Universal Bushes Parallel Bushes Universal Kit Car Bush Caterham Type, 38mm Long, 12mm Bolt Sleeve Bore: 12mm - PF99-115-12 Bush Dimensions. Bush Diameter = 27.2mm, Length = 31mm. Sleeve Length = 38mm, Bolt Hole = 12mm. Comes with two nylon thrust washers. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!