Do NOT buy Ultra Power O2 sensors!

[David1]

Originally Posted by Klutch9
Saw a similar thread recently about garbage Ultra Power parts from RockAuto, and I had to chime in as well. Bought a downstream O2 sensor for my van, Ultra Power brand, since it was the cheapest by far and the sensor is very easy to replace. Went bad in less than one month. Got another one under warranty, failed in less than two months. Got my money back and bought a Denso part (came in OEM Hyundai box) for about $20 more. Lesson learned. I've come to realize that most all aftermarket parts, sans the good ones that improve OEM flaws and/or are an upgrade, simply aren't worth messing with if you plan to keep the vehicle. I just had to buy new motor mounts, and with enough research, I found all four of them, OEM, for not much more than aftermarket. ::steps off soap box::


I like NTK or DENSO or Bosch.... Never had any problems with them.... NTK and Denso I prefer.

 

[Trav]

I use all of those along with Walker (when they were lower priced), AC Delco, SMP, Delphi and never had a problem with any of them.
The Walker uses either a Denso or NTK element and makes the harness which is an OE fit and color, the SMP appears to use Bosch element also with a nice harness but the color may be generic.

Delco and Delphi appear to use an NTK element with a nice harness with OE colors for GM but may be generic colors for other makes. For VW cars I use a Delco rear o2 if going aftermarket, the length and connector are the closest to OE. Ford trucks get OE, Bosch or Walker. The Walker harness and connector really stands out for these applications.

A part of the decision for me is the connector and harness, all use very good top shelf elements but that's only one part of it. Many times this involves a trip to the store to compare it unless they give you an accurate length in the description.
The only made in China unit that I have seen that was halfway decent is by VEMO, I never bought one but have installed a few, they worked fine. Their price is close enough to brand names that there is no reason to buy them.

Just my own experience.

 

[Hootbro]

Originally Posted by zvm77us
The reason why you see Ultra power on rockauto's website is because rockauto is in a dispute with Dorman (as per their newsletter a few months back, because Dorman was making them charge a price floor on their products) so they brought in a cheap alternative to Dorman


Dorman by and large is bottom feeder junk. I guess RockAuto found a new bottom for their parts.

 

[zzyzzx]

I use Bosch on everything except Toyota's where I used Denso (and even then only because they cost about the same as Bosch). Haven't had any of these fail yet, even a Bosch sensor that around 15 years old and has ~ 180K miles on it. It's not like the Bosch sensors I've been using are expensive!