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Q: Do they work efficiently on 2005 5.7 v8 hemi engines made by chrysler? 05 hemi v8s are known to have champion copper plus spark plugs proclivity. t.y.

Hi Edward: Bosch (9654) work for the 2005 Chrysler 5.7 V8 hemi engine. They are fine wire double Iridium lasting up to 4x longer than the copper plugs. Iridium and platinum are not as efficient or conductive as copper, and both of these metals are prone to overheating. As long as they do not overheat, they do last longer than copper spark plugs. Although copper has the shortest lifespan, it is generally considered the best material for a central electrode because of its excellent conductivity.

Q: What is the difference between the Bosch 9654 and 9664?

One is prolly hotter/cooler than the other and or is more/less protruding into the combustion chamber than the other. Best advice: follow the recommendations on the application charts.

Q: Will these work in a 03 Dodge Ram with a 5.7L hemi

Yes they will work on your 03 Dodge Ram 5.7L Hemi. I personally would stick with the original spark plug manufacturer that your truck came with (Champion). They also have Iridium plugs (9403 Champion Iridium).

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Do they work efficiently on 2005 5.7 v8 hemi engines made by chrysler? 05 hemi v8s are known to have champion copper plus spark plugs proclivity. t.y.

What is the difference between the Bosch 9654 and 9664?

Will these work in a 03 Dodge Ram with a 5.7L hemi

is $5.00 for one plug or a pack? How many in a pack?

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Product Dimensions	10.67 x 10.41 x 2.54 cm; 22.68 g
Item model number	9654_1
Manufacturer Part Number	9654
OEM Part Number	9654
Assembly Required	No
Item Weight	22.7 g

Bosch 9654 Double Iridium Spark Plug, up to 4X Longer Life (Pack of 1)

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