O2 Sensor - OEM vs Denso?

[landtank]

if you have a CEL indicating a bad O2 sensor the ECU will default to a "safe"condition for fueling.

My point is if the O2 sensor used is lying about the fuel ratio to the ECU, the ECU will not know any better. It will assume it is getting accurate data and not throw a CEL.

Now if you have both O2 sensors lying in unison then it will think the cats are working just great.

I wouldn't use anything other than OEM for this application.

 

[MAD MARK 80]

I just replaced original O2 sensors to Denso sensors. Truck runs good and better than before now because front sensor was dirty and rear one was somewhat dirty. However Denso sensors has less holes compare to stock one. I have no idea how much effect less holes but like I said truck runs good and no CEL.

However If I knew holes are less when I bought it I would pick OEM.

Again my stock one came from 1995, and today's better technology might be makes changed a design and still compatible.

 

[yardbird88]

If you order OEM O2 sensors from the dealer, the box probably stamped : "Denso" anyway and cost twice as much. Why do you want to make the dealer rich??

 

[specialk396]

The OEM parts are made on the same production line, at the same time, and to the same specs. There is not a cost feasibility to make two different parts for one application so that a Toyota supplier box can add $120 worth of value. The reason the OEM parts cost so much is that they have to handle, supply, warehouse, sell, and warranty that part on their dime. This is why every automotive service(not just OEM dealerships) has a markup on parts over wholesale prices(typically 39%).

If you purchase the Denso part this removes OEM's liability and support from the equation. This leaves you, the purchaser, to resolve any issues or costs associated with the installation and acquisition of the part. Rockauto does have a pretty good return policy, though.

I used the Denso parts for a long time on these trucks without knowing more than it was a quality part, but now I know why, thanks to the explanation on the Keiretsu and Toyota Group Keirutsu specifically. This is a great conversation...

 

[Blink]

I'm looking for a set of denso o2 sensors, both rockauto and partstrain have them costing $200+ a piece, that way more than OEM prices. Am I missing something?

 

[Impreza]

I'm looking for a set of denso o2 sensors, both rockauto and partstrain have them costing $200+ a piece, that way more than OEM prices. Am I missing something?

You can also buy it fairly cheap at Advance Auto Parts website and use one of their many coupon codes. Have it drop shipped to local store and pick it up for free. Make sure to specify Denso direct fit sensors. Should cost you around $130 for both front and back before tax (play with the coupon codes for max savings).

 

[Blink]

They are $340 at advanced. Am I missing something?
http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_oxygen-sensor-direct-fit-denso_20474899-p?searchTerm=denso&navigationPath=searchTerm*denso

 

[Impreza]

Part number 234-4157 and 234-4153
I took that from my receipt

MY1996

 

[Blink]

I have 1994. Only 2 sensors and they are both before the cat.

 

[spartan]

I just ordered a set of Denso O2 sensors from here:

http://www.oxygensensors.com/catalog.php?&pkey=1276703

They look identical in every respect to the factory parts and are plug and play connectors.

Part 234-4157
Part 234-4153

$156.32 total. I'm happy

They arrived packaged in perfect condition in two days.

Mine were replaced under warranty at 40K. Stealership making bucks no doubt.

Looking forward to install of new parts at 155K.

 

[CruisingMogollon]

Watch the prices on Amazon.com's warehouse deals. I got Denso 234-4157 for $13.92 and Denso 234-4153 for $27.27.

 

[KKAAAR]

Denso is Toyota

 

[winstonclein]

They are $340 at advanced. Am I missing something?
http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_oxygen-sensor-direct-fit-denso_20474899-p?searchTerm=denso&navigationPath=searchTerm*denso

Here for 234-4153:

http://shop.advanceautoparts.com/webapp/wcs/stores/servlet/product_x_20472046-P_x_x

Here for 234-4157:

http://shop.advanceautoparts.com/we...cleIdSearch=-1&searchTerm=234-4157&showTitle=

You were actually looking at Part No. 234-4520

 

[Blink]

I believe the O2 sensors for a 93-94 are different than the ones in a 95-97. The Denso Part number for a 93-94 O2 sensor is 234-4520

 

[Kernal]

I'm going through this now, which O2 sensors to buy. I've seen with some electric motor bearings Toyota spec'd the bearing differently than the same size bearing made by the same manufacturer (NSK). Those bearings had Toyota specific numbers on the seals, the sizes were universal but the internal designs (seals/clearances) were different. So it makes me wonder whether the Toyota O2 sensors for the Landcruiser are different (internally) compared to a Denso labeled O2 sensor that fits. They both might work but does the Toyota Landcruiser O2 sensor work better or last longer?? IDK.

I've found Denso OE sensors for $120 for both, smart sharper price on Toyota parts is about double that. But if the Toyota parts work better or even just last longer then it might be worth the extra cost up front??

 

[bsmart82]

I would imagine that parts manufactured for Toyota are to their specs, and possibly different in some way than aftermarket of the same manufacturer. But I don't see the O2 sensors being different or different enough to change thier operation or lifespan. I got lucky that mine had an open recall for the O2 sensors, but if I was replacing them I would probably go with Denso if they were much cheaper.

 

[Kernal]

Do you remember the details of the O2 sensor recall, which years??

 

[KKAAAR]

Denso = Toyota

 

[bsmart82]

Do you remember the details of the O2 sensor recall, which years??

SSC S02 is the campaign number, 93-94 years covered.

 

[Sam Stewart]

I'm willing to wager that the Denso ones are not the same as OEM. Why would Toyota let the manufacturer make and sell the exact same product from the same specs and undercut their price? That would be pretty stupid on their part. I have a kit here in my hand (the 93-94 kit that has both sensors) and it doesn't say Denso anywhere on it. It says Toyota NTK. The kit is $214.64 MUD price and comes with both sensors, gaskets, and nuts. Doesn't seem that outrageous of a price to me.

I know people will think I'm biased but I wouldn't use anything other than OEM for this application either. In reality, many MUDders can attest to this, I'll tell you how I really feel about it. If I think the Toyota part isn't worth the money, I'll tell you. If I think there is a really good aftermarket out there or something that will be more worth your money, I'll tell you. One that comes to mind is Longfields. I recommend them left and right. You can buy a complete set of Longs for the price of ONE OE birf. So, why would you buy the Toyota one?