MP39190 Ignition Boot Nut
Mouse Over to Zoom
Click to Enlarge

SIERRAMP39190 Ignition Boot Nut


In stock online.
Model # 10499770 | Mfg # MP39190UPC # 808282173944
MP39190 Ignition Boot Nut


5.0 Stars


MP39190 Ignition Boot Nut

Name Value
Type Bootnuts

Product Overview

This rotating rubber seal will protect your Sierra polyester ignition switch lock cylinder from moisture and dust.


  • Material: Weather-proof rubber
  • Thread Size: 13/16"-16
  • Application: All Sierra polyester ignition switches, 1996 & later

The Sierra Engine Parts Selector

In addition to ignition switch boot nuts, we offer a wide variety of other engine parts manufactured by Sierra. To see if we have the part you need, see our Engine Parts Selector, where you can search by engine make, serial number and model or year of manufacture.


The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

Related West Advisor Articles


Product Q & A