Wix 51091 Engine Oil Filter

WIX 51091 Engine Oil Filter Overview

The WIX 51091 engine oil filter is built for dependable oil filtration in everyday driving and severe service conditions. It is a spin-on lube filter with enhanced cellulose media, a 21-micron rating, and an anti-drain back valve for added protection against dry starts.

Compatible with select Isuzu Pickup and Trooper applications, as well as Chevrolet S10, GMC S15, and Chevrolet S10 Blazer fitments listed below, this filter supports routine oil service intervals recommended by the OE vehicle manufacturer.

Key Features

• Spin-on engine oil filter for gasoline and light-duty applications
• Enhanced cellulose media for efficient contaminant capture
• Anti-drain back valve helps retain oil in the filter after shutdown
• 21.00 micron filtration rating
• Flow rate: 12-16 GPM
• Burst pressure: 275
• Thread size: 1-12
• Closed top inner diameter and 4.300 outer diameter top

Filtration Performance

The WIX 51091 is engineered to trap dirt and contaminants while maintaining oil flow under normal and severe driving conditions such as stop-and-go traffic, short trips, dirt roads, construction sites, and interstate travel. Its anti-drain back valve helps reduce dry engine starts when service intervals extend toward the upper end of the manufacturer-recommended range. This part cross-references FRAM PH6354 and NAPA Gold Filters 1091 for the same application.

What This Oil Filter Helps Address

• Engine wear caused by circulating dirt and debris
• Oil drain-back after shutdown that can contribute to dry starts
• Reduced filtration efficiency during extended service intervals
• Contaminant buildup from stop-and-go or short-trip driving
• Oil system stress in severe-duty driving environments

Installation Notes and Fitment

Install the WIX 51091 during routine oil service and verify thread size, gasket sealing surface, and filter clearance before tightening. Use the vehicle manufacturer’s oil change interval guidance and confirm the correct application for your engine.

• Fits 1984-1987 Isuzu Pickup, N/A
• Fits 1984-1987 Isuzu Trooper, N/A
• Fits 1984-1985 Chevrolet S10, N/A
• Fits 1984-1985 GMC S15, N/A
• Fits 1984 Chevrolet S10 Blazer, N/A

Quality Assurance

WIX oil filters are built for OEM-recommended service intervals and are backed by laboratory-tested filtration performance data referenced by the manufacturer. The 51091 is designed for consistent oil filtration in normal and severe driving conditions.