Hose 8x14mm Wastegate, Warm Up Regulator and 911 Coolant Tank. Porsche 911 / 911 turbo / 928  ❭  99918170950

Hose 8 x 14mm Wastegate, Warm Up Regulator & Coolant Expansion Tank
Sold per metre

High-quality hose designed for multiple Porsche applications, including the warm-up regulator (WUR) and turbocharger wastegate systems on the Porsche 911, as well as the coolant expansion bottle on the Porsche 928.

This versatile hose supports both fuel/air control systems and coolant circulation, making it an essential component for maintaining proper engine performance, boost control, and cooling system efficiency.

Fits:

• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1975-1977 3.0L Turbo (930)
• Porsche 928 4.5L 1978-82
• Porsche 928S 4.7L 1981-83
• Porsche 928S2 4.7L 1984-86
• Porsche 928S4 5.0L 1987-92
• Porsche 928GT 5.0L 1989-91
• Porsche 928GTS 5.4L 1992-95

Diagram ref no 16 and 46  

Supplied per metre, this hose allows precise length replacement and flexible routing, making it ideal for maintenance, repair, or restoration of Porsche engine bay systems. Manufactured to OEM specifications for durability and reliable performance.

Key Features

• 8mm internal diameter, 14mm outer diameter
• Suitable for Porsche 911 and Porsche 928
• Part number 99918170950
• Multi-use: WUR, wastegate, and coolant expansion systems
• Sold per metre for custom length applications
• Resistant to heat, pressure, and fluid exposure
• Flexible and durable construction
• OEM-style fit and performance

Function and Purpose

This hose is used across several critical systems.

It helps to:
• Supply air or pressure signals to the warm-up regulator (WUR)
• Support turbocharger wastegate operation and boost control
• Transport coolant to/from the expansion bottle (928)
• Maintain system pressure and fluid flow
• Ensure reliable engine and turbo performance

Why Replace Hoses

Hoses degrade over time due to heat, pressure, and fluid exposure.

Common issues include:
• Cracking or splitting
• Boost or vacuum leaks affecting performance
• Coolant leaks leading to overheating
• Hardening and reduced flexibility

Replacing worn hoses ensures safe operation and restores system efficiency.