Yes it is. Get a new set (preferably with an IWIS pro series chain) and be done with it.
Pros: IWIS pro series chain
Cons: chain is too loose
Reviews of IWIS parts For Business
Average Rating
?
The manufacturer's average rating is calculated based on ratings of all its spare parts. It determines the place in the manufacturer ranking
4.6
Manufacturer Ranking
-
5
Spare Parts
2
Country
Germany
Website
iwis.com
Spare Parts
I've been gathering parts to do the timing chain on my 2012 CTT. I bought it with a reduced engine power warning but was originally told it was just a variable valve solenoid. Thankfully I did some research and learned that you can see part of the upper timing chain guide through the oil fill cap hole. Mine is missing the plastic lining on the upper chain guide so a timing chain service is needed.
Pros: OEM supplier
Cons: plastic lining missing
Vehicle:
Porsche Cayenne
A preventative chain job on a RWD N47 is closer to 1200 quid (using a genuine IWIS kit) not 4k. It is relatively cheap long term security if you plan on keeping the car.
Pros: cheap long term security
The only better chain is made by Iwis, in Germany. Excellent chain.
Pros: excellent chain
6k in parts for a timing chain alone?
Cons: expensive timing chain
Vehicle:
Mercedes
Write your review
Help others - share your experience with this part.
Voted AGAINST engine oil RAVENOL on the rating page
The brake pads OEM Alfa Romeo got the first review!
The brake caliper OEM BMW got the first review!
The brake pads OEM Infiniti got the first review!
For wiper blades PIAA already 100 reviews.
For battery Energizer already 25 reviews.
In the rating best water pump already 12 brands participate!
In the rating best timing belt already 13 brands participate!
In the rating best head gasket already 3 brands participate!
In the auto rating oil filter for Volkswagen Passat already 5 brands participate!
In the auto rating brake pads for Mazda 5 already 10 brands participate!
In the auto rating tires for Subaru Outback already 50 brands participate!
For cabin filter Fram already 25 reviews.
Voted AGAINST engine oil RED LINE on the rating page
Voted AGAINST engine oil PENNZOIL on the rating page
Owner reviews of IWIS products
The IWIS brand is registered in Germany. Official website: https://www.iwis.com/en-gb .
In March 2026, PartReview recorded 5 reviews across 2 parts by IWIS. Average rating — 4.6 out of 5.
IWIS is not yet in the PartReview manufacturers ranking due to insufficient reviews.
Popular IWIS parts
The most popular IWIS products on PartReview:
- Timing chain IWIS - 4 reviews. PR Score — not available yet, average rating — 4.2.
- Timing chain kit IWIS - 1 review. PR Score — not available yet, average rating — 5.
Most owner reviews about IWIS parts are collected on these pages.
Top-rated IWIS parts
IWIS products have not yet participated in the rankings due to insufficient reviews. You can help by adding a review.
Comparisons of IWIS parts
Unfortunately, we do not yet have enough reviews to compare IWIS parts with other manufacturers. You can help by adding your review.