A-Premium 34" Engine Coolant Radiator for GM Trucks & SUVs — 2 Brass Transmission Cooler Ports, Direct-Fit 34" Core

The A-Premium 34" engine coolant radiator with two brass transmission oil cooler ports is a direct-fit replacement built to restore proper cooling and keep automatic-transmission GM trucks and SUVs running at the right temperature.

If your Chevrolet, GMC, Cadillac or Hummer with an automatic transmission needs a full-width radiator replacement, this A-Premium unit matches original-equipment dimensions and adds two brass transmission cooler ports for integrated ATF cooling. It’s made to the factory core height and thickness so installation is straightforward for models listed in the fitment. Before ordering, verify your vehicle’s transmission type and port configuration to ensure compatibility.

Which vehicles does this radiator fit?

This radiator is designed for a broad range of GM trucks and SUVs from late 1990s through mid-2010s that use automatic transmissions. It covers many Chevrolet and GMC Silverado and Suburban models plus Tahoe, Avalanche, Yukon, Cadillac Escalade variants, and Hummer H2 where the original equipment used a two-port transmission cooler.

• Covers Chevrolet Avalanche 2007–2013, Silverado 1500/2500/3500 ranges, Suburban 1500/2500, Tahoe 2000–2014.
• Fits GMC Sierra 1500/2500/3500, Yukon/Yukon XL 1500/2500, and many Sierra HD years.
• Also compatible with Cadillac Escalade (2002–2014 variants) and Hummer H2 (2003–2009).
• Check OE reference numbers (e.g., 2423, CU2423, 15193108, 52486595) to confirm exact match.

How do the dimensions and ports compare to my original radiator?

The A-Premium radiator follows common OE sizing so it installs where a 34" core is required. Key measurements and port diameters are provided to help you confirm fitment against your vehicle’s original part.

• Core height: 34 inches; core width: 17.25 inches; core thickness: 1.25 inches.
• Transmission oil cooler: equipped with two brass ports — intended for automatic transmission models only.
• Inlet diameter: 1.31 inches; outlet diameter: 1.56 inches — verify hose sizes on your vehicle.
• Not fitted with an engine oil cooler and does not include a 4-port configuration.

What are the practical benefits of choosing this replacement radiator?

Replacing a worn or leaking radiator with a direct-fit unit restores engine and transmission cooling, helps prevent overheating, and reduces downtime. The integrated brass transmission ports let your ATF circulate through the radiator for temperature control without aftermarket adapters.

• Direct-fit dimensions speed up installation and avoid modification of mounting points.
• Two brass transmission ports provide durable ATF connections and corrosion resistance.
• Built to match OE core thickness and height for consistent cooling performance.
• Suitable for repair shops and DIYers replacing radiators on compatible GM vehicles.

What should I verify before buying and installing?

Because GM used several radiator and cooler configurations across model years and trims, confirming a few vehicle details prevents returns and fitment issues. Make sure the radiator’s features align with your vehicle’s original equipment.

• Confirm your vehicle is an automatic-transmission model; this radiator is for automatic-only setups.
• Verify the original used two transmission cooler ports, not a four-port or integrated engine oil cooler.
• Match reference numbers or compare inlet/outlet diameters and core dimensions to the removed radiator.
• Have mounting bracket locations and hose clearances checked during installation.

Who this is for: A-Premium’s 34" radiator with dual transmission oil cooler ports is aimed at owners and technicians working on compatible Chevrolet, GMC, Cadillac, and Hummer automatic-transmission trucks and SUVs who need a reliable, OE-dimension replacement. It’s best for vehicles that require a 34" core height and two transmission cooler ports, for drivers who want a direct-fit swap without custom plumbing or performance modifications.