FREE SHIPPING
Free shipping on every order — no minimum purchase required.DESCRIPTION
837-5991A3 Cylinder Block for Mercury 7.5 HP Outboards (1974-1977)
This OEM replacement cylinder block fits Mercury 75 and 7.5 HP outboard motors from 1974 to 1977. Restores compression and engine performance on aging two-stroke powerheads.
- Original Mercury part number 5991A3
- Compatible with 7.5 and 75 HP models
- Cast iron construction for durability
- Direct replacement—no modifications needed
Essential for rebuilding or repairing vintage Mercury outboards that show loss of power or compression.
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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