Mercury V8 200-300 HP ProXS TORQUEMASTER Lower unit 2018-2025
Mercury V8 200-300 HP ProXS TORQUEMASTER Lower unit 2018-2025
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Need help with fitment? Email orders@hawkeyemarine.net with your engine make, model, year, and serial number so we can help you find the right part.
Mercury V8 Pro XS TorqueMaster Lower Unit (Years 2018-2025)
These are original Mercury-sourced lower units, not SEI gearcases, supplied through OBR Parts and Marine.
Availability note: This item is currently on backorder with our supplier due to high demand. Placing an order reserves your spot in their production queue, and we'll contact you with an updated lead time before your order ships. If you need this unit urgently, please contact us before ordering so we can give you the most current timeline.
Key Features and Specs:
- Gear Ratio: Typically 1.75:1 (standard for TorqueMaster on V8 Pro XS models, optimized for high-speed performance).
- Propeller Shaft: 19 splines (heavy-duty 1.25" stainless steel, designed for demanding applications on these V8s). Compatible with high-performance props; we recommend the Flo-Torq SSR HD hub kit #8M0101603 or equivalent.
- Water Pump & Gasket Kit: Included (water pump not pre-installed; install it during setup and add gear oil).
- Drive Shaft: Included.
Warranty: 2-year warranty included. An optional 12-month extended warranty is available for $608 (must be added within 30 days of purchase).
Core: If returning a core (your old lower unit), credit is determined by condition inspection. Maximum core value for this lower unit is $500.
Important Selection Tip: To make sure you get the right match (shaft length, rotation, and exact model compatibility), please provide your motor's serial number and model number (found on the transom bracket). Email orders@hawkeyemarine.net or call 615-691-1433. We're here to help!
Available Configurations and Shaft Lengths (contact us for exact pricing, availability, and upcharges):
| Shaft Length | Year Range | Engine Type / Notes | Typical Use |
|---|---|---|---|
| 20" (Standard) | 2018-2025 | Mercury V8 Pro XS TorqueMaster | Most common |
| 25" (XL) | 2018-2025 | Mercury V8 Pro XS TorqueMaster | Extra-long/offshore |
| 30" (XXL) | Select models | Mercury V8 Pro XS TorqueMaster (offshore) | Ultra-long/taller transoms |
If you have questions, need fitment verification, or want quotes on related parts (prop, hub kit), email us at orders@hawkeyemarine.net or call 615-691-1433.
About Hawkeye Marine: As a dealer for OBR Parts and Marine (established 1982), we sell new and rebuilt powerheads, lower units, and sterndrives, backed by fitment help from outboard specialists.
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