"Stock LSJ" This is a new stock replacement belt for an LSJ car.
"GM Stage 2" is for smaller pulley (3.1" and lower) M62 cars.
"400" is the stock replacement belt for LNF, LE5, L61, LSJ(turbo) with Air Conditioning.
"390" is for your LSJ turbo converted car or LNF, LE5, L61 car with an ATI underdrive pulley.
"345" is the stock replacement belt for LNF, LE5, L61, LSJ(turbo) without Air Conditioning. Or if you were to remove your AC compressor.
"705" is the most common belt for our 2.2/2.4 supercharger kit.
If you do not see the size you want, click here.
Stage 2 Belt note:
This belt was designed for use with GM's original stage kits which come with a 3.1" pulley. Running pulleys smaller than this works because of the Cobalt's tensioner, but there are things to keep in mind:
1. A smaller pulley means the belt isn't as tight because it will have more slack.
2. A smaller pulley has less surface for the belt to grip
3. Smaller pulleys produce more boost, which in turn requires more HP to turn the blower. This additional HP increases the chance of belt slippage.
Ideally, this belt is used with a 3.1" pulley. A 3.0 is quite fine. As you go smaller problems can arrise and it's recommended to use our adjustable tensioner instead of the smaller belt. Another option is using our larger tensioner pulley with the smaller belt. We have seen belt failures with nearly all 2.7 and 2.6" pulley users who only run a smaller belt. We have seen many failures with 2.8" pulley users as well.
GM does not warranty this product so we are unable to pass any warranty along with the purchase of this product.
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