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| Attribute | Value |
|---|---|
| Center Electrode Tip Material | Iridium |
| Classification | Champion Iridium |
| Electrical Terminal Type | Non-removable Nut |
| Ground Electrode Core Material | Platinum |
| Ground Electrode Tip Design | J Gap |
| Hex Size | 0.625, 15.880 |
| Insulator Height | 0.12 |
| Plug Type | Rs12wmpb4 |
| Pre Gap Size | 0.050, 1.27 |
| Reach | 0.689 |
| Seat Type | Tapered |
This part fits the following vehicles:
This is a universal part that fits 2,759 vehicle configurations across 11 makes.
We offer fast, reliable shipping on all orders:
We want you to be 100% satisfied with your purchase. That's why we offer:
This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.
Warranty does NOT cover:
| Brand | Part Number |
|---|---|
| ACDelco | 41-100 |
| ACDelco | 41-110 |
| ACDelco | 41-983 |
| ACDelco | 41-985 |
| Bosch | 4509 |
| Bosch | HGR9LQIO |
| Champion Spark Plug | RS14WMPB4 |
| General Motors | 12 57 1164 |
| General Motors | 12591131 |
| General Motors | 12621258 |
Fits Years: 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020
Everything you need to know before you buy new aftermarket spark plugs for your LaCrosse.
Read Full Guide →If your scan tool is showing one of these trouble codes, this part is a common fix. Each guide explains the code, how to diagnose it, and exactly what to replace.
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