FREE SHIPPING
Free shipping on every order — no minimum purchase required.DESCRIPTION
Mercruiser IA/IB/IC Stern Drive Lower Unit Gearcase — Direct replacement gearcase for Mercruiser inboard/outboard stern drives, fits IA, IB, and IC models. This factory original unit ensures proper fit and performance.
- OEM part number 1623-2511A1
- Compatible with Mercruiser IA, IB, and IC stern drives
- Complete lower unit assembly with integrated gearing
- No longer available from manufacturer (NLA)
Original equipment quality for reliable water intake and gear performance — ideal for rebuilds and replacements on vintage or current Mercruiser applications.
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
Recently Viewed Parts
Why Shop with Find My Part?
- SHIPS IN 24 HOURSOrders dispatched within one business day, delivered in 2–5 business days.
- EASY EXCHANGESHassle-free exchanges. Not happy? We'll make it right.
- LIVE SUPPORT
Get lightning-fast service. Start an instant chat, Mon–Fri 9am–5pm EST.