Why is there such a high price of $107.17 versus Advance Auto , $59.94 ?

Because they don’t know a hemi has 16 spark plugs or they aren’t selling you the same plugs. The NGK number is 4469

What is the Part number on the spark plug? mark

LFR5AIX-11. STOCK # 4469 I HAVE A 2015 RAM 1500 5.7L AND THEY WORK GREAT

Will they fit my 2015 ram 2500 6.4 hemi

Not sure, they fit perfect on the 5.7 hemi

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Sixity Auto 16 pc NGK Iridium IX Spark Plugs compatible with Ram 1500 5.7L V8 2011-2021

Product ID: 512466008

Details

Brand
Sixity Auto
Core material
Iridium
Thread size
M14x1.25
Top material type
Metal
Vehicle service type
Truck

⚡0.6mm ultra-fine iridium tip

🔥Sharper spark for faster ignition

⏱️40,000-60,000 mile lifespan

10203162₫

Duties & taxes included

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Ignite your HEMI’s true potential—because every mile deserves a spark that never quits.

OPTIMIZED COMBUSTION - Advanced center and ground electrodes ensure complete combustion, reducing misfires and emissions for a cleaner, stronger engine.
NGK QUALITY ASSURANCE - Crafted by Sixity Auto with genuine NGK technology, the world leader in spark plug innovation—join the elite drivers who demand the best.
PRECISION IRIDIUM TIP - Ultra-fine 0.6mm iridium tip sharpens throttle response and acceleration for that instant power surge.
DURABILITY YOU CAN TRUST - Robust shell design protects against damage, maintaining spark integrity and reliability mile after mile.
LONG LASTING PERFORMANCE - Engineered to deliver 40,000-60,000 miles of consistent, high-efficiency sparking—keep your HEMI roaring longer.

The Sixity Auto 16 pc NGK Iridium IX Spark Plugs are precision-engineered for Ram 1500 5.7L V8 HEMI trucks (2011-2021). Featuring an ultra-fine 0.6mm iridium tip, these plugs deliver sharper throttle response and acceleration, with a durable design that supports 40,000-60,000 miles of reliable performance. Advanced electrode technology ensures efficient combustion, reduced misfires, and lower emissions, backed by trusted NGK quality for professional-grade ignition.

Specifications

ASIN	B082812TZC
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#47,393 in Automotive ( See Top 100 in Automotive ) #263 in Automotive Performance Spark Plugs
Brand Name	Sixity Auto
Compatible with Vehicle Type	Truck
Core Material	Iridium
Customer Reviews	4.8 4.8 out of 5 stars (560)
Gap Size	1.12 Millimeters
Item Weight	1.92 Pounds
Manufacturer	Sixity Auto
Manufacturer Part Number	4024123628
Model Number	4024123628
Number of Items	16
Thread Size	M14x1.25
Top Material Type	Metal
Unit Count	16 Count

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