The Assenmacher Specialty Tools FZ402 Coolant Tank Adapter is a professional-grade specialty tool designed to facilitate coolant system service on a broad range of modern vehicles, including hybrid, electric, and supercharged platforms. Engineered to interface directly with coolant surge tanks and reservoirs, this adapter simplifies the bleeding, filling, and pressure-testing process for technicians working on complex cooling systems. Its compatibility with an extensive list of GM, Chrysler, Jeep, Ford, Honda, and other makes makes it an essential addition to any professional service bay. Built to the exacting standards of Assenmacher Specialty Tools, the FZ402 delivers reliable performance across a wide model range spanning model years 2011 through 2026.
Features
Designed to adapt to coolant surge tanks and reservoirs for efficient coolant system service
Compatible with hybrid, plug-in hybrid, battery electric, and supercharged vehicle cooling systems
Broad vehicle application coverage spanning multiple domestic and import manufacturers
Supports service on GM Duramax fuel cooler coolant surge tanks (2020-2026)
Compatible with Ford Supercharger Intercooler Reservoir applications
Professional specialty tool construction built to Assenmacher Specialty Tools quality standards
Specifications
Manufacturer: Assenmacher Specialty Tools
Part Number: FZ402
Tool Type: Coolant Tank Adapter
Application: Coolant system service (filling, bleeding, pressure testing)
Includes
1x Coolant Tank Adapter (FZ402)
Vehicle Applications
Acura: ZDX 2024-2025
Alfa Romeo: Tonale 2025-2026
Cadillac: ELR Coupe 2016, Escalade 2021-2025, Escalade ESV 2021-2025
Chevrolet: Bolt 2017-2023, Malibu Hybrid 2016-2019, Silverado 1500 2024-2025, Silverado 2500 HD 2020-2026, Silverado 3500 HD 2020-2026, Spark 2014-2016, Suburban 2021-2025, Tahoe 2021-2025, Volt 2011-2019
Chrysler: Pacifica Hybrid 2017-2026, Voyager 2020-2026
Fiat: 500e 2024
Ford: Supercharger Intercooler Reservoir
GM: Duramax Fuel Cooler Coolant Surge Tank 2020-2026
GMC: Sierra 1500 2024-2025, Sierra 2500 HD 2020-2026, Yukon 2021-2025, Yukon XL 2021-2025
Honda: Prologue 2024-2025
Jeep: Compass 2023-2025, Grand Cherokee 4xe 2022-2023, Wagoneer S 2025, Wrangler 3.6L eTorque (48V) 2020-2022, Wrangler 4xe 2021-2025
RAM Trucks: 1500 3.0L I6 Turbo (Hurricane) 2025-2026, 1500 3.6L eTorque (48V) 2019-2025, 1500 TRX 6.2L Supercharged 2021-2023
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