where does one find a 3/8 inch spark plug socket socket? I can only find 5/8 inch and larger.

Unless these are somehow the tiniest spark plugs in existence, you do not need a 3/8” socket. 5/8” will be the correct socket size and 3/8” will be the size of the ratchet attachment on the other end of the socket. 3/8” is about 10 mm which is smaller than the threads on this plug.

will this fit 2004 dodge ram 1500 4.7 liter 4x4 v8?

No, these Autolite XP3923 spark plugs fit 2002-2005 Dodge Ram 1500 (3.7L). Autolite XP5224 will fit 2002-2007 Dodge Ram 1500 (4.7L V8).

Will these spark plugs fit 2003 Altima 2.5

Hello, no these will not fit a Altima. Ngk are the original part number 6240. Please let us know if we can be of further assistance.

Where are these made?

Autolite Iridium XP spark plugs are designed and engineered in the USA. However, they are manufactured in China - as are all Autolite spark plugs.

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Autolite Spark Plug Autolite Iridium Xp Spark Plug , Neutral , Pack of 4 , XP3923-4PK

Product ID: 278520763

Details

Brand
Autolite Ultra
Core material
Iridium
Thread size
14mm
Top material type
Alloy Steel
Vehicle service type
UTV

⏳Up to 100,000 miles extended change interval

⚡Platinum protected ground wire for optimal ignition

⛽0.6mm finewire iridium tip for max fuel efficiency

E£ 2651

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Description

⚡ Ignite your drive with precision and power — don’t get left behind!

TRUSTED LEGACY - Backed by Autolite’s 80+ years of expertise and a limited lifetime warranty for peace of mind.
PRECISION IGNITION - 0.6mm finewire iridium tip with laser welding ensures sharper, more consistent sparks for superior fuel economy.
UNMATCHED LONGEVITY - Engineered to last up to 100,000 miles, reducing maintenance frequency and cost.
OPTIMIZED PERFORMANCE - V-trimmed ground electrode and platinum protection deliver enhanced ignitability and smoother engine response.
UNIVERSAL COMPATIBILITY - Designed to fit all makes and models, domestic and foreign, making upgrades effortless.

The Autolite Iridium XP Spark Plug pack of 4 features advanced 0.6mm finewire iridium tips and platinum-protected ground wires, engineered in the USA for up to 100,000 miles of reliable performance. Compatible with all vehicle types, these spark plugs optimize fuel efficiency and ignition consistency, backed by Autolite’s trusted legacy and a limited lifetime warranty.

Specifications

ASIN	B009J58FJA
Automotive Fit Type	Universal Fit
Best Sellers Rank	#99,838 in Automotive ( See Top 100 in Automotive ) #642 in Automotive Performance Spark Plugs
Brand Name	Autolite Iridium Ultra
Compatible with Vehicle Type	UTV
Core Material	Iridium
Country of Publication	Mexico
Customer Reviews	4.6 4.6 out of 5 stars (2,549)
Gap Size	0.04 Inches
Global Trade Identification Number	00009100044334
Included Components	4 Iridium Spark Plugs
Item Type Name	Spark Plug
Manufacturer	FRAM
Manufacturer Part Number	XP3923-4PK
Manufacturer Warranty Description	Lifetime Limited Warranty
Model Number	XP3923-4PK
Number of Items	4
OEM Equivalent Part Number	XP3923-4PK
Thread Size	14mm
Top Material Type	Alloy Steel
UPC	009100044334
Unit Count	4 Count

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E£ 2651

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to EGYPT.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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