Est. delivery Fri, 16 May - Thu, 29 MayEstimated delivery Fri, 16 May - Thu, 29 May
Returns:
30-day returns. Buyer pays for return postage. If you use an eBay postage label, it will be deducted from your refund amount.
Condition:
Brand NewBrand New
When pistons travel downward in the cylinders, the air in the crankcase is compressed and pressure in the crankcase below the pistons increases. When pistons change direction and begin traveling back upward in the cylinders, a vacuum is created in the close, preventing air from entering the crankcase.