41-110 Iridium Spark Plugs & M8-48322 Spark Plug Wires for GM V8

Our review looks at the 41-110 iridium spark plugs paired with M8-48322 spark plug wires in an 8-pack, aimed at owners of late 2000s to early 2010s GM V8 trucks and SUVs. The bottom line: this kit delivers dependable ignition performance and a full set of replacement parts for routine maintenance, making it a practical choice for DIY mechanics who need all eight plugs and wires at once. The single biggest reason to consider this kit is convenience combined with improved spark consistency from the iridium plugs, though buyers should inspect the wires on arrival for fit.

Key Features

• Complete 8-piece kit: Includes 8x 41-110 iridium spark plugs and 8x M8-48322 wires so users can replace every cylinder plug and wire in one service session.
• Broad GM compatibility: Listed for many 2007-2014 Chevrolet and GM models so owners of Silverado, Suburban, Avalanche and related vehicles can find matching parts without cross-referencing several numbers.
• Iridium electrode: The iridium construction on the 41-110 plugs offers consistent spark and longer wear life compared with standard copper plugs, improving long-term ignition reliability.
• Multiple replacement numbers: Matches common part numbers such as 12680072, 12609877 and others which helps confirm fitment for engines that accept those references.
• Wires included: The M8-48322 wires complete the ignition service and can reduce ignition misfires when they seat and connect properly to both the coil and plug.

Who It's For

This kit is best for owners of GM V8 trucks and SUVs from roughly 2007 through 2014 who prefer to do a complete ignition refresh themselves and value the longer life of iridium plugs. It is also useful for fleet or shop technicians who want a single SKU that covers all eight cylinders for the listed model years.

Customers who require guaranteed OE wire connectors or who are unsure of exact model-year fitment should verify fitment carefully before purchase; those who prefer original equipment wire construction or OEM branded components may want to compare connector ends and wire styles first.

Pros & Cons

Pros

• Good overall value for a full set that covers both plugs and wires in one package.
• Iridium plugs offer stable spark performance and longer service intervals than conventional plugs.
• Wide compatibility listing reduces the need to buy multiple part numbers for common GM V8 models.
• Convenient for DIYers replacing all eight spark plugs and wires at once.

Cons

• Some customers report issues with the wire quality and connection to the plugs, so inspection and trial fit are recommended.
• Fitment can be mixed for certain model years or specific engine variants, requiring careful verification before installation.

Specifications

Brand	MANUTEX
Spark Plug Part Number	41-110 (also listed as 41110, 41-985)
Spark Plug Wire Part Number	M8-48322 (also listed as 48322, 7831)
Package Contents	8x 41-110 spark plugs, 8x M8-48322 spark plug wires
Compatible Models	Selected 2007-2014 Chevrolet, GMC and Cadillac V8 trucks and SUVs such as Silverado, Suburban, Avalanche, Tahoe, Yukon, Escalade, Corvette
Applicable Engines	V8 LS family engines used in listed model years

Our Verdict

This 41-110 iridium spark plug and M8-48322 wire kit is a practical, cost-effective option for owners of compatible GM V8 trucks and SUVs who want a full ignition service in one purchase. The iridium plugs deliver reliable spark performance and longevity, and the bundled wires simplify replacement, but buyers should inspect wire connectors and confirm fitment for their exact model to avoid installation issues.

Frequently Asked Questions

Do these plugs fit my Silverado 1500?
They are listed for 2007-2013 Silverado 1500 models; verify engine and part cross-reference numbers to ensure exact fit.

Are the wires a direct OEM match?
The wires are replacement M8-48322 parts and match many applications, but some customers have reported connector fit issues so check connectors before final installation.

How many pieces are included?
The package includes 8 spark plugs (41-110) and 8 spark plug wires (M8-48322) for a complete eight-cylinder replacement.