Switching manufacturers is not the cheap way out. We are actually paying more for a better quality, American made O-ring. These O-rings will be more consistent and to our standards, and our quality control will be increased. As I stated above, we are personally checking each plate that has an O-ring from this batch. We are taking the time to show you we care and make sure that everyone is getting the quality product that we intended.

Also, we did in fact get the O-rings to the OP, as he confirmed with me that he received them. We would not lie about sending out O-rings to a customer who needed them.

Anyone who reads this thread will see that we are not only active in the community, but we also care about our customers and want to ensure they get the highest quality product. People continue to buy and support our products, not only because of our quality products, but also because of our customer service. We try very hard to accommodate our customers and make sure they are happy with the products they have received.

Finally, I will state as I have before, that we do not sell knock off parts. We design and engineer all of our products in house, and then proceed to test them in house to guarantee quality products. Our products are not failure prone. We would not be able to have a lifetime warranty on our products if they were, as we would go bankrupt from giving out replacement parts. We have a very low failure rate, but as with any company, things still do happen. It's how the company handles that situation that shows their credibility.

To chim back in. (I've been busy working on the car and testing the motor)

I did receive the single o ring that was mailed to me. I never installed it because I sent the defective piece back to Amazon and took the 20% hit on restock. While it is good to see the problem being addressed well after my issue was found, the apology doesn't really help me. I stated to Mishimoto and here. This "inconvenience" cost me north of $350 not including sending samples of oil out to black stone for a before and after comparison.

To clarify my reasoning for the part chance. I did not feel Mishimoto had Any concern for my situation and I received some of the worst customer service throughout the ordeal. After being told the best they could do was mail another oring (which apparently is a lesser quality oring than should be used) it took 2 weeks (approximately) for the o ring to arrive.

It was replaced with a mocal plate thanks to Z1 actually shipping some thing on time and a method that wasn't first class mail. So far the engine is still running and is my daily driver so time will tell if something is wrong.

I have had several people pm me concerning their plates or potential purchases. I have been advising against this plate based on my experience with the company. Word has also spread around my area to be careful of these plates and I have helped two people replace them on local cars from our meets.

I honestly wished this plate had worked out. The Mocal plate is slower to warm up on cold days in East TN but the piece of mind is worth the inconvenience compared to losing 6.5 quarts of oil ( that discolors your Ark Exhaust, causes two aero panels to shear because it soaked into the panel, makes you replace front brake pads due to oil soak, and have the car towed to a dealer where it was kept for a week)

People weighing the pros and cons can decide for them self but as a quality engineer at a company that supplies almost every manufacturer that sells in NA I don't believe proper quality inspection is being competed on these parts which changes my mind on using anything they make. Luckily I learned this before I purchased a radiator to upgrade the cooling system. (Summers on the dragon get hot!)

Glad to hear the motor seems to be holding up. Now we can sit back and wait for Tyler to jump in here and tell us how great their parts are and how good their quality control is.

Wow, I bought one of these and was waiting to change my oil before installing it. I will be sticking with the non-thermostatic Mocal that came with the Z1 kit I have. Now I have to sell this thing...ugh.

...Anyone looking to buy a Mishimoto thermostatic sandwich plate? It's brand new!!!

Might be hard to sell it after this thread. Can you return it?

I'm not sure. I bought it a good while back...probably a couple of months ago. I will look into it.

SO OP DIDN'T GET HIS $350 OR THE DIFFERENCE AFTER THE PARTUNDER THE LIMITED LIFETIME GUARANTEE???

He just got a replacement part and o ring??? :mad:

All the political emails defending the company yet not sticking by the "No BS Warranty". At least not fully. And I'm really upset about how long it took ok to get help. And it infuriates me even more that his response came through a forum post and not to his personal phone or e mail.


No more biz from me..

Not even a new part, just an O-ring. One. And they lied to him about when it shipped out several times. No matter what their spin jockey has to say about it, the OP clearly was misled several times as to when it got shipped out.

For people new to this thread- they can't get an O-ring in the mail without ******* it up. Do you want to trust them with your motor?

Lots of promises from these companies until it's time to show and prove.

Sell it to a Mishimoto employee!

bet you they don't even run their own products.

Tyler loves the ****, he'll buy it off you. :rofl2:

How many Mishimoto employees do you think are willing to put their parts on their personal cars? Any of them? :rofl2:

Of course not. They know how many parts slip through their "quality control process". :rofl2:

nah they probably all run the american made prototype pieces

370Z Community:

I felt compelled to respond to this thread after reading through in detail. Every attempt was made to address the situation. We have been communicating with the community in a transparent manner to address this situation. Clearly we take our customer's satisfaction and our brand image very seriously. We pulled all of the inventory and inspected as well as ran internal leak tests. We did in fact bring an O ring expert from Parker company in to provide additional feedback. We have changed O Ring suppliers and are using this company moving forward. We swapped out all of the current O Rings with the new O Ring part as a precautionary measure. We have also implemented new torquing specs in our quality control process, although is should be noted that the inventory inspected was properly torqued. It should also be noted that this is a sole incident and we have not had any other reported issues.

While members like Chuck continue to troll this forum to try to get a rise, we hope that other members will read this and realize the extent the company has gone through to address and solve the issue. The part is a fantastic part. It was well engineered and it works great. This was an unfortunate incident and it has been addressed. Manufacturing is not perfect. Things happen - regardless of the level of quality control or where the part is made.

On a side note - Did you know the Challenger shuttle explosion stemmed from a faulty O-Ring?

CHALLENGER EXPLOSION

We manage 1,400 SKUs over dozens of makes and models and have produced hundreds of thousands of parts. Its only natural that something will go wrong at some point. While Chuck may chime in and say that we are only addressing this because it is on a forum - I call BS. The forums are a great tool to communicate with our consumers, whether good or bad. This should have been addressed prior, as 99% of issues are, during the initial phone call. This has been addressed internally. If we didn't offer great support 99% of the time, you would be hearing much more negativity from consumers. We wouldn't be able to offer a lifetime warranty on our parts if we weren't confident of the quality. The company has 40+ employees and four locations in three countries. We're in it for the long run - not to make one-time sales to customers. We frankly cannot afford to lose the trust in our consumers, which is why we go to the extent we do.

Regarding the service that Derraj06 has experienced.. Again - We have pulled our CSRs aside and have addressed the issue. We will be reaching out to provide you with a complimentary product or gift certificate to the website to accommodate you for your unfortunate experience. This should have been done sooner, and I apologize for that.

Best Regards,

Mike Sullivan
President
Mishimoto