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Wastegate
By OE Match
- 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
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.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99918170950
The product you are viewing cross references to these numbers
OEMatch Wastegate — Fit, Function, Confidence
OEMatch wastegate components for Porsche models support correct turbocharger boost control and consistent day-to-day operation, whether you are maintaining a standard road car or refreshing an older turbo system.
- Wastegate valves
- Actuators and linkages
- Related boost control hardware
Understanding OEMatch Wastegate
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original wastegate. OE (Original Equipment) refers to parts matching original specifications for the wastegate and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM wastegate engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Wastegates regulate exhaust flow to the turbocharger, limiting boost pressure so the engine operates within its intended parameters. On Porsche turbo models, high exhaust temperatures, vibration and carbon build-up can affect valves, diaphragms, bushings and actuators. Over time this can lead to sticking mechanisms, leaks or slow response, all of which can disrupt boost control. OEMatch focuses on Porsche applications, offering wastegate-related items that align with model-specific layouts so owners can address age-related wear, refurbishment work or modifications with components chosen for Porsche turbo systems.
- Components chosen for Porsche turbo applications
- Made to original-spec dimensions for predictable installation
- Supports correct operation of boost control hardware
- Heat cycles and high exhaust gas temperatures gradually affect metal and sealing elements
- Carbon and soot deposits can restrict movement or prevent a full seal
- Ageing diaphragms, springs or actuators may weaken or crack, altering boost behaviour
The Importance of Replacing with OEMatch Wastegate
Keeping the wastegate in good condition on a Porsche turbo helps the control system manage boost within its intended window, reducing the likelihood of erratic operation or related fault codes. Many owners search for genuine or OEM wastegate; these are direct-fit alternatives designed to match the original form, fit and function. When a valve or actuator becomes worn, contaminated or sluggish, prompt replacement helps maintain consistent boost behaviour and supports the wider turbo and engine system. Choosing parts specified for Porsche applications from OEMatch allows you to refresh older hardware systematically, whether you are maintaining a daily-driven car or carrying out more extensive overhaul work.
- Components selected specifically for Porsche turbo systems
- Made to original-spec dimensions for consistent performance
- Options suitable for targeted repairs or wider refurbishment
Support & Advice
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.
