Cam Bearing Service Kit for Mack E-Tech engines ONLY!
This collet will only work on the Mack E-Tech’s. This will not work on a Mack E7 engine.
If you are unsure whether you have an E7, or E-Tech, check your 7 Bearing OD. Mack E7 OD is 2.680″ ±. The Mack E-Tech OD is 3.812″±.
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