what is the proper gap for theese plugs

used them as they came from the box pre gapped at .40 2004 trailblazer . found some extra ponys after putting them in great plugs !!!!

On the top it says in green this fits my Trailblazer and on the bottom it says vehicle service type motorcycle?

I bought this item sometime November of last year and had my mechanic install all six (6) of them on my 04 chevy trailblazer. And upto this day my rig has been running smoothly without any problems. Can’t go wrong with ACDelco.

Will these fit 2011 V6 Camaro

no you will need ACDelco GM Original Equipment 41-109 Iridium Spark Plug

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ACDelco GM Original Equipment 41-103 Iridium Spark Plug

ACDelco GM Original Equipment 41-103 Iridium Spark Plug

Product ID: 2995695

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Details

Brand
GM Parts
Core Material
Iridium
Thread Size
1(mm)
Top Material Type
Iridium
Vehicle Service Type
Car Truck Van

⚡Iridium core for superior spark

🔇Suppressor seal blocks RF interference

🚗Vehicle-specific perfect fit

Description

⚡ Ignite your drive with precision power and flawless performance!

EXACT OEM REPLACEMENT - Guaranteed fit, form, and function for seamless installation and peak performance
PRECISION IRIDIUM CORE - Delivers unmatched durability and high melting point for longer engine life
ENHANCED ENGINE STABILITY - Improves idle smoothness and overall driving experience, making every ride effortless
OPTIMIZED ELECTRODE DESIGN - Smaller, efficient electrodes enable quicker cold starts and smoother acceleration
RADIO FREQUENCY SUPPRESSION - One-piece seal prevents electronic interference, protecting your vehicle’s systems

The ACDelco GM Original Equipment 41-103 Iridium Spark Plug features a high-strength iridium core and advanced electrode design for superior cold starts, smoother acceleration, and enhanced engine idle stability. Its one-piece suppressor seal blocks radio frequency interference, ensuring your vehicle’s electronics stay protected. Designed as an exact OEM replacement, it guarantees perfect fit and reliable performance for cars, trucks, and vans.

Specifications

Brand	GM Parts
Core Material	Iridium
Thread Size	1(mm)
Top Material Type	Iridium
Vehicle Service Type	Car, Truck, Van
Automotive Fit Type	Vehicle Specific Fit
UPC	808709616122
OEM Part Number	12625058
Manufacturer	ACDelco
Model	12681663
Item Weight	1.44 ounces
Product Dimensions	6.7 x 3.9 x 1 inches
Item model number	41-103
Is Discontinued By Manufacturer	Yes
Exterior	Chrome
Manufacturer Part Number	41-103

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