0145421 Features:

• Includes (5) offset bushings, (1) thrust bearing, (1) locking plate, and (3) mounting bolts, and washers
• The dual idler gears deliver better stability than single gear drives
• Provides high-precision timing and reduces drive friction
• Offset bushings allow for easy camshaft indexing
• Eliminates premature wear under extreme conditions over timing chains

Note:

• Fits underneath most stock timing chain covers - minor trimming or machining of the cover may be required