
Brake servo for Volvo Amazon 1969–1970 B20, 140 1968–1974, 2-circuit
Amazon, 140, 164
- Model year:
- 1969–1974
- Thread:
- 3/8"
- Engine:
- B20
- System:
- 2-circuit
A spongy or low-sinking brake pedal, or a servo that hisses under braking, are common checkpoints on late 122 cars with B20 and a dual-circuit system. On these model years the servo was paired with the twin brake system, so the correct version is determined by engine and circuit setup – something to confirm before choosing parts.

Amazon, 140, 164

Amazon, 140

Amazon, 140, 740, 760, 780

Duett, PV, Amazon, 1800, 140, 164, 260, 240, 760, 740, 960, 940, 850


PV, Amazon, 1800, 140, 164, 260, 240, 760, 740, 960, 940, 850

Amazon, 1800, 140, 240, 740, 760

PV, Duett, Amazon, 1800, 140, 240, 740, 760, 780


Duett, PV, Amazon, 1800, 140, 164, 260, 240, 760, 740, 960, 940, 850



Duett, PV, Amazon, 1800, 140, 164, 260, 240
Duett, PV, Amazon, 1800, 140, 164, 260, 240

Amazon, 1800, 140, 240

Amazon, 140, 260, 240
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This group includes complete brake servos, non-return valves and repair kits with O-rings for a leaking or sticky unit, plus filters, nipple as well as grease and plastilube for installation. When rebuilding, the diaphragm, non-return valve and vacuum connection are typical wear points to check. The selection gathers parts that fit the 122 with B20 engine and dual-circuit brakes, so that pedal feel and braking action are restored.