NGK® 6544 Spark Plug
Manufacturer #6544
NGK® 6544 Spark Plug
Manufacturer #6544
$12.88
$18.03
Save $5.15 (29%)
(117) In Stock
Get it between Wed, Aug 20 - Fri, Aug 22, 2025
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Only secure payments| SKU | NG6544 |
|---|---|
| Brand | NGK® |
| Part Name | Spark Plug |
| Part | # 6544 |
| Quantity Per Vehicle | 1 |
| Pack of | 1 |
| Condition | New |
- PLATINUM TIP GROUND ELECTRODE: Unless OE specified, platinum protection at the ground electrode provides excellent ignitability and service life
- NGK Laser Iridium Spark Plug
- SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
- ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction fine wire iridium alloy center electrode provides consistent performance
- TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
- IRIDIUM ALLOY CENTER ELECTRODE: Iridium's density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
- RECOMMENDED USAGE: Best for vehicles with OE fine wire iridium alloy plugs
- NGK Laser Iridium spark plugs offer the best combination of performance and longevity. Engineered specifically for OE applications, Laser Iridium spark plugs are tested to the highest standards to ensure quality and durability. Iridium tipped center electrode provides durability six times harder than platinum. NGKs high grade pure alumina ceramic and 98 percent pure copper core prevents the spark plug from overheating while providing reliable starts. Most Laser Iridium spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.
| Part Number | Imr9d-9h |
|---|---|
| Stock Number | 6544 |
| Short Style Spark Plug | No |
| Service Number | Imr9d-9h |
| Resistance (82) | 5000.0 |
| Ground Electrode Tip Design | Taper cut |
| Ground Configuration | J-gap |
| Ground Electrode Core Material | Nickel |
| Washer Included | Yes |
| Grade Type | Performance |
| Electrical Terminal Type | Non-removable nut |
| Center Electrode Core Material | Copper |
| Center Electrode Tip Material | Iridium |
| Pre-Gap Size (IN) | .036 |
| Pre-Gap Size (MM) | 0.9 |
| Ground Electrode Quantity | 1 |
| Hex Size | 5/8' (16mm) |
| Insulator Height (IN) | 2.01 |
| Insulator Height (MM) | 51.0 |
| Manufacturer Heat Range | 9 |
| Seat Type | Flat |
| Reach (IN) | 0.750 |
| Reach (MM) | 19.0 |
| Thread Diameter (IN) | 0.394 |
| Thread Diameter (MM) | 10.0 |
| Insulator Material | Ceramic |
| Resistor Type | Yes |
| Skirt Length (IN) | 0.0 |
| Skirt Length (MM) | 0.0 |
| Ground Electrode Tip Material | Platinum |
| Skirt | No |
| Center Electrode Insulator Tip Projection (IN) | 0.08 |
| Center Electrode Insulator Tip Projection (MM) | 2.15 |
| Center Electrode Design | Fine wire |
| Washer Type | Crush |
| Center Electrode Projection | Mid projection |
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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