U-Joint Yoke – Short – Mercury Marine, MC-I/R/MR/Alpha I Gen II – ProMarine 64020

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Description

This is a short U-joint yoke from ProMarine – part number 64020 – designed for Mercury Marine stern drives, including MC-I, R, MR, and Alpha I Gen II models.

Short Yoke MerCruiser Alpha One Alpha One Gen II Driveshaft Replace 46020T02 eBa

If you're rebuilding your outdrive or replacing a worn u-joint, this yoke is the piece that connects the u-joint to the drive shaft.
It's a critical part of the marine driveline – a failure here means you're not going anywhere.

The brand is ProMarine – they specialize in marine aftermarket parts.
The manufacturer part number is 64020.
It's a short yoke, which is the standard length for these Mercury applications.
It's a new item, but the listing doesn't specify the material – though marine yokes are typically made of steel or stainless steel to handle the torque and corrosion.
No UPC listed, but the part number is clear.

Installation involves pulling the outdrive, disassembling the u-joint assembly, and pressing the old yoke off and the new one on.
It's not a beginner job – you need special tools like a press and a u-joint removal tool.
But if you're doing a full outdrive rebuild, this is one of the parts you'll need.

U Joint Yoke, Short MC I R/MR/Alpha I Gen II 46020 1 | Australia

It's a direct replacement for the original yoke – same spline count and dimensions.

EMP U Joint Yoke Short MC I R MR Alpha Gen II w Internal Clips 1967-1997 4602

This is a marine part – not for cars.

PTO Driveshaft Universal Joint Yoke suitable for Landcruiser 40 60

If your Mercruiser is vibrating, clunking, or just not performing smoothly, the u-joint and yoke could be worn.
Replacing the yoke with this ProMarine unit is a cost-effective alternative to buying a whole new assembly.

Boat Engine Seal MerCruiser Oil Passage Seal - Quad Ring For MC I R/MR/Alpha I Gen II Bravo 1967

Good for both saltwater and freshwater applications – just make sure to grease it properly before installation.

Shaft Yoke Drive Line Assembly Mercruiser Alpha One Gen 2