Alfa Romeo GTV 916 2.0 Twin Spark RHD — Brake Servo Replacement Guide
Vehicle & Part Overview
Vehicle: Alfa Romeo GTV 916 series, 2.0 Twin Spark, Right Hand Drive
Component: Brake servo (vacuum booster unit)
OEM Part Number: 60626664
The 916 GTV was produced from 1994 to 2005, meaning even low-mileage examples are now at least 20 years old. Rubber components deteriorate with age regardless of mileage, making servo failure common on well-preserved, low-use cars.
Important: The RHD servo unit differs from the LHD version. Always confirm right hand drive fitment when contacting suppliers — some will attempt to supply the LHD unit, which will not fit correctly.
Diagnosing the Symptoms
Hissing Sound from the Servo
A hissing sound heard from inside the cabin is almost always caused by one of two things:
- Vacuum check valve failure — the first and cheapest thing to test. Pull the vacuum hose off the check valve on the servo and inspect it for cracks or loss of vacuum. Replacements are inexpensive and widely available.
- Internal diaphragm failure — if the check valve is intact, the rubber diaphragm inside the servo has likely hardened or cracked with age. This requires either a full servo replacement or a professional rebuild.
Soft Pedal with Slow Response
A soft, unresponsive pedal combined with a hissing servo indicates the diaphragm has fully or partially failed. When the diaphragm deteriorates, the servo can no longer maintain the vacuum differential required to assist braking.
Safety Warning: A soft, unresponsive brake pedal significantly increases stopping distances. Do not continue driving the vehicle until the braking system has been inspected by a qualified brake specialist.
A soft pedal can also indicate:
- Air in the brake lines
- Failing master cylinder seals — on a 20-year-old vehicle, master cylinder seals will have aged regardless of mileage
The master cylinder and servo sit together as a combined unit on the 916. If the servo is being replaced or rebuilt, it is strongly recommended to replace or rebuild the master cylinder at the same time.
Sourcing Recommendations
Use OEM part number 60626664 as your reference when contacting any supplier.
- Autodoc — frequently stocks Alfa Romeo brake servo units and compatible aftermarket equivalents
- Rimmer Bros — has expanded beyond Triumph and Rover and now stocks Alfa Romeo parts
- Euro Car Parts — can cross-reference original Alfa part numbers to aftermarket equivalents
- SNG Barratt — worth checking for crossover parts
Specialist Forums
Alfaowner.com is a recommended resource. Members frequently have new old stock available or reliable leads on correct RHD servo units.
Rebuild vs. Replace
For a low-mileage, well-preserved 916, having the original servo professionally rebuilt by a brake servo reconditioning specialist is often the preferred route. This keeps the correct original components in place and is particularly worthwhile given the low mileage on the car.
If sourcing a replacement unit, use part number 60626664 and confirm RHD fitment explicitly with the supplier before ordering.