Description:
The ACDelco GM Original Equipment 41-948 Double Platinum Spark Plug is designed, engineered, and tested to meet the rigorous standards required by General Motors. Featuring a copper core center electrode and double platinum pads on both the center and ground electrodes, this spark plug delivers consistent ignition performance and long service life.
The fine-wire center electrode design improves spark efficiency while helping maintain stable voltage requirements and reducing ignition system wear. A one-piece, fired-in suppressor seal blends multiple glass types to create a gas-tight seal that helps regulate spark plug energy, reduce radio frequency and engine interference, and protect against compression pressures.
As a GM Original Equipment component, the 41-948 spark plug represents the same parts installed during vehicle production or validated by General Motors for GM vehicles. Designed for OE fit, form, and function, it helps maintain reliable engine performance and efficient combustion.
Features:
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GM Original Equipment spark plug engineered to GM standards
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Double platinum pads on center and ground electrodes for extended durability
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Fine-wire center electrode for improved spark efficiency
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Copper core center electrode promotes excellent heat transfer
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Fired-in suppressor seal helps reduce radio frequency and engine interference
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Helps regulate spark energy and protect against compression pressures
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Designed for reliable ignition performance and reduced ignition system wear
Product Specifications:
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Part number: 41-948
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Product line: ACDelco GM Original Equipment
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Center electrode design: Fine wire
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Center electrode core material: Copper
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Center electrode tip material: Platinum
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Ground electrode core material: Nickel
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Ground electrode tip material: Platinum
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Ground electrode quantity: 1
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Metal type: Double platinum
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Thread diameter: 14 mm (0.551 in)
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Reach: 17.5 mm (0.689 in)
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Seat type: Tapered
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Hex size: 16 mm
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Resistor type: Yes
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Approximate resistor value: 3–10 kΩ
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Pre-gap size: 0.040 in (1.09 mm)
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Manufacturer heat range: 14
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Core nose length: 0.700 in
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Insulator height: 2.087 in (53 mm)
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Electrical terminal type: Non-removable nut
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Washer included: No
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Package quantity: 4
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Country of origin: United States