Radiator for Acura TLX (2015-2020) 2.4L 3.5L

Direct-Fit Replacement Radiator for 2015-2020 Acura TLX (UB1/UB2/UB3)

What it Does: The replacement radiator restores OE heat dissipation efficiency for the 2015-2020 Acura TLX to prevent engine overheating and catastrophic head gasket failure.

The Stock Acura TLX Radiator Weakness

Over time, the factory radiator on the UB1 (2.4L) and UB2/UB3 (3.5L) chassis degrades due to intense thermal cycling and vibration. The factory glass-filled nylon end tanks become brittle, developing micro-cracks along the crimped tank-to-core seam. Furthermore, galvanic corrosion and road debris cause external fin degradation and internal tube clogging, leading to elevated coolant temperatures during idle or heavy load. Left unaddressed, loss of coolant pressure leads to localized boil-over, cylinder head warping, and blown head gaskets on both inline-four and V6 platforms.

The Engineering Solution

This replacement radiator is built to exact Denso-type dimensional specifications, featuring an efficient 29-3/8 inch by 15-5/8 inch brazed aluminum core with a 5/8-inch thickness. High-density, multi-louvered cooling fins maximize ambient airflow exposure across the 1-row passage design to accelerate thermal transfer. The reinforced, heat-stabilized composite polymer tanks are precision-crimped over virgin synthetic rubber gaskets to ensure a leak-free seal under standard operating pressure. Featuring OE-matched 1.31-inch inlet and outlet ports, it drops cleanly into the factory mounting brackets without requiring hose modifications or shroud trimming.

What's Included

• 1 Radiator

Technical Specifications

Compatibility

• 2015-2020 Acura TLX Base 2.4L L4 (K24W7)
• 2015-2020 Acura TLX Base 3.5L V6 (J35Y6)
• 2015-2020 Acura TLX SH-AWD 3.5L V6 (J35Y6)
• 2018-2020 Acura TLX A-Spec 2.4L L4 (K24W7)
• 2018-2020 Acura TLX A-Spec 3.5L V6 (J35Y6)

Frequently Asked Questions & Fitment Warnings

Does this fit the UB1, UB2, and UB3 TLX?

Yes, this is a direct fit for the 2015-2020 Acura TLX equipped with either the K24W7 2.4L or J35Y6 3.5L engine. Note that this unit does not feature integrated transmission or engine oil coolers, matching vehicles utilizing external cooling heat exchangers.

Do I need to bleed the cooling system after installing this radiator?

Yes, thorough burping of the cooling system using an air-bleed funnel is necessary to prevent air pockets from causing erratic temperature spikes and heater core lockups.

The Acura Engineering Standard

Engineered for high-revving VTEC powerplants, this radiator delivers exact thermal equilibrium and pressure retention to preserve engine reliability on spirited highway runs and stop-and-go commutes alike.