19504-RAA-A00 Engine Coolant Bypass Hose for Honda Accord CR-V Civic 2.4L 2003-2015

◆ This engine coolant bypass hose is a direct replacement for the original Honda unit, designed to route coolant through the bypass circuit during engine warm-up and normal operation.

◆ The OEM reference number is 19504-RAA-A00. Honda’s catalog designates this component as “Hose, Bypass Inlet” or “Engine Coolant Bypass Hose” .

◆ The hose is engineered to OEM standard dimensions, with item dimensions of approximately 10.4 x 1.0 x 1.0 inches and a weight of about 0.70 pounds .

◆ It is primarily designed for Honda vehicles equipped with the 2.4L L4 engine, with confirmed fitment covering the Accord (2003–2012), CR-V (2007–2015), Civic Si (2012–2015), Crosstour (2012–2015), and Element (2007–2011) .

◆ This product is a coolant bypass hose manufactured to meet original quality standards for coolant flow, fit, and durability.

◆ Part Number: 19504-RAA-A00

◆ Component Type: Engine Coolant Bypass Hose / By-Pass Inlet Hose

◆ Vehicle Make: Honda

◆ Engine Compatibility: 2.4L L4

◆ Dimensions: Approx. 10.4 x 1.0 x 1.0 inches

◆ Weight: Approx. 0.70 lbs

◆ Placement: Bypass circuit (water pump / inlet)

◆ Other Names: By-Pass Hose, Inlet Hose

◆ Note: Clamps and mounting hardware are typically separate components

◆ OEM Standard Fit: Manufactured to match the original specifications for a direct, hassle-free replacement.

◆ Bypass Circuit Function: Routes coolant through the bypass passage, supporting proper warm-up and temperature regulation.

◆ Durable Construction: Built with materials resistant to coolant exposure, heat, and engine bay conditions.

◆ Cost-Effective Solution: An ideal alternative to costly dealership parts without compromising on fit or function.

◆ Honda Accord (2.4L): 2003–2012

◆ Honda CR-V (2.4L): 2007–2015

◆ Honda Civic Si (2.4L): 2012–2015

◆ Honda Crosstour (2.4L): 2012–2015

◆ Honda Element (2.4L): 2007–2011

◆ Note: Fitment varies by market and production period. Verify against your vehicle’s original part number and VIN before ordering.

Q1: Is this a genuine Honda part?

A: The 19504-RAA-A00 reference is the original equipment part number. Both genuine Honda and aftermarket equivalents are available that match the original fit and function .

Q2: How do I confirm if it fits my vehicle?

A: Check your vehicle’s existing hose. If it is stamped with 19504-RAA-A00, this replacement will fit. Also confirm your vehicle is equipped with the 2.4L engine and matches one of the models listed above .

Q3: Is this the upper or lower radiator hose?

A: This is neither the primary upper nor lower radiator hose. It is the bypass inlet hose (Hose, Bypass Inlet), which routes coolant through the bypass circuit near the water pump . Verify the specific circuit requirement before ordering.