Frequently Asked Questions About Volvo VNL Gen III Radiators

What years and models are compatible with these Gen III radiators?

These radiators are specifically designed for Volvo VNL trucks manufactured from 2018 to present (Gen III models). They fit VNL 300, 400, 640, 740, and 860 series trucks. Always verify your VIN and engine type before ordering, as radiator configurations can vary based on engine options like D11, D13, or D16 engines. The Gen III radiators are not compatible with pre-2018 VNL models due to different mounting points and core dimensions.

What's the difference between plastic tank and all-aluminum radiators for my VNL?

Plastic tank radiators are the OEM standard and typically cost less upfront, but the plastic end tanks can crack over time, especially in extreme temperatures. All-aluminum radiators offer superior durability and heat dissipation, lasting 2-3 times longer than plastic tank versions. While aluminum radiators cost more initially, they reduce long-term replacement costs and minimize breakdown risks. Most drivers report better cooling performance with aluminum units, particularly when hauling heavy loads or operating in hot climates.

How difficult is the installation, and what tools do I need?

Installation typically takes 2-4 hours for experienced mechanics and 4-6 hours for DIY installations. You'll need basic hand tools, a coolant drain pan, and potentially a radiator pressure tester. The main challenges include properly aligning the mounting brackets, reconnecting the transmission cooler lines without cross-threading, and ensuring all electrical connections for fan controls are secure. Many customers recommend having a second person help position the radiator during installation. Always replace the thermostat and radiator cap when installing a new radiator.

Why are there different row configurations, and which one do I need?

Row configuration refers to the number of cooling tube rows in the radiator core. Standard VNL Gen III radiators come in 2-row, 3-row, and 4-row configurations. More rows provide increased cooling capacity. Most standard applications use 2-row radiators, while heavy-haul operations, mountainous routes, or trucks with larger engines typically require 3 or 4-row units. Check your current radiator's part number or consult your truck's build sheet to determine the correct row configuration. Upgrading to more rows can help if you're experiencing overheating issues.

What warranty coverage should I expect, and what voids it?

Quality aftermarket radiators typically carry 1-2 year warranties, while premium brands may offer up to 3 years. Warranties generally cover manufacturing defects, leaks, and premature failure under normal use. Common warranty exclusions include damage from improper installation, running without coolant, using incorrect coolant types, physical damage from road debris, and modifications to the radiator. Always flush your cooling system before installation and use only manufacturer-recommended coolant to maintain warranty coverage. Keep your receipt and installation records for any warranty claims.