Gates 26290 Turbocharger Intercooler Hose - Intercooler to Engine (Cold Side)

Gates Turbocharger Hose for Audi A4

The Gates 26290 turbocharger hose is an OE-exact molded intercooler hose built for the cold-side connection between the intercooler and engine. It is made for 2002-2006 Audi A4 and 2002-2005 Audi A4 Quattro applications, with a molded shape that supports a precise engine-bay fit.

Gates Turbocharger Hose (Molded - Standard) is part of the brand’s OE-exact hose line, focused on direct-fit replacement for factory-style turbo and intercooler routing. For Audi A4 and Audi A4 Quattro owners, this line emphasizes correct geometry, reinforced construction, and resistance to demanding under-hood conditions.

Key Features

• OE Exact fitment for factory-style replacement
• Molded intercooler hose for the cold-side turbocharger connection
• Multi-layer construction for added reinforcement and durability
• Silicone outer cover resists oil, contaminants, and heat
• Inside diameter: 2 in / 51 mm
• Inside diameter: 2.5 in / 63.5 mm
• Centerline length: 15 in / 381 mm
• Part number: 26290

Product Details

This Gates intercooler hose is built for the turbocharger hose route on the cold side, where consistent airflow and secure connections matter. The molded design helps maintain the original hose path on Audi A4 and Audi A4 Quattro models, while the reinforced construction and silicone cover are engineered for oil exposure, environmental contaminants, and high-temperature engine-bay conditions. If you are replacing a worn or damaged Audi A4 turbocharger hose, 26290 provides a direct-fit service part for the specified applications.

This part cross-references OSC 1791 for the same application.

Common Problems It Can Help Address

• Boost leaks caused by cracked or deteriorated intercooler hose material
• Loss of turbo response from a damaged cold-side hose connection
• Air leakage at the intercooler-to-engine routing on Audi A4 models
• Oil-soaked hose surfaces that no longer seal reliably
• Heat-related hose softening or deformation in the engine bay

Installation Notes and Tips

Verify the hose routing, inside diameter, and centerline length against the original part before installation. This hose is listed for the intercooler to engine (cold side) position on 2002-2006 Audi A4 and 2002-2005 Audi A4 Quattro models. Inspect adjoining clamps, pipes, and sealing surfaces for wear or contamination before installing the replacement hose.

Quality Assurance

Gates markets this hose as an OE-exact replacement built with multi-layer reinforcement and a high-quality silicone cover for durability in demanding under-hood environments. Part number 26290 is engineered to match the factory-style application for the listed Audi A4 and Audi A4 Quattro fitments.