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Hi I am trying to find out which GM engine, my 2007 Brera v6 3.2 Q4 is a varient of, I want to change, cam chains, tensioner, and guides. My mechanic has stated that all parts removed, are stamped GM, I would rather buy GM parts, than the expensive Alfa ones, but cannot find a cross reference between GM and Alfa, any clues anybody?
 

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These are the GM parts and prices I had when I changed mine in 2015. It was an early 2006 3.2 with roller (non-Morse) type secondary chains so should be the same as a 2007

1 1 No. Pad Rear bank left hand chain slipper pad. 12623514 £9.15
2 1 No. Pad Rear bank right hand chain slipper pad. 12600462 £6.71
3 1 No. Pad Front bank cam chain pad (right side). 12600461 £9.15
4 1 No. Pad Front bank left hand chain slipper pad. 12623513 £9.15
5 1 No. Chain Primary cam belt chain. * 12597307 (NOT 12633451) £15
6 1 No. Pad Primary chain top pad. 12597417 £8.54
7 1 No. Chain Stretcher Rear bank cam chain tensioner. Not Reqd £0
8 1 No. Chain Stretcher Front bank chain tensioner. Not Reqd £0
9 1 No. Tensioner Primary cam chain tensioner with pad. ACDelco 12609263 £30
10 1 No. Pad Primary chain slipper (right side). 12586959 £6.10
11 2 No. Chain Cam shaft chain. 12589011(NOT 12633452) 2x£12=£24

My sprockets and secondary tensioners were fine so didn't need to be replaced. Primary chain tensioner incorporates slider so needs to be changed. I had to pay about another £50 in shipping and duty.


933014
 

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The |Mace kit is up-rated and it is worth getting one of their up-rated pumps while you are about it. It's not expensive and comes with the guide already attached. If you buy the Kit, it is worth paying the extra for the idlers and crankshaft sprocket as it is not that much more.

If you can afford Alfa prices - or GM, since they have just hiked their prices - scrap the car and buy a Maserati Quattroporte. If you have to pay the price of gold for Alfa or GM parts, you may just as well get something for your money!
 
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