My Account
Shopping Cart

Quicksilver 864363A1 Shift Plate Kit for MerCruiser Alpha One Stern Drive Carbureted Engines

Manufacturer

Part Number

864363A 1
Sale Price

$252.89

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Quicksilver 864363A1 Shift Plate Kit is a genuine OEM Mercury Marine upgrade kit designed for MerCruiser Alpha One stern drive units equipped with carbureted engines. This kit provides a modern replacement for older roller-lever style shift interrupt switch assemblies that have been discontinued, bringing your sterndrive's shifting system up to current factory specifications as outlined in MerCruiser Service Bulletin 2002-1.

The shift interrupt (cutout) switch is a critical safety and performance component that momentarily reduces engine power during gear engagement, ensuring smooth and reliable shifting between forward, neutral, and reverse. This kit replaces the complete interrupter switch assembly with a redesigned shift plate that offers improved durability and a direct bolt-on fit.

Key Features:

  • Genuine OEM Quicksilver / Mercury Marine part — not aftermarket
  • Upgrades discontinued older-style shift interrupt switch assemblies
  • Direct bolt-on replacement — no modifications required
  • Issued per MerCruiser Service Bulletin #2002-1
  • Compatible with MerCruiser Alpha One Gen I and Gen II stern drives
  • Fits carbureted 3.0L, 4.3L, 5.0L, and 5.7L MerCruiser engines
  • Backed by Mercury Marine's 1-year factory warranty against defects and workmanship

Replaces Obsolete MerCruiser Part Numbers: 39670A1, 39670A3, 39670A5, 39670A15, 39670A22, 39670A28, 39670A33, 87-19752A3, 87-19752A6, 8719752A6

Restore proper shift interrupt function and protect your drivetrain with this factory-correct Quicksilver replacement kit.

Autoplcity got my order shipped quick! I wanted to make sure that it was the right order and they helped me out through chat no problem. They're also centrally located so I suppose shipments to anywhere in the US wouldn't take long at all. They also had a part that I couldn't find anywhere in Salt lake and only few other places on the Internet. None at this good a price. I'm sticking with these guys.

Quick and efficient

autoplicity from now on will be my first call. everything was just what they said. and delivery was the best time ever. placed order sunday night had part wed. morning. WOW thankz

Shopping is easy!

Good price

Website was very easy to navigate.

Very fast website and easy to use.

Only downside is I couldn't use multiple coupons - one for shipping discount and another for 10% off.

Checked everywhere - lowest price on the web.

GREAT PRICES AND FAST SHIPMENT

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy