OEM Denso vs Denso aftermarket, insight straight from Denso

[troymcclure]

It's been discussed on here quite a bit but here it is straight from the horse's mouth. Fascinating article that delves into the difference between OE Denso and aftermarket Denso parts.

TL/DR takeaway: "Denso typically targets about 85-90 percent of OEM specs in both its aftermarket parts and Toyota Second Line parts."

https://www.repairerdrivennews.com/...t-parts-from-same-manufacturer-not-identical/

 

[alcyon]

I used DENSO narrowband oxygen sensor for my car and it is working just fine.

 

[The Critic]

Repost:

Thread 'OEM & Aftermarket Parts From The Same Supplier'

May 3, 2020

https://www.repairerdrivennews.com/...ts-from-same-manufacturer-not-identical/

I have read many comments on this site (and other sites) about vendors supplying identical parts to OE customers and to the aftermarket. This is not always true in my experience and this article somewhat validates my experience. For example, I used to order Akebono ProACT pads for Honda's and would find them to be sized smaller and perform differently than the Akebono pads that I purchase from the Honda dealer. Both products ultimately offer similar performance but the attributes are not identical. This...

• The Critic
• Replies: 6
• Forum: Automotive General Topics

• 

 

[BMWTurboDzl]

It's been discussed on here quite a bit but here it is straight from the horse's mouth. Fascinating article that delves into the difference between OE Denso and aftermarket Denso parts.

TL/DR takeaway: "Denso typically targets about 85-90 percent of OEM specs in both its aftermarket parts and Toyota Second Line parts."

https://www.repairerdrivennews.com/...t-parts-from-same-manufacturer-not-identical/

I think after 2020 automakers really put the squeeze on parts manufacturers with regards to selling "OE" parts. In the BMW world this meant an OE part was the Genuine BMW part with the BMW logo ground off. Now it's poor quality control aftermarket parts from Asia.

 

[dfarr67]

Compared to what else is out there- I'm a fan.

 

[willbur]

It's been discussed on here quite a bit but here it is straight from the horse's mouth. Fascinating article that delves into the difference between OE Denso and aftermarket Denso parts.

TL/DR takeaway: "Denso typically targets about 85-90 percent of OEM specs in both its aftermarket parts and Toyota Second Line parts."

https://www.repairerdrivennews.com/...t-parts-from-same-manufacturer-not-identical/

Thanks- great article

 

[KevinMalone]

Thanks for sharing, very interesting.

I always found it strange how OE parts for European makes are so readily available while the same cannot be said for Japanese makes.

 

[PandaBear]

Same for hard drive manufacturers, they tend to target much tighter tolerances because the qualifications is much tighter. Say they test 1000 units and if they fail more than 0.5% they will disqualify you for the next 6 months. In retail market if they fail even 1% they can just send you a warranty replacement or let you return free of charge at the retailers.

I've worked in a place once got a stop shipment as an OEM vendor. It is not a fun thing to deal with.

 

[The Critic]

Denso Downstream O2 sensor just failed on my wife’s Accord after 9 months and 5K?

Prior Denso lasted a couple years.

OE Denso lasted over 10 years and was originally replaced for giggles, oops.

 

[Andyd95]

Denso Downstream O2 sensor just failed on my wife’s Accord after 9 months and 5K?

Prior Denso lasted a couple years.

OE Denso lasted over 10 years and was originally replaced for giggles, oops.

This whole article makes you rethink buying Denso vs Genuine.

 

[Marcozi]

IMHO, buying parts like sparkplugs from other than a reputable source such as the dealer or FCP euro is a gamble.

 

[PandaBear]

Denso Downstream O2 sensor just failed on my wife’s Accord after 9 months and 5K?

Prior Denso lasted a couple years.

OE Denso lasted over 10 years and was originally replaced for giggles, oops.

This whole article makes you rethink buying Denso vs Genuine.

Don't fix what isn't broken. Did you at least keep the original as spare just in case?

 

[The Critic]

Did you at least keep the original as spare just in case?

What makes you think I would keep old parts around?

 

[PandaBear]

What makes you think I would keep old parts around?

I do, and you know it was working before you took it out?

 

[The Critic]

I do, and you know it was working before you took it out?

They are arguably consumables - handful of OEMs did recommend replacing them at prescribed intervals.

Do you keep your old spark plugs, drive belts and air filters too?

 

[KGMtech]

I can understand the business sense of Denso, but for all aftermarket part consumers it presents a big problem. If your car's part is something that Denso makes, is it made to fit 50 cars? or 10 ? regardless it means that perhaps the dealer part counter has the closer match to OEM spec? If you need a radiator and the size L to R and Top to Bottom is pretty standard, how do you know if the thickness of the core is -5mm or +3mm to what's installed in your car? Maybe the difference is small, but now you've increased the risk the engine might overheat if you visit Houston or take too long to get warmed up in Northern Ontario?

OEM's really don't want owners to keep the cars going longer than warranty. Dagnammit.

 

[The Critic]

OEM's really don't want owners to keep the cars going longer than warranty. Dagnammit.

This depends on the brand your purchase. The domestics are notorious for this. Also the model - high volume models are less of an issue.

Toyota and Honda are generally pretty good about supporting their higher volume models. I can still purchase consumables and common replacement parts from the dealer on 15-20 year old vehicles. Toyota still has a significant edge over Honda though, they discontinue fewer items and don’t play the price jacking game that Honda likes to.

 

[brages]

So is Toyota the "OEM" or is Denso the "OEM"?

There are two different definitions for Original Equipment Manufacturer and both are about equally popular. Calling Denso the OEM seems more logical to me, but then what is Toyota? The Final Assembler?

 

[zzyzzx]

What makes you think I would keep old parts around?

I keep stuff like that around because if I need to replace it again, I want to compare it to the original. Usually smaller stuff though.

 

[KevinMalone]

So is Toyota the "OEM" or is Denso the "OEM"?

There are two different definitions for Original Equipment Manufacturer and both are about equally popular. Calling Denso the OEM seems more logical to me, but then what is Toyota? The Final Assembler?

Denso is still the OEM in my mind. The genuine parts are still made by Denso, but to the vehicle manufacturers' (higher) standard