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

4.6/5
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
V-trimmed ground electrode for sharper ignition
0.6mm finewire iridium tip for max fuel efficiency

Description

⚡ Ignite Performance, Extend Your Drive!

  • TRUSTED LEGACY - Backed by Autolite’s 80+ years of expertise and a limited lifetime warranty—quality you can count on.
  • FUEL SMART DESIGN - Optimized electrode design reduces fuel consumption, saving you money and emissions.
  • PRECISION IGNITION - 0.6mm finewire iridium tip with laser welding delivers razor-sharp, consistent sparks for peak engine performance.
  • UNMATCHED LONGEVITY - Engineered to last up to 100,000 miles—drive worry-free longer than ever.
  • UNIVERSAL COMPATIBILITY - Fits all makes and models, domestic or foreign, with platinum-protected ground wire for reliable ignition across ignition systems.

Autolite Iridium XP spark plugs combine cutting-edge 0.6mm finewire iridium technology with a durable V-trimmed ground electrode to deliver up to 100,000 miles of reliable, fuel-efficient ignition. Designed for all vehicle types and backed by a limited lifetime warranty, these spark plugs offer professional-grade performance and longevity trusted since 1936.

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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

4.6

All from verified purchases

B**B

Great deal

price great, functional

T**K

Great product

great product will buy from again

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.

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

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.

F**K

Muy bueno

Quedo perfecto en mi nissan sentra 2017

K**L

Resolve a long time rough idle issue

I had an issue with 1999 Camry having rough idle when in drive mode and stopped either at a stop sign or at red traffic light. The issue does not show up when driving. Since I had replaced sparks plugs this year in January, I was not considering the sparks plug as an issue. So, I replaced fuel filter, air filter, cleaned throttle body and replaced PCV valve without any luck. At last, I ordered these spark plugs and once replaced the rough idle issue has gone forever. Wow now that is a relief since I was working on the issue for 2 weeks without any progress. Now I can relax and focus on something else. So yes, these spark plugs are perfect if you are looking for the same and have any rough idle issue with your car.

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Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

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