- Use the correct deep socket size to loosen each spark plug one or two turns. NOTE: To remove spark plugs from aluminum heads, allow the engine to cool. The heat of the engine, in combination with a spark plug that is still hot, may cause the spark plug threads to strip the cylinder head upon removal.
- ACDelco Professional Iridium Spark Plugs are the high quality replacement ideal for many vehicles on the road today. They are our latest in spark plug technology and an exact replacement for your vehicles original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function.
- 7 Years / Unlimited Miles on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details.
- Grasp the spark plug boot and gently rotate it 90 degrees counterclockwise. Pull the spark plug boot and cable away from the spark plug. If necessary, use a spark plug boot removing tool. DO NOT grab or violently pull spark plug cables.
- Apply dielectric grease into the boot area to reduce the chance of exterior tracking on the buttress tower of the spark plug. This grease also promotes a good heat transfer between the spark terminal screw and boot terminal.
- Brush or air blast dirt away from the well areas before removing spark plugs. CAUTION: Use goggles to protect eyes from debris when applying compressed air to spark plug wells.
- Remove each spark plug and place each one in a tray by cylinder number. This will help identify and relate any unusual condition to the cylinder involved.
- When it comes to replacing your spark plugs, ACDelco offers a full line of Professional, premium aftermarket Spark Plug products. Choose from our Iridium, Double Platinum, RAPIDFIRE Single Platinum, Conventional, Marine, and Outdoor Power Equipment lines depending on your performance needs. Diesel vehicle owners can also get the ACDelco advantage with our high-quality Glow Plugs. ACDelco Professional, premium aftermarket spark plugs fit both GM and non-GM vehicles.
Ac Delco 41-993 Spark Plug
$10.79
68 in stock68 in stock
| Make | Model | Year |
|---|---|---|
| Cadillac | Escalade | 1999 - 2000 |
| Chevrolet | Astro | 1996 - 2005 |
| Chevrolet | Blazer | 1996 - 2005 |
| Chevrolet | C1500 | 1996 - 1999 |
| Chevrolet | C1500 Suburban | 1996 - 1999 |
| Chevrolet | C2500 | 1996 - 2000 |
| Chevrolet | C2500 Suburban | 1996 - 1999 |
| Chevrolet | C3500 | 1996 - 2000 |
| Chevrolet | C3500HD | 1996 - 2000 |
| Chevrolet | Express 1500 | 1996 - 2009 |
| Chevrolet | Express 2500 | 1996 - 2005 |
| Chevrolet | Express 3500 | 1996 - 2002 |
| Chevrolet | K1500 | 1996 - 1999 |
| Chevrolet | K1500 Suburban | 1996 - 1999 |
| Chevrolet | K2500 | 1996 - 2000 |
| Chevrolet | K2500 Suburban | 1996 - 1999 |
| Chevrolet | K3500 | 1996 - 2000 |
| Chevrolet | Lumina | 1991 - 1996 |
| Chevrolet | Monte Carlo | 1995 - 1997 |
| Chevrolet | P30 | 1996 - 1999 |
| Chevrolet | S10 | 1996 - 2004 |
| Chevrolet | Silverado 1500 | 1999 - 2009 |
| Chevrolet | Silverado 1500 Classic | 2007 |
| Chevrolet | Tahoe | 1996 - 2000 |
| GMC | C1500 | 1996 - 1999 |
| GMC | C1500 Suburban | 1996 - 1999 |
| GMC | C2500 | 1996 - 2000 |
| GMC | C2500 Suburban | 1996 - 1999 |
| GMC | C3500 | 1996 - 2000 |
| GMC | C3500HD | 1996 - 2000 |
| GMC | Jimmy | 1996 - 2005 |
| GMC | K1500 | 1996 - 1999 |
| GMC | K1500 Suburban | 1996 - 1999 |
| GMC | K2500 | 1996 - 2000 |
| GMC | K2500 Suburban | 1996 - 1999 |
| GMC | K3500 | 1996 - 2000 |
| GMC | P3500 | 1996 - 1999 |
| GMC | Safari | 1996 - 2005 |
| GMC | Savana 1500 | 1996 - 2009 |
| GMC | Savana 2500 | 1996 - 2005 |
| GMC | Savana 3500 | 1996 - 2002 |
| GMC | Sierra 1500 | 1999 - 2009 |
| GMC | Sierra 1500 Classic | 2007 |
| GMC | Sonoma | 1996 - 2004 |
| GMC | Yukon | 1996 - 2000 |
| Oldsmobile | Bravada | 1996 - 2001 |
| Oldsmobile | Cutlass Supreme | 1991 - 1996 |
| Pontiac | Grand Prix | 1991 - 1996 |
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