Voice or type your vehicle details and Wrenchy will confirm fitment in seconds.
| Attribute | Value |
|---|---|
| Center Electrode Core Material | Copper |
| Center Electrode Design | Standard |
| Center Electrode Insulator Tip Projection | 0.16, 4.0 |
| Center Electrode Projection | Mid Projection |
| Center Electrode Tip Material | Nickel |
| Electrical Terminal Type | Non-removable Nut |
| Grade Type | Standard Replacement |
| Ground Configuration | J-gap |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Standard |
| Ground Electrode Tip Material | Nickel |
| Hex Size | 5/8" (16mm) |
| Insulator Height | 2.07, 52.5 |
| Insulator Material | Ceramic |
| Manufacturer Heat Range | 5 |
| Material Grade | Nickel/copper |
| Part Number | Tr55 |
| Pre Gap Size | .060, 1.5 |
| Reach | 0.689, 17.5 |
| Resistance | 5000.0 |
| Resistor Type | Yes |
| Seat Type | Tapered |
| Service Number | Tr55 |
| Short Style Spark Plug | No |
| Skirt | No |
| Skirt Length | 0.0 |
| Stock Number | 3951 |
| Thread Diameter | 0.551, 14.0 |
| Washer Included | No |
This part fits the following vehicles:
This is a universal part that fits 3,698 vehicle configurations across 12 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:
Fits Years: 1978 1979 1982 1983 1984 1985 1986 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
Keep your LeSabre's reliable 3.8L V6 engine running smoothly with the correct new spark plugs.
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.
In operation since 2007. Trusted by over a million DIYers, mechanics, and body shops across all 50 states.
If it doesn't fit, we make it right. No gimmicks, no fine print.
Most retailers stop at 30 days. We give you a full four months to install, test, and return for a 100% refund — return shipping on us.
Brand-new aftermarket parts from trusted suppliers — built to original-equipment specifications so they fit and function like the factory unit, at a fraction of the price.
Ask Wrenchy →