model00238
manufacturer
Weight:19,65 kg

Z-drive lower part for Mercruiser R/MR/ Alpha One Gen.1, MD1623-8951A43

Lieferung Fri 07. Aug - Tue 11. Aug 2026 **
24 months statutory warranty

Ready-to-install Z-drive underwater part (standard direction of rotation) for Mercruiser with 4/6 cyl. in-line engine and V6/V8 models. Mercruiser ref. no. 1623-8951A43

Complete underwater part 1.238 for MerCruiser R / MR / Alpha One - OEM compatible, ready to install & precisely translated

This pre-assembled 1.238:1 ratio underwater part is a robust, high-performance and fully OEM-compatible replacement solution for MerCruiser R / MR / Alpha One Gen I Z-drives up to 1990. It is particularly suitable for high-speed applications with V8 engines or tuned drive configurations where a low gear ratio is required.

Technical features:

  • Suitable for: MerCruiser R / MR / Alpha One Gen 1 (up to approx. 1990)

  • Gear ratio: 1.238:1 - ideal for high-performance setups with maximum top speed

  • Supplied pre-assembled: including propeller shaft, drive shaft, water pump, shift mechanism, bearings, seals

  • OEM-compatible: replaces corresponding original parts with the same gear ratio

  • Material: Seawater-resistant aluminum, powder-coated for maximum corrosion resistance

Your benefits at a glance:

  • Ready for immediate installation & fully pre-assembled - saves installation time & minimizes errors

  • Excellent power transmission at high engine speeds

  • OEM-compatible & 100% accurate fit - compatible with original upper parts & transom units

  • Reliable shifting performance & long service life

  • Ideal for sports, racing & performance boats with MerCruiser drive

Areas of application:

  • Replacement of damaged or worn underwater parts in high-performance drives

  • Use with tuned MerCruiser systems that are designed for speed

  • Suitable for professional applications, gliders and powerboats

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