aFe Magnum FLOW PRO DRY S Air Filter

1988–1992 BMW 535i / 735i

Part #: 31-10050

Overview

The aFe Magnum FLOW PRO DRY S Air Filter is a high-performance, oil-free replacement filter designed specifically for BMW models from 1988 to 1992, including the 535i and 735i. Engineered to outperform stock paper filters, this filter helps you unlock more horsepower and torque while maintaining ease of maintenance and durability. Whether you're a daily driver, a performance enthusiast, or someone seeking reliable filtration, this filter provides a perfect balance of airflow, filtration efficiency, and longevity.

Constructed with advanced synthetic media and a durable polyurethane frame, the PRO DRY S filter ensures your engine breathes cleaner air, supporting improved throttle response and overall engine performance. Its washable and reusable design makes it a cost-effective upgrade that can be cleaned and reused multiple times, reducing waste and ongoing replacement costs. The tall, evenly spaced pleats maximize dust holding capacity, extending service intervals and maintaining optimal airflow over the lifespan of the filter.

Key Features

The aFe Magnum FLOW PRO DRY S Air Filter incorporates several innovative features to enhance your vehicle's performance and reliability:

• Constructed with 100% polyurethane on all four sides, providing a durable, oil-free filter element that resists cracking and deterioration over time.
• Two layers of progressively finer mesh synthetic media maximize dust filtration while maintaining high airflow, ensuring your engine receives clean, unrestricted air.
• Open pleat design increases surface area, promoting better dust holding capacity and longer service life between cleanings.
• Washable and reusable, allowing for multiple cleaning cycles without sacrificing performance or filtration efficiency.
• Integrated urethane bump seal ensures a tight, secure fit in the factory air box, preventing unfiltered air from bypassing the filter.
• Designed for easy maintenance, with a simple cleaning process that restores the filter's performance without the need for oiling or complex procedures.
• Manufactured to meet or exceed OEM standards, providing a reliable upgrade for your BMW's intake system.
• Optimized for high airflow, supporting increased horsepower and torque for spirited driving and performance tuning.

Construction & Design

The aFe Magnum FLOW PRO DRY S Air Filter features a robust construction with a high-quality synthetic media layered for maximum filtration efficiency. The polyurethane frame provides structural integrity and resistance to heat and engine bay conditions. The open pleat design not only enhances dust capacity but also ensures consistent airflow, which is critical for maintaining engine responsiveness. Its precise engineering and manufacturing process guarantee a perfect fit in the factory air box, with no modifications required for installation.

Installation & Fitment

The aFe Magnum FLOW PRO DRY S Air Filter is a direct replacement for the factory filter, designed for a bolt-on installation with no cutting, drilling, or tuning required. Simply remove the stock filter and install this high-flow, washable filter into the OEM air box. Its precise dimensions and urethane bump seal ensure a secure, airtight fit, making installation quick and straightforward for both DIY enthusiasts and professional mechanics.

• Easy, bolt-on installation with no modifications needed
• Compatible with OEM air box and intake system
• No special tools or tuning required

What's Included

• High-performance aFe Magnum FLOW PRO DRY S Air Filter
• Installation instructions

Ideal For

• BMW owners seeking improved airflow and engine performance
• Performance enthusiasts looking for a washable, reusable filter
• Daily drivers and weekend warriors alike who want reliable filtration with minimal maintenance