DESCRIPTION
Mercury 1987-93 Standard Piston 70-100 HP (Part #815965T4, Cross Reference #777-9009-1) fits Mercury outboard motors in the 70, 75, 80, 90, and 100 horsepower range from 1987-1993.
- OEM replacement piston for Mercury outboards
- Compatible with 70, 75, 80, 90, and 100 HP models (1987-1993)
- Standard factory specifications
- Restores compression and engine performance
Essential maintenance part for reliable engine rebuild and restoration on vintage Mercury outboards.
SHIPPING & RETURNS
SHIPPING
- Free Shipping on all orders — no minimum purchase required.
- Orders are dispatched within 24 hours of purchase (business days).
- Estimated delivery: 2–5 business days within the contiguous United States.
- Tracking information emailed as soon as your order ships.
RETURNS
- Exchanges accepted — we want you to be completely satisfied.
- If a part does not fit or is not as described, contact us within 7 days for an exchange.
- Items must be in original, unused condition and in original packaging.
WARRANTY
- 1-Year extended warranty available at additional cost — ask us for details.
FITMENT & COMPATIBILITY
Please verify that this part is compatible with your vehicle's year, make, model, and trim level before ordering. Part numbers and fitment details are listed in the product description. If you have any questions about compatibility, our team is happy to help — contact us by phone or email before purchasing.
Phone: (803) 723-7074
Email: sales@findmypart.shop
Hours: Mon–Fri, 9am–5pm EST
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