Review on Raybestos MC391339 Brake Master Cylinder by Tim Kallimanis

Firstly, the brake master cylinder leans towards the passenger side (pictured). The OEM master cylinder that I removed was perfectly level with the reservoir, so something about that master cylinder wasn't designed properly. Second, the o-ring does not seal the vacuum in the brake booster even though I have an OEM Lucas brake booster. Third, after I took the thing back off to add the RTV so there wasn't a massive vacuum leak and brake bleed a second time, the brakes locked up badly after driving a few miles and yes I made sure the brake booster pulled was set correctly. The Rock Auto and Raybestos websites say this is the correct part for the 1996 Discovery 1 4.0 V8 and should fit, which is definitely not true. Save yourself a big headache and spend a little more and get the TRW PML218 which is part of the OEM Lucas.