6k in parts for a timing chain alone?
Cons: expensive timing chain
Vehicle:
Mercedes
Reviews of IWIS timing chain
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13 votes
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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
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
The only better chain is made by Iwis, in Germany. Excellent chain.
Pros: excellent chain
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What we know about IWIS timing chain
The brand is registered in Germany. Official website: https://www.iwis.com/en-gb.
In March 2026, PartReview does not yet have a formed opinion of IWIS timing chain. This part is not in the ranking due to insufficient reviews. You can help by adding a review for IWIS timing chain.
Currently there are 4 reviews and 13 votes. Average rating — 4.2 out of 5. Vote balance: 11 up, 2 down.
Users also evaluated the qualities of IWIS timing chain:
- Rattle - brief metallic rattle at cold start is noticeable - no rating yet
- Starting - hard starts or rough running can appear - rated ambivalently. 3.3 points out of 5.
- Warning light - check engine light may illuminate - rated ambivalently. 3 points out of 5.
Timing chain IWIS in car-specific ratings
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