The Baldwin B40120 engine oil filter is designed specifically for Jaguar models from 1980 to 1994, including the Vanden Plas, XJ6, and XJS. Engineered to maintain optimal oil flow and filtration, this filter supports engine longevity and performance.

• Includes anti-drainback valve to prevent dry starts
• Equipped with a 20 psi bypass valve for consistent oil flow
• Integral gasket included for secure sealing
• Height: 5 13/32 inches (137.3 mm)
• Outside diameter: 3 11/16 inches (93.7 mm)
• Thread size: 1 inch
• Replaces Jaguar part number C42797

Technical Details and Compatibility

The Baldwin B40120 engine oil filter features an anti-drainback valve that prevents oil from draining out of the filter when the engine is off, reducing wear during startup. The 20 psi bypass valve ensures oil continues to circulate even if the filter becomes clogged, protecting the engine from oil starvation. With a height of 5 13/32 inches and an outside diameter of 3 11/16 inches, this filter fits precisely on Jaguar Vanden Plas, XJ6, and XJS models produced between 1980 and 1994. The included integral gasket simplifies installation and ensures a tight seal to prevent leaks. This filter replaces the original Jaguar part number C42797, making it a direct fit for your vehicle.

Applications and Problem Solving

• Prevents engine wear caused by oil starvation during cold starts
• Maintains consistent oil pressure with a reliable bypass valve
• Reduces risk of oil leaks with an integral gasket
• Filters contaminants to protect engine components
• Compatible with classic Jaguar Vanden Plas, XJ6, and XJS models

Installation Notes and Tips

Before installing the Baldwin B40120 oil filter, ensure the engine is cool to avoid burns. Remove the old filter and clean the mounting surface thoroughly. Apply a thin layer of clean engine oil to the integral gasket to improve sealing and ease installation. Screw the filter on by hand until the gasket contacts the mounting surface, then tighten according to manufacturer specifications, typically 3/4 to 1 turn. Check for leaks after installation and during initial engine operation.

Quality Assurance and Warranty

Baldwin engine oil filters are manufactured to meet strict quality standards for filtration efficiency and durability. The B40120 is designed to provide reliable performance for Jaguar Vanden Plas, XJ6, and XJS models. While specific warranty details may vary, Baldwin products generally come with a limited warranty against defects in materials and workmanship. Consult Baldwin or your parts provider for exact warranty terms.