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U-Joint Assembly | Sierra 18-6401

U-Joint Assembly | Sierra 18-6401

Sierra

$1,061.99 USD
$815.99 USD $1,061.99 USD
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21 in stock

U-Joint Assembly | Sierra 18-6401

U-Joint Assembly | Sierra 18-6401

Direct replacement yoke assembly for Mercruiser Bravo I, II and III stern drives from 1998-2005.

  • Sierra replacement U-joint assembly
  • For Mercruiser Bravo I, II, and III model stern drives serial number OB664190-up from 1998-2005
  • Includes O-rings
  • Replaces Mercury 12784A10, 864244A2
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Let customers speak for us

from 82 reviews
Would have been 5 stars but....

Would have been 5 stars but, I did not receive a promotional sticker with my $2000 drive unit. Just kidding, everything was great!

William S.
Alpha One® Gen I Sterndrive Complete - 1972-1990 | SEI SE106
Crusader parts

Great company to work with!

Tom B.
Gasket Exhaust Elbow 3 Hole | Crusader 96108

Ordered a Piranha Propellers Complete A-Series 4 Blade Propeller from Macomb Marine Parts and even though we’re international, it arrived in just over a week — fast and reliable service. The propeller itself is a real lifesaver. We had the same model before, and after hitting a rock that damaged two blades, we were able to swap them right on the water and make it back to the marina without issue — something you simply can’t do with a regular aluminum prop. For peace of mind we decided to buy a complete new set (hub and blades) since an impact like that could cause hidden damage, but the system really proved its worth.

Alexiel M.
Piranha Propellers Complete A-Series 4 Blade Propeller

3 in. Exhaust Elbow | Pleasurecraft R029001

Randolph D.
3 in. Exhaust Elbow | Pleasurecraft R029001

Excellent part.

Nelson R.
5" x 4" x 4" Air Divider Adapter Y | MSI Marine AY544
Piranha Propeller

I couldn’t find a Piranha propeller dealer near me in Canada but found Macomb Marine Parts who could deliver to me. The order process was smooth and I was even contacted via email for clarification regarding blade shape and they were very helpful in choosing the best shape for my purposes.
I can’t comment on the prop’s performance yet as we haven’t had the boat in the water yet.

S.S.
Piranha Propellers Propulsion Kit A-Series 4-Blade

Perfect replacement. thank you

MICHAEL W.
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Perfect replacement

Michael K.
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Perfect match

Perfect match to the original Chris Craft blue. Competitive price and delivery was quick

jason b.
Spray Paint Color Vision Chrysler Blue | Moeller 025340
Great Product

Great Product, easy to install, work well

Kevin M.
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Magnesium anode for a 1994 OMC Cobra (SX-C) transom shield

Obtaining magnesium anodes to install on the OMC Cobra (SX-C) sterndrive, for fresh water use. Received the anode within a week of ordering the part, which is not going to be installed until Spring.

Paul B.
Volvo Penta Magnesium Transom Shield Anode | Martyr CM3854130M

Black Liquid Electrical Tape - 4 oz. | Star Brite 084104B

JEFFREY K.
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As described

Jonathan C.
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Step Wrench Thru Hull 1/2 in. - 1 1/2 in.

Very Happy!! Just what I needed!!

Peter B.
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Quality seems good

Outdrive spent 4 months docked in salt water with no visible rust on the stainless steel braided hoses

Thurman W.
Hose Kit For Alpha One (16-3/16" & Gen II) | SEI 9B-106A