Wix Filtration Products 51021 Engine Oil Filter

Description:

The WIX 51021 Engine Oil Filter is a heavy-duty cartridge-style lube filter designed for bypass oil filtration in commercial trucks, industrial engines, agricultural equipment, buses, and construction machinery. Commonly installed in Aero-Coach buses, American LaFrance trucks, Clark equipment, Case machinery, and other industrial diesel and gasoline engine platforms requiring metal canister cartridge filtration systems. Maintenance teams, fleet technicians, and industrial service facilities use this oil filter for preventive maintenance, contaminant removal, and long-term engine protection.

Applications:

The WIX 51021 oil filter is widely used in heavy-duty industrial and fleet environments requiring dependable oil filtration and contaminant control under demanding operating conditions. It is commonly integrated into medium-duty and heavy-duty trucks, agricultural machinery, construction equipment, industrial engines, and commercial bus fleets where proper lubrication filtration is critical for maintaining engine reliability, reducing wear, extending oil life, and supporting long service intervals. The enhanced cellulose media and metal canister design provide durable performance in continuous-duty applications.

Technical Specifications:

• Brand: WIX
• Part Number: 51021
• Product Type: Engine Oil Filter
• Filter Style: Cartridge Lube Metal Canister Filter
• Service Type: Lube / Oil Filtration
• Filter Type: By-Pass
• Filtration Media: Enhanced Cellulose
• Height: 7.625 Inches
• Outer Diameter: 4.156 Inches
• Inner Diameter: 0.553 Inches
• Duty Type: Heavy Duty
• Application Type: Engine Oil Filtration
• Installation Type: Cartridge Canister Installation
• Function: Oil Contaminant Removal and Engine Protection
• Compatible Equipment: Aero-Coach, American LaFrance, Clark, Case, Reo, Industrial Engines
• Industry Applications: Fleet Maintenance, Agriculture, Construction, Industrial Equipment
• Cross Reference: NAPA Gold 1021
• UPC: 765809510210
• Country of Origin: United States
• Operating Function: Engine Lubrication System Protection

Common Replacements:

• Baldwin P42
• Donaldson P550117
• AC Delco AC83