Which spark plug will be for a 2014 ram 2500 6.4l hemi a e3.66 or e3.68 ? what is the difference?

We do not make a plug that fits a 2014 Ram 2500 with a 6.4L engine.

No clue , i have a 3.8 v6 in my 2010 jk .

What e3 plug is compatible with the bpr5es plug?

The correct cross over to BPR5ES is E3.46.

Is this $5.99 for one plug or for 4 plugs

For 1 plug. Four plugs would be $23.96.

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E3 Spark Plugs E3.66 Premium Automotive Spark Plug with DiamondFIRE Technology for Hemi Engines, 14mm, 1.000" Reach, Gasket Seat, Pack of 1

Product ID: 1247625

Details

Brand
E3
Core Material
Copper
Gap Size
0.04 Inches
Thread Size
0.546
Top Material Type
Alloy Steel

⚡DiamondFIRE tech for faster combustion

⛽Boosts fuel efficiency & lowers emissions

🔥Colder heat range prevents pre-ignition

$19.40

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Description

⚡ Ignite your engine’s true potential with DiamondFIRE brilliance!

UNLEASH PEAK POWER - Patented DiamondFIRE side-wire electrode delivers faster, more complete combustion for optimized engine output.
BUILT TO LAST GUARANTEED - Backed by a 5-year/100,000-mile warranty for long-term reliability and peace of mind.
DRIVE CLEANER DRIVE SMARTER - Reduces harmful hydrocarbon emissions and carbon buildup, aligning with modern environmental standards.
PRECISION FIT FOR HEMI ENGINES - 14mm thread diameter with 1.000" reach and gasket seat ensures perfect compatibility and performance.
COOLER OPERATION SMOOTHER RIDE - Yttrium-enhanced alloy and colder heat range reduce side-wire temps, preventing pre-ignition and supporting performance mods.

The E3.66 Premium Spark Plug features patented DiamondFIRE technology with a unique side-wire electrode design that enhances combustion efficiency, boosts power, improves fuel economy, and reduces emissions. Engineered with a colder heat range and Yttrium alloy for durability and performance, it fits Hemi engines perfectly with a 14mm thread and 1.000" reach. Backed by a 5-year/100,000-mile warranty, it’s a reliable upgrade for cleaner, more powerful driving.

Specifications

Brand	E3
Core Material	Copper
Gap Size	0.04 Inches
Thread Size	0.546
Top Material Type	Alloy Steel
Vehicle Service Type	Car
Global Trade Identification Number	00894489000664
Automotive Fit Type	Vehicle Specific Fit
UPC	894489000664
OEM Part Number	E3.66
Manufacturer	E3 Spark Plugs
Model	E3.66
Item Weight	3.2 ounces
Product Dimensions	6.55 x 1.7 x 1.45 inches
Country of Origin	China
Item model number	E3.66
Is Discontinued By Manufacturer	No
Manufacturer Part Number	E3.66

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