Dayco 72843 Radiator Coolant Hose - Upper

Curved radiator hose for Toyota RAV4

Dayco Curved Radiator Hose Part Number 72843 is a branched radiator coolant hose built from EPDM for dependable coolant routing in the engine cooling system. It is listed for the upper position on 2013-2018 Toyota RAV4 applications and includes a protective sleeve for added abrasion resistance where the hose passes near surrounding components.

For buyers searching for a 2013-2018 Toyota RAV4 upper radiator hose, Dayco 72843 provides a direct-fit cooling hose option with the correct branched layout and molded curvature. The Dayco Curved Radiator Hose line is made for vehicle-specific cooling system routing, helping maintain proper hose alignment in tight engine bays.

Key features

• EPDM construction for coolant hose service
• Black finish for OE-style appearance
• Branched hose design for multi-port coolant routing
• Protective sleeve included for added surface protection
• Upper radiator hose application for Toyota RAV4
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Dayco Part Number 72843 for catalog and fitment lookup

Detailed product overview

This Dayco radiator coolant hose is shaped for the upper cooling circuit on the Toyota RAV4 and uses molded EPDM to handle engine bay heat and coolant exposure. The hose features a 1 3/8 inch inside diameter at one end, a 1 1/2 inch inside diameter at the other main end, and a 5/16 inch branch connection, making it suitable for the branched routing used in the listed application. Dayco 72843 is a practical replacement choice when you need a formed upper radiator hose for 2013-2018 Toyota RAV4 models.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What this hose helps address

• Coolant leaks from a cracked or aged upper radiator hose
• Softening, swelling, or collapse in the cooling hose
• Improper hose routing in the upper engine bay
• Branch-line coolant connection wear at the molded junction
• Surface abrasion where the hose runs near adjacent components

Installation notes and tips

Verify the upper hose routing and branch connection points against the removed part before installation. Inspect clamps, mating necks, and nearby fittings for corrosion or damage, and confirm the hose sits without twisting or kinking once installed. Because this is a vehicle-specific molded hose, correct alignment is important for sealing and long-term cooling system performance.

Quality assurance

Dayco manufactures this hose to meet SAE J20R4 Class D-1 and SAE J1684 Type EC requirements, supporting consistent material and dimensional standards for cooling system service.