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| Attribute | Value |
|---|---|
| Center Electrode Core Material | Copper |
| Center Electrode Insulator Tip Projection | 0.19, 4.83 |
| Center Electrode Projection | Long Projection |
| Center Electrode Tip Material | Platinum |
| Core Nose Length | 0.449, 11.4 |
| Electrical Terminal Type | Non-removable Nut |
| Grade Type | Performance |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Standard |
| Ground Electrode Tip Material | Nickel |
| Hex Size | 5/8 |
| Hex Type | Hex |
| Indexed | No |
| Insulator Height | 2.026, 51.46 |
| Insulator Material | Ceramic |
| Pre Gap Size | 0.04, 1.02 |
| Reach | 0.679, 17.25 |
| Resistance | 4000 |
| Resistor Type | Yes |
| Seat Type | Tapered |
| Washer Included | No |
This part fits the following vehicles:
| SubmodelSUB- MODEL |
Body Style | Years | Engine | Attributes |
|---|---|---|---|---|
| Base | Coupe | 2005 - 2006 | V8 6.0L | RWD Automatic & Manual |
| Base | Coupe | 2004 | V8 5.7L | RWD Automatic & Manual |
We offer fast, reliable shipping on all orders:
This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.
Warranty does NOT cover:
We want you to be 100% satisfied with your purchase. That's why we offer:
| Brand | Part Number |
|---|---|
| ACDelco | 41-928 |
| ACDelco | R44LTSM |
| ACDelco | R44LTSM6 |
| ACDelco | R44LTSMA |
| Bosch | HR8LPX |
| Bosch | HR8LPX+ |
| Bosch | HR9LPP30X |
| Champion Spark Plug | RS14PMC4 |
| Motorcraft | AGSF43C |
| Motorcraft | SP461 |
| NGK | TR4GP |
| NGK | TR4VX |
| Torch | 8005 |
Fits Years: 2004 2005 2006
Fits Models: GTO
Keep your GTO's V8 engine firing on all cylinders with the right set of 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.
