Autolite Iridium XP Automotive Replacement Spark Plugs, XP3923 (4 Pack)
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Autolite Iridium XP Automotive Replacement Spark Plugs, XP3923 (4 Pack)

4.5/5
Product ID: 29121327
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Details

  • Brand
    Autolite Ultra
  • Core Material
    Iridium
  • Gap Size
    0.04 Inches
  • Thread Size
    5/8"
  • Top Material Type
    Alloy Steel
Up to 100,000 miles extended change interval
Platinum ground wire & V-trimmed electrode for optimal ignition
0.6mm finewire iridium tip for max fuel efficiency

Description

⚡ Ignite Performance, Extend Your Drive!

  • TRUSTED HERITAGE - Backed by Autolite’s legacy since 1936, ensuring reliability and OE-level quality.
  • FUEL SMART DESIGN - Laser-welded iridium tip maximizes fuel efficiency, helping you save on every mile.
  • PRECISION IGNITION - 0.6mm finewire iridium center electrode delivers sharper, more consistent sparks for superior engine performance.
  • UNMATCHED LONGEVITY - Engineered to last up to 100,000 miles, reducing maintenance frequency and downtime.
  • ADVANCED CONSTRUCTION - Platinum-protected ground wire and V-trimmed electrode optimize ignitability across all ignition systems.

The Autolite Iridium XP3923 spark plugs feature a 0.6mm finewire iridium tip and platinum-protected ground wire, engineered for up to 100,000 miles of reliable, fuel-efficient performance. Designed with advanced laser welding and V-trimmed electrodes, these plugs deliver sharper ignition and optimal durability, trusted by professionals since 1936.

Specifications

BrandAutolite Iridium Ultra
Core MaterialIridium
Gap Size0.04 Inches
Thread Size5/8"
Top Material TypeAlloy Steel
Vehicle Service TypeUTV
Global Trade Identification Number00009100044334
Automotive Fit TypeVehicle Specific Fit
UPC009100044334
ManufacturerFRAM
ModelXP3923-4PK
Item Weight6.7 ounces
Product Dimensions3.38 x 4 x 1 inches
Item model numberXP3923-4PK
Is Discontinued By ManufacturerNo
ExteriorChrome
Manufacturer Part NumberXP3923-4PK
Special FeaturesFinewire design, Limited Lifetime Warranty

Have a Question? See What Others Asked

where does one find a 3/8 inch spark plug socket socket? I can only find 5/8 inch and larger.
will this fit 2004 dodge ram 1500 4.7 liter 4x4 v8?
Will these spark plugs fit 2003 Altima 2.5
Where are these made?

Reviews

4.5

All from verified purchases

R**.

Rendimiento superior y durabilidad garantizada

Recientemente reemplacé las bujías de mi coche con estas Autolite Iridium XP y estoy realmente impresionado con la diferencia. Desde el primer momento, noté una mejora significativa en el rendimiento del motor. La aceleración es más suave y la respuesta del acelerador es mucho más rápida.Lo que más me atrajo de estas bujías fue la promesa de durabilidad gracias al electrodo central de iridio y el electrodo de tierra de aleación de platino. Parece que están construidas para durar, lo que a la larga significa un ahorro al no tener que reemplazarlas con tanta frecuencia.La instalación fue sencilla, ya que son bujías de repuesto directo para mi vehículo (es importante verificar la compatibilidad con tu modelo antes de comprar). El empaque también era adecuado y protegió las bujías durante el envío.He notado una marcha más suave del motor, una ligera mejora en la eficiencia del combustible (aunque esto puede variar según el vehículo y las condiciones de conducción) y, en general, una sensación de mayor potencia.Si estás buscando unas bujías de repuesto de alta calidad que ofrezcan un rendimiento superior y una larga vida útil, las Autolite Iridium XP son una excelente opción. ¡Estoy muy satisfecho con mi compra y las recomiendo sin dudarlo! ¡Cinco estrellas!

A**R

Still working June 2025.

Easy repair.

B**B

Great deal

price great, functional

C**R

Definitely not pre gapped

Definitely not pre gapped most of them were .40-45Had to adjust to .27-.28 for Chevy Sonic 2014 1.8L

F**K

Muy bueno

Quedo perfecto en mi nissan sentra 2017

J**T

Funciona bien

Me funcionaron bien

C**E

Working flawlessly in the Subaru I installed them in one year later.

These plugs are working flawlessly in the Subaru I installed them in one year later. No issues of any kind. Great product. I would recommend them to anyone looking to do a spark plug swap.

J**

Exelente producto

Buen precio y muy buena calidad, buen tiempo de entrega

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Autolite Iridium Xp Automotive Replacement Spark Plugs Xp3923 4 Pack | Desertcart Italy