Harley-Davidson Screamin' Eagle Twin Cam oil pump kit 

Screamin' Eagle Hydraulic Cam Chain Tensioner Plate Upgrade Kit 25284-11 with GASKET KIT CAM SERVICE 17045-99D, Spacer Kit CAM, TC88 25285-08 and Screw & Washer Kit 25566-06

This kit updates the cam chain tensioner of your Twin Cam 88® engine to the latest design, as featured on the Twin Cam 96™ engine. The billet cam support plate has been designed to allow the installation of the Twin Cam 96™ hydraulic cam chain tensioner to Twin Cam 88®-equipped models.

• Significantly outlast the spring loaded tensioners, and are an ideal addition to an engine modified for improved performance
• 02-'06 models utilize a Twin Cam 96™ single row Front roller chain and sprocket (included in kit)
• 99-'01 models use Original Equipment Front silent chain and sprocket to retain the cam position sensor function
• The kit includes an improved Screamin' Eagle® High-Flow Oil Pump that provides increased oil pressure at high-operating temperatures
• This kit increases the oil supply by 23% and scavenging by 50% when compared to the '99-'05 Original Equipment oil pump, and reduces operating temperature of bearings to improve bearing life