Description: Genuine GM Iridium Spark Plug, part number 12681659. This GM OEM iridium spark plug ignites the air-fuel mixture in the combustion chamber, and its iridium fine-wire center electrode delivers a strong, consistent spark with long service life. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12681659 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: Genuine GM Engine Camshaft Position Sensor, part number 12638266. This GM OEM engine camshaft position sensor reads the position of the camshaft and reports it to the engine computer, which uses the signal to time fuel injection and ignition. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12638266 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: Genuine GM Ignition Knock (Detonation) Sensor, part number 12623095. This GM OEM ignition knock (detonation) sensor monitors operating conditions and sends signals to the vehicle's control modules. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12623095 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: 2.5L. Without twin turbo. 2.4L. 3.0L & 3.6L, 3.6L. All. 2.0L turbo. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems - aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type