Are these parts good quality? I'm thinking about buying one of their circulation pumps.

curious too...but i think they're one notch down from merc...

I've used some of their parts in the past and have not had any issues with them.

I've used their gimble bearings and drive boots. Never an issue!

toyota : lexus

volkswagen : audi

mercury : sierra

prolly made in the same place

I have used their water pump with no problems. I was told they were the same just different name.

They are made in the same factory. Same pump. Same parts. Merc and Sierra have production agreements on replacement parts.

Sierra is owned by TeleFlex if that tells you anything. Just snapped this picture of their factory since you could hit a golfball from where I keep my boat and hit the Sierra factory.

Circulation pump... no comment. But a few years ago we installed a Sierra raw water pump & housing and it would not pump. Switched out to a Mercury and it worked perfect. I'm very careful with what Sierra parts I would use.

people have put in brand new merc pumps that wouldnt pump................