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Autolite Iridium Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition
limited lifetime replacement
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Product Information
Product Details
Part No. XP3923
Warranty Details (LIMITED LIFETIME REPLACEMENT)
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.
Product Features:
Product Features:
- 0.6 mm finewire design improves ignitability
- Patented V-trimmed platinum sidewire technology resists wear
- OE equivalent design is engineered for every engine
- Designed for better overall durability with virtually no gap erosion
- Double Iridium-Enhanced Alloy Technology Center Electrode: Offers improved durability and wear resistance for a longer-lasting spark plug.
- Designed and Engineered in the USA: Reflects over 100 years of Autolite's engineering experience and expertise.
- Gasket Seat Type: Ensures a secure and proper fit for optimal performance.
Specifications
Center Electrode Core Material:
Platinum
Center Electrode Tip Material:
Iridium
Electrical Terminal Type:
Stud
Ground Electrode Core Material:
Nickel
Ground Electrode Quantity:
1
Ground Electrode Tip Design:
Tapered
Ground Electrode Tip Material:
Platinum
Hex Size:
5/8" in
Pre-Gap Size:
0.044 in
Reach:
19.5 mm
Resistance:
4000
Resistor Type:
Yes
Seat Type:
Flat
Thread Diameter:
14 mm
4.53 out of 5
190 Customer Reviews
87% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
138
4 Stars
32
3 Stars
9
2 Stars
4
1 Star
7
Pros
17
Easy To Install
14
Improves Engine Efficiency
14
Increases Power
9
Durable
5
Lightweight
Cons
152
No
9
(null)
4
Yes
2
No Improvement In Performance
1
Decreases Gas Mileage
Most Liked Positive Review
Good Plugs
I put these in a 1999 Dodge intrepid. I can feel the increase in engine performance. You dont want to just put 2 dollar plugs in your car. Go with the better or best plugs.
Most Liked Negative Review
Not Pleased
I just installed the Autolite Xtreme Iridium plugs and the 19 yr old nissan 3.0 v6 motor developed a rough idle and drop in performance. So yesterday I reinstalled the old plugs and the engine runs quite abit smoother. Oh well..
Reviewed by 190 Customers
Iridium and forget doing it again
Verified Buyer -
I have a 2005 Dodge Magnum R/T 5.7L HEMI. OEM plugs are Champion standard electrode...change every 30,000 miles. Sorry, but I don't have time for that. I put 25,000+ miles or 2.5 hours/6 days a week. So, my point is I need something that will go more than 2 years on my car before I have to change it. Why? Because the awesome HEMI production team wanted 2 spark plugs per cylinder...so NOT 8 plugs but 16. I don't want to change spark plugs every year, bottom line. So I go with a minimum double platinum, or like this plug, iridium. Iridium is the second-densest element (after osmium) and is the most corrosion-resistant metal...on the planet! So I like it HARD, and NON-corrosive. And you should too ;) At least I think so!
Bottom Line Yes, I would recommend to a friend
Good Plugs
Verified Buyer -
I put these in a 1999 Dodge intrepid. I can feel the increase in engine performance. You dont want to just put 2 dollar plugs in your car. Go with the better or best plugs.
Bottom Line Yes, I would recommend to a friend
Good spark plug so far
Verified Buyer -
Spark plugs are working great so far. Seems to run better.
Bottom Line Yes, I would recommend to a friend
Very Good Plug for Decent Price
My car was a little sluggish during acceleration at certain speeds. I replaced the old plugs with cheaper plugs and no change. I replaced the cheaper plugs with these and noticed and increase in response and no more sluggishness. It’s been a month and car is still running great.
Bottom Line Yes, I would recommend to a friend
Rav4 unhappy with Autolite XP Iridium
’03 Rav4 spit and sputtered and refused to perform with this Autolite XP Iridium spark plug that is recommended for Toyotas by the website and the counter sales.A good looking part that gets last place with performance. Try Ford installations rather than foreign on this one.
Bottom Line No, I would not recommend to a friend
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