Wix 51231 Engine Oil Filter

WIX 51231 Engine Oil Filter Overview

The WIX 51231 engine oil filter is built for dependable oil filtration in Jaguar applications that call for a spin-on lube filter with OE-style service intervals. It supports conventional, synthetic, and synthetic-blended motor oils and is suited for daily driving, stop-and-go traffic, short trips, and severe-duty conditions.

• Spin-on lube filter with 1-12 thread size
• Cellulose media with 25 micron filtration
• Anti-drainback valve included
• Bypass relief valve setting: 22
• Burst pressure: 375
• Flow rate: 12-16 GPM
• Height: 4.343 in; outer diameter: 3.660 in

Filtration Performance and Fitment

WIX 51231 is engineered to trap dirt and contaminants while maintaining oil flow for normal and severe driving conditions. It is recommended for OEM oil and filter change intervals, typically 3,750 to 10,000 miles and not to exceed 12 months. This part cross-references ACDelco PF964 and FRAM PH2931 for the same application.

Compatible With Jaguar Vanden Plas, Jaguar XJ6, Jaguar XJR, Jaguar XJ12, Jaguar XJS, and Jaguar XJRS applications across the listed model years. Fits 1982-1997 Jaguar Vanden Plas, N/A; Fits 1995-1997 Jaguar XJ6, N/A; Fits 1978-1992 Jaguar XJ6, N/A; Fits 1995-1997 Jaguar XJR, N/A; Fits 1995-1996 Jaguar XJ12, N/A; Fits 1981-1989 Jaguar XJ12, N/A; Fits 1976-1979 Jaguar XJ12, N/A; Fits 1995-1996 Jaguar XJS, N/A; Fits 1976-1992 Jaguar XJS, N/A; Fits 1994 Jaguar XJ12, N/A; Fits 1993-1994 Jaguar XJ6, N/A; Fits 1993-1994 Jaguar XJS, N/A; Fits 1993 Jaguar XJRS, N/A; Fits 1990-1992 Jaguar XJ12, N/A; Fits 1992 Jaguar XJS, N/A; Fits 1987 Jaguar XJ6, N/A; Fits 1976-1977 Jaguar XJ6, N/A.

Common Problems This Filter Helps Address

• Excess dirt and contaminant buildup in engine oil
• Dry starts after extended service intervals
• Reduced filtration performance in stop-and-go driving
• Oil flow concerns during severe-duty use
• Routine maintenance on Jaguar XJ6, XJ12, XJS, XJR, XJRS, and Vanden Plas models

Installation Notes and Tips

Verify the thread size, gasket sealing surface, and filter clearance before installation. Replace the filter at the manufacturer-recommended oil change interval, and pre-fill only if the vehicle service procedure allows it. The anti-drainback valve helps retain oil in the filter after shutdown, which is especially useful when the vehicle sits between starts.

Quality Assurance

WIX filters are built to meet OE-style service expectations and are tested for filtration efficiency and capacity. The 51231 is designed for consistent performance with the oil change intervals specified by the vehicle manufacturer.