On the RB engines, the crankshaft and oil pump gear share a narrow engagement point, that can lead to catastrophic engine damage if not addressed. This collar from Tomei fixes the problem permanently by covering the smaller engagement point with a much larger engagement point to ensure that your oil pump keeps pumping and your RB stays healthy for a long time.
Features
Constructed from High-Quality Materials
Increases the Size of the Crankshaft/Oil Pump Engagement Point
Benefits
Significantly Improved Reliability from the Oil Pump