Went to the junkyard and all they had were two 1990 LA1Z 4-door Jettas. I yanked the one from the later car (had about 110k) and installed it in my GLI without checking or adjusting the pushrod length against my master cylinder. Observations with new booster: 1.) FAR less effort required to apply brakes. With a good booster in the car now, I realize just how ridiculously hard I had to stand on the pedal before. 2.) Pedal height is much higher at initial braking point, probably 50% higher than before.
Reviews of FAG brake booster
3 votes
1 review
What we know about FAG brake booster
The brand is registered in Germany. Official website: http://www.fag.de.
In March 2026, PartReview does not yet have a formed opinion of FAG brake booster. You can help by adding a review for FAG brake booster.
Currently there are 1 review and 3 votes. Average rating — 4 out of 5. Vote balance: 3 up, 0 down.
Users also evaluated the qualities of FAG brake booster:
- Pedal effort - less force is needed for strong braking - rated positively. 5 points out of 5.
- Hiss sound - constant hiss at the pedal hints at a vacuum leak - no rating yet
- Idle change - engine stumbles when pressing the brake if the booster leaks - no rating yet
Brake booster FAG in car-specific ratings
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