FMP Buyouts 1637 Heavy-Duty Power Steering Cartridge Filter

The FMP Buyouts 1637 is a full-flow power steering cartridge filter engineered for heavy-duty truck applications. Designed to keep power steering fluid clean and free from harmful contaminants, this filter helps maintain precise steering response and extends the service life of the power steering pump and related components.

Key Features:

• Filter Style: Power steering cartridge (spin-on canister)
• Media Type: Cellulose filtration media
• Nominal Micron Rating: 25 microns
• Height: 4.125 inches
• Outer Diameter: 5.000 inches
• Inner Diameter (Bottom): 0.860 inches
• Inner Diameter (Top): 1.500 inches
• Duty Class: Heavy-duty (HD)
• High-strength, corrosion-resistant construction for long-lasting performance

Cross-Reference Part Numbers: NAPA Gold 1637, WIX 51637, Baldwin P528, Purolator H26025, Donaldson P550637, Fleetguard HF741, and many others.

This power steering filter is a direct replacement for OEM-specified service intervals on a wide range of Class 7–8 heavy-duty trucks including Freightliner, Kenworth, Peterbilt, Volvo, Western Star, International, Mack, and White/GMC platforms. Regular replacement helps prevent steering issues such as pump whine, sluggish response, and premature component wear.