MERCURY Oil Filter | Bulletin P-21-7-1 Oil Filters, Gm Gas Engines (Part #835440) – Factory-direct from U.S. Boatworks. Over 40+ years of marine parts expertise.

FITS: HP: 153 | 4-cylinder

Family-owned and trusted since 1985, U.S. Boatworks specializes in hard-to-find MERCURY parts. Our expert team is here to help – whether you’re a DIY boater or professional mechanic.

Factory Parts Advantage

• Exact match to original equipment
• Built for marine duty cycles
• Superior corrosion resistance

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• Huge OEM parts inventory
• Expert help included
• Call today: 913-342-0011