Dayco 70907 Radiator Coolant Hose - Lower

Dayco Curved Radiator Hose 70907

Dayco 70907 is a curved radiator coolant hose built for cooling-system service where a dual inside diameter is required. Made from EPDM and finished in black, it is specified to SAE J20R4 Class D-1 and SAE J1684 Type EC standards for radiator hose applications.

This Dayco Curved Radiator Hose line is engineered for OE-style cooling-system routing and fitment, with formed construction that follows the vehicle’s hose path more closely than straight hose stock. For Ford truck and van cooling repairs, 70907 provides the correct dual I.D. transition for the listed application.

• EPDM construction for coolant-hose service
• Black finish for a factory-style appearance
• Dual I.D. hose design: 2 1/2 in. to 2 3/4 in.
• Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
• Curved radiator hose shape for routed cooling-system connections
• No heat shield and no protective sleeve

Fitment and application details

Compatible With Ford applications that use this dual-diameter radiator hose configuration. This part cross-references Motorcraft KM410 and Gates 20961 for the same application. Search terms such as Ford radiator hose 70907, Dayco 70907 coolant hose, and curved radiator hose for Ford cooling repair are commonly used for this part.

Use Dayco 70907 when replacing a worn, cracked, or leaking radiator coolant hose that connects components with different inside diameters. The formed shape helps maintain the original hose routing in Ford cooling systems, including truck and van applications where a curved hose is required.

What this hose helps address

• Coolant leaks from aged or split radiator hose material
• Softening, swelling, or collapse in an original EPDM hose
• Improper fit from a straight hose used in a curved routing path
• Diameter mismatch between hose connection points
• Cooling-system service on Ford vehicles using the listed OE-style hose configuration

Installation notes and quality assurance

Verify end diameters before installation: 2 1/2 in. on one end and 2 3/4 in. on the other. Confirm routing, clamp condition, and coolant compatibility before returning the vehicle to service. Because this hose is not supplied with a heat shield or protective sleeve, inspect nearby heat sources and abrasion points during installation.

Dayco manufactures cooling-system hoses to published SAE specifications, supporting consistent material and dimensional requirements for radiator hose replacement. Part number 70907 is a direct reference for buyers searching Dayco 70907 or Ford radiator hose 70907.