MCS 104 BCD 4 Bolt Spider

Marsoni

M251S

$56.95

Get it in 3 business days with 1 day shipping. Friday, May 29

MCS 104 BCD 4 Bolt SpiderThe MCS USA BMX 104 bolt pattern 4 bolt spider is made from lightweight, thick and strong 6061 aluminum alloy. Features 104 bcd 4 bolt pattern sized Logos are laser etched on the side of the spider Fits 19mm spindle 3 piece cranks Specifications Material 6061 Aluminum Size 4 Bolt Pattern (104 bcd) 19mm Spindle Hole Diameter 6mm Thick

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
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The starter fit perfectly, in my Mercruiser 4.3 from 2004, although it was awkward to replace on my engine due to space constraints. I had a few questions for the supplier and quickly received very descriptive answers. Now the starter works perfect in my boat. In all a very good choice which I really can recommend others.

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Reviewed in the United States on June 27, 2024

Verified Purchase

A. WEAVER

San Leandro, US

★★★★★ 5

New starter

Part came promptly and was a direct match to the original starter. I did a bench test prior to install and had no issues.

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Reviewed in the United States on July 16, 2025

Verified Purchase

Roy W.

Waukegan, US

★★★★★ 5

Right part

Wonderful, part was right the firstt time,AWSOME!!

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Reviewed in the United States on July 26, 2025

Verified Purchase

10ESSEE

Draper, US

★★★★★ 3

Bit Longer than Genuine Quicksilver Starter Not same fit

It’s close to the Quicksilver Mercruiser starter but it’s not the same length and size. Also the internal gear sits differently. My 2012 Tahoe Mercruiser Alpha 3.0 has a back bracket that would not fit on because this starter is longer. I didn’t take the risk of testing it out by starting it as I noticed the gear inside sits a bit different and there is a knob on the front of the housing as the original does not. I’m not taking any chances. I just returned it and ordered the actual Quicksilver Starter that’s a little more $$ but totally worth it to have a proper fit.

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Reviewed in the United States on May 31, 2025