K&N HP-1003 Engine Oil Filter

K&N HP-1003 Oil Filter Overview

The K&N HP-1003 oil filter is a spin-on engine oil filter built for Toyota and Lexus applications that call for a 3/4 in.-16 thread and a wrench-off nut design. It uses high flow premium media, a Viton rubber gasket, and a durable canister to support clean oil circulation and dependable engine protection.

Compatible With many Toyota and Lexus models, including the Toyota Camry, Toyota Corolla, Toyota RAV4, Lexus RX350, and Lexus GX550, this filter is engineered for routine service on vehicles using synthetic, conventional, or blended motor oils.

• High Flow Premium Media helps capture contaminants while maintaining steady oil flow
• Anti-drain back valve helps retain oil in the filter after shutdown
• Bypass valve and 11-17 PSI relief valve support proper oil delivery under operating conditions
• Heavy-duty spin-on canister is built for durability
• One-inch welded hex nut simplifies removal during service
• Viton rubber gasket supports a secure seal
• Designed for service intervals recommended by vehicle manufacturers

Detailed Product Description

K&N HP-1003 is a premium engine oil filter designed around consistent filtration and reliable oil flow. The pleated synthetic-blend media is paired with a robust canister and a wrench-off nut, making it a practical choice for maintenance on a wide range of Toyota and Lexus vehicles. The HP-1003 part number is commonly searched for applications such as Toyota Tacoma, Toyota Tundra, and Lexus NX350 service work, especially where a spin-on filter with easy removal is required.

This part cross-references Gates 51394 and 70185 for the same application.

What It Helps Address

• Oil contamination from normal engine wear and suspended debris
• Restricted oil flow caused by a filter that loads too quickly
• Hard-to-remove filters during routine oil changes
• Oil drain-back after shutdown that can delay lubrication on restart
• Seal leakage at the filter mounting surface

Installation Notes and Tips

Verify thread size, gasket diameter, and vehicle application before installation. The HP-1003 uses a spin-on design with a 1-inch removal nut, which can simplify service access in tight engine bays. Always follow the vehicle manufacturer’s oil change procedure and torque guidance, and pre-fill only when the service procedure allows it.

Quality Assurance

K&N backs the HP-1003 with a 1-Year Limited Warranty. The filter is engineered to withstand manufacturer-recommended service intervals and is built with a heavy-duty canister for long-term durability.