Do i need anti-seize lubricant with these spark plugs?

You definitely should use antiseize. Anyone who tells you different doesn't know what they're talking about. GM tech for 20 years, and I never installed a spark plug without antiseize, ever! It's even more crucial in an aluminum head.

Will these work for 2014 chevy silverado ltz 5.3?

I have a 2014 5.3 LT and they fit my silverado. Check with a local parts store if your not sure.I bought a replacement plug at sanels.

Will this work on a 2007 Chevy avalanche

Have to check gms part number for that year

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⚡ Ignite your drive with precision-engineered power!

OEM VALIDATED QUALITY - Backed by General Motors, designed specifically for Chevrolet, Buick, GMC, and Cadillac vehicles.
ADVANCED CARBON BURN OFF - Self-cleaning electrode tip reduces carbon buildup, maintaining peak engine performance.
OPTIMIZED SPARK EFFICIENCY - Fine-wire electrode design ensures quick acceleration and reliable cold starts every time.
PRECISION ENGINEERED IRIDIUM CORE - Experience unmatched durability and high melting point for long-lasting performance.
ELECTRONICS FRIENDLY SUPPRESSOR SEAL - Blocks radio frequency interference to protect your vehicle’s sensitive electronics.

The ACDelco GM Original Equipment 41-114 Iridium Spark Plug delivers superior engine idle stability and quick acceleration through its fine-wire iridium electrode. Designed and rigorously tested by GM engineers, it features a one-piece suppressor seal to block radio frequency interference and a self-cleaning tip to reduce carbon deposits, ensuring long-lasting, reliable performance for your GM vehicle.

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Brand	ACDelco
Core Material	Iridium
Thread Size	16mm
Top Material Type	Iridium
Vehicle Service Type	Motorcycle
UPC	808709061304
OEM Part Number	12622441
Manufacturer	ACDelco
Model	12622441
Item Weight	1.44 ounces
Product Dimensions	4.4 x 3.5 x 1 inches
Item model number	41-114
Is Discontinued By Manufacturer	No
Exterior	Polished
Manufacturer Part Number	12622441

ACDelco GM Original Equipment 41-114 (12622441) Iridium Spark Plug (Pack of 1)

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