Radiator for Honda Odyssey (2005-2010) 3.5L

Direct-Fit Replacement Radiator for 2005-2010 Honda Odyssey (RL3/RL4)

What it Does: The replacement radiator restores peak thermal dissipation for the 2005-2010 Honda Odyssey to prevent engine overheating and protect critical internal components.

The Stock Honda Odyssey Radiator Degradation

Factory radiators in the RL3 and RL4 chassis succumb to repeated thermal cycling over time. The OEM PA66 plastic end tanks become brittle from constant exposure to coolant temperature swings and pressurized ethylene glycol, leading to hairline stress fractures along the crimped header plate seals. Concurrently, internal scale build-up and external fin degradation impede heat transfer across the single-row core, compromising coolant flow for the J35A6 and J35A7 engines under heavy passenger loads or stop-and-go driving.

The Engineering Solution

This direct-fit radiator features a high-grade aluminum heat exchange core paired with high-density louvered multi-louver fins, engineered to maximize ambient airflow contact and accelerate thermal rejection. Reinforced polyamide composite end tanks are mechanically crimped with vulcanized gaskets to guarantee pressure retention under operating pressures exceeding factory specifications. Integrated with a built-in internal transmission oil cooler, it ensures exact fluid temperature stability for automatic transmissions, dropping straight into factory rubber isolators without modification. Interchangeable with OEM reference numbers 2806, CU2806, and 41-2806A.

What's Included

• 1 Complete Radiator Assembly with Integrated Transmission Oil Cooler

Technical Specifications

Compatibility

• 2005 Honda Odyssey 3.5L V6 (LX, EX, EX-L, Touring)
• 2006 Honda Odyssey 3.5L V6 (LX, EX, EX-L, Touring)
• 2007 Honda Odyssey 3.5L V6 (LX, EX, EX-L, Touring)
• 2008 Honda Odyssey 3.5L V6 (LX, EX, EX-L, Touring)
• 2009 Honda Odyssey 3.5L V6 (LX, EX, EX-L, Touring)
• 2010 Honda Odyssey 3.5L V6 (LX, EX, EX-L, Touring)

Frequently Asked Questions & Fitment Warnings

Does this fit the RL3/RL4 Odyssey?

Yes, this is a direct fit for the 2005-2010 Honda Odyssey equipped with the J35A6 or J35A7 3.5L V6 engine.

Do I need to bleed the cooling system after replacement?

Yes, bleeding air pockets completely using an elevated spill-free funnel is required after refill to avoid thermal airlocks around the cylinder heads.

The Honda Caliber

Engineered for sustained family hauling and long-distance highway duty, this radiator provides the robust cooling efficiency and heat dissipation required to keep your J-series engine running reliably under full gross vehicle weight.