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944S Cam Chain Tensioner

  • 1988
  • 944S
200 000

Why are the plastic upper cam chain tensioner guides so much cheaper than upper and lower together?  The upper alone seems to be around $14, but upper and lower together are $120-$150.

Upper only:

Upper and lower:

Does anyone ever just replace the upper alone?

How advisable is it to replace the J-tube when doing this service?  My chain has no play so it seems like oil is getting pumped to the chain tensioner.


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