Autolite® 303 Spark Plug
Manufacturer #303
Autolite® 303 Spark Plug
Manufacturer #303
$4.02
$5.63
Save $1.61 (29%)
(9) In Stock
Get it between Wed, Aug 20 - Fri, Aug 22, 2025
E.P.A. Compliant Converters are not legal for sale or use in California or Colorado. Restrictions apply in New York and Maine.
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Only secure payments| SKU | AB303 |
|---|---|
| Brand | Autolite® |
| Part Name | Spark Plug |
| Part | # 303 |
| Quantity Per Vehicle | 1 |
| Pack of | 1 |
| Condition | New |
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Chevrolet
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Dodge
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Gmc
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International
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Plymouth
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Pontiac
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Zundapp
- Autolite 303 Copper Spark Plug
- Autolite® Copper spark plugs are engineered to deliver quick starts and the power your vehicle or applications needs to meet performance expectations.
- The copper core center electrode aids in thermal control and improves resistance to fouling.
- Its specially engineered high nickel alloy center and ground electrode provides extended life.
- The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
- Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
| Center Electrode Core Material | Copper |
|---|---|
| Center Electrode Insulator Tip Projection (MM) | 0.99 |
| Center Electrode Insulator Tip Projection (IN) | 0.039 |
| Center Electrode Projection | Short projection |
| Center Electrode Tip Material | Nickel |
| Core Nose Length (MM) | 12.8 |
| Core Nose Length (IN) | 0.504 |
| Electrical Terminal Type | Removable nut |
| Grade Type | Regular |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Quantity | 1 |
| Ground Electrode Tip Design | Standard |
| Ground Electrode Tip Material | Nickel |
| Hex Size (IN) | 13/16 |
| Hex Type | Hex |
| Indexed | No |
| Insulator Height (IN) | 2.327 |
| Insulator Height (MM) | 59.11 |
| Insulator Material | Ceramic |
| Manufacturer Heat Range | 8 |
| Pre-Gap Size (IN) | 0.034 |
| Pre-Gap Size (MM) | 0.86 |
| Reach (IN) | 0.374 |
| Reach (MM) | 9.5 |
| Resistance (82) | 5000 |
| Resistor Type | Yes |
| Seat Type | Flat |
| Skirt | Yes |
| Skirt Length (MM) | 17.09 |
| Skirt Length (IN) | 0.673 |
| Thread Diameter (MM) | 14 |
| Washer Included | Yes |
| Washer Type | Flat |
Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.
Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund.
Warranty Policy
Right parts, guaranteed. If you find any defects, simply notify us within the warranty period, and we’ll take care of it. Check out our Warranty Policy for more details.
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