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5.3/Z/v8/flex fuel 5300
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2004 GMC YUKON 5.3 V8 Z Flex Fuel
Spark Plug Part No. Stock No. Plug Gap Photo
V-Power TR5 2238 .040
G-Power TR5GP 3186 .040
Laser Platinum PTR5D-10 * 3784 .040 n/a
OE Laser Iridium IZTR5B11 ^ 1465 .040 n/a
Iridium IX TR5IX 7397 .040
* Laser Series Platinum center electrode, and Platinum pad ground electrode
Oxygen Sensor Part No. Location Note Photo
Oxygen Sensor 21546 Pre-Catalyst Left
Oxygen Sensor 21546 Pre-Catalyst Right
Oxygen Sensor 21546 Post-Catalyst Left
Oxygen Sensor 21546 Post-Catalyst Right