Mack Trucks will now offer the Mack ImpactShield, a windshield made with Corning Fusion5 Glass, as standard equipment on the all-new Mack Granite vocational trucks starting later this year.
The Impact Shield windshield will be on all new Mack Granite vocational trucks later this year.
Credit: Mack Trucks
3 min to read
The Mack ImpactShield, the first-ever use of Corning Fusion5 Glass in a Class 8 heavy-duty truck, is now standard on the all-new Mack Granite. Mack Trucks said the ImpactShield delivers a significant advancement in windshield durability, damage resistance, and total cost of ownership.
The all-new Mack Granite was unveiled at CONEXPO-CON/AGG 2026. It represents a complete reimagining of Mack’s legendary vocational truck featuring an all-new galvanized steel cab, industry-leading safety technologies including 270-degree radar coverage and Electronic Park Brake (ePark Brake) with rollaway protection, and a driver-centric interior developed with input from professional drivers.
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The ImpactShield windshield, with its one-piece bonded curved design, is a natural extension of Mack’s commitment: a component built to the same standard as the truck around it.
Designed to Withstand Impact Strikes
Corning Fusion5 Glass is the world’s first glass engineered specifically for automotive exterior applications, designed to withstand sharp impact strikes and resist damage in demanding operating environments.
For Class 8 truck applications, in which vehicles face constant exposure to road debris, extreme temperatures, and harsh jobsite conditions, the technology helps protect drivers and reduce maintenance costs.
Compared with a standard Class 8 windshield, the Mack ImpactShield delivers measurable performance advantages:
2x better sharp impact resistance
2x better thermal shock resistance
5x better scratch resistance,
Improved resistance to environmental wear and weathering
Weight reduction
Improved defrost performance
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“Mack customers don’t have time for unplanned stops, and neither do we,” said Tim Wrinkle, vice president, product owner, vocational and medium duty at Mack. “Partnering with Corning to bring Fusion5 Glass to heavy-duty trucking isn’t just about using better materials; it’s about finding every possible way to keep our customers’ trucks on the job and their costs under control.”
Increased Uptime
The Mack ImpactShield’s one-piece bonded curved windshield design provides improved durability and impact resistance compared with conventional glass, supporting Mack’s commitment to maximum uptime in challenging work environments.
Reduced windshield damage means fewer unplanned service events and lower glass replacement costs over the life of the vehicle, offering a tangible return on investment for fleet operators.
Corning Gorilla Glass Collaboration
Corning, makers of Corning Gorilla Glass, bring more than 100 years of automotive materials science expertise to the collaboration, working alongside Mack and other OEMs to address their most demanding technical challenges.
“Corning Fusion5 Glass represents a significant advancement in automotive glazing solutions, addressing a real-world problem of breakage, while providing real economic benefits to customers,” said Mike Kunigonis, vice president and general manager, Corning Automotive Glass Solutions. “Introducing this technology with Mack demonstrates our relentless commitment to helping solve customers’ toughest challenges, now including those in the heavy-duty truck market.”
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Available Later This Year
The Mack ImpactShield windshield featuring Corning Fusion5 Glass is standard on the all-new Mack Granite, which will be available for order in the latter half of 2026, with production beginning in January 2027 at Mack’s Lehigh Valley Operations facility in Macungie, Pennsylvania. Customers can also choose a one-piece curved Mack Aero windshield.
Mack ImpactShield technology will also be available as an upgrade to Mack’s Aero windshield on the Mack Pioneer, all-new Mack Anthem, and Mack Keystone models.
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