Sierra vs. Mercury
- Thread starter SEAWOLF
- Start date
dan313
Active Member
I've used Sierra products for a number of years on outboards and I/O alike. Never an issue.
Stee6043
Well-Known Member
I've been using Sierra for quite some time. I've never had any quality concerns...
R-and-R
Active Member
- May 9, 2018
- 258
- Boat Info
- Boatless
- Engines
- Boatless
No problems with filters, and other simple items.
Two years ago I got a new temp sensor that was sending false readings, returned for another one, same problem. Finally got the genuine Merc part and it worked.
Two years ago I got a new temp sensor that was sending false readings, returned for another one, same problem. Finally got the genuine Merc part and it worked.
BillK2632
Well-Known Member
Use mostly Sierra parts on my boat - water pump impellers, dist cap, rotor wires, circulating water pump, even used Sierra bellows and trim senders. I've never had an issue. The only time I could ever tell the difference is with the Alpha I Gen II outdrive gasket set - something about the input yoke o-rings that makes the drive very hard to slide on that last 1", when I use the Mercury OEM kit, slides in just fine. But in hundreds of parts over years and years, that is the only difference I have every noticed.
boatman37
Well-Known Member
- Jun 6, 2015
- 4,256
- Boat Info
- 2006 Crownline 250CR. 5.7 Merc BIII
Previous: 1986 Sea Ray 250 Sundancer. 260 Merc Alpha 1 Gen 1
- Engines
- 5.7 Merc BIII
I use the Merc/Quiksilver parts. On our old boat the shop replaced the bellows with Sierra and after 3 years they were starting to crack. With out current boat I told the shop I wanted the Merc parts and would pay extra. When I picked it up they had told me they went on much easier that Sierras due to pliability and there was minimal price difference so they didn't even charge me any extra. When I replaced the impeller in our old Alpha 1 I used Quicksilver. Not sure what brand the shop put in our current B3 but pretty sure it was Merc
Soulshine
Well-Known Member
I’ve had a similar experience with bellows but everything else has been fine.
northern
Well-Known Member
- Jan 17, 2007
- 3,526
- Boat Info
- 380 Aft Cabin 1989 Charts Timezero radar Furuno
- Engines
- Twin 454 strait shaft
I found raw Sierra water pump impellers are more pliable than OEM. Seem to work OK
460Apache
New Member
I have used sierra impellers in performance boats and the blades will fall off. Me and a few others have had that. Never happened with the mercruiser.
Brite Idea
Active Member
- Nov 5, 2011
- 451
- Boat Info
- 2010 310 Sundancer
270 Sundancer 2000
- Engines
- twin 5.0 ECT Bravo III's
twin 4.3 TBI Merecrusier Alpha Gen II counter rotating drives
I had a few issues with aftermarket quality and longevity so I went back to OEM and have to say the quality and longevity are better.
mquiet
Well-Known Member
I think for some items, aftermarket will be fine and other times not. A friend of mine used to work on the line for oil filters. They were all the same, but once an ord r for white ones were complete, then they made then in yellow, then another color. I just asked Caterpillar how much for an air filter and they wanted $250 each....I talked the the Walker distributor and they wanted $110 each. So do I think Walker is good, Yes. Is it considered aftermarket by Cat, yes. I bought Walker brand.
