Washer, Camshaft Sprocket, for 90~95 ZR-1 LT5. Sold individually. Four (4) washers are required per engine.

 Some washers have been drilled for locking pins.  Two 1/8" holes were drilled through the washer (& into the sprocket vernier plate) at 180 deg apart and spaced to be under the cam sprocket bolt.  The existing holes can be used as pilots to drill the sprocket vernier plate to "lock-in" cam timing.  1/8" roll pins appx 3/8" long would do the job nicely.  If you prefer the drilled washers, please specify in your order. Subject to prior sale.

 NOTE: This is a USED, GM OEM part.