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More Information for DAYCO PBU1639SS25
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DAYCO PBU1639SS25  
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DAYCO PBU1639SS25 Specifications
Bolt Hole Quantity3
Counterweight BalanceNeutral, no counterweight
Crank Bore (IN)1.475
Crank Bore (MM)37.45
Crank Trigger/Exciter PlateNo
Hardware IncludedNo
Installation Instructions IncludedNo
Nose Outside Diameter (IN)1.977
Nose Outside Diameter (MM)50.20
Number of Integrated Pulleys1
Outer Ring MaterialSteel
Overall Outside Diameter (IN)5.788
Overall Outside Diameter (MM)147.00
Overall Width (IN)3.701
Overall Width (MM)94.00
Pulley 1 Number of Grooves6
Pulley 1 Outside Diameter (IN)4.689
Pulley 1 Outside Diameter (MM)119.100
Pulley 1 TypeSerpentine
Ring Width (in)1.700
Ring Width (MM)43.18
Timing MarksYes
Woodruff Key IncludedNo
Race Performance 25% Underdrive
PowerBond™ by Dayco® Race Performance Balancers are designed with a unique combination of material and castings providing the maximum strength and durability of bonded dampening rubber. Each balancer is dynamically balanced for a smooth operation.

Features & Benefits:
  • Modifying the balancer diameter can alter the performance of the accessories and engine rev speeds that can increase the vehicle's horsepower output. These modifications can also help reduce power loss caused by front drive accessories and prevent over-revving alternators.
  • Note: This modified balancer changes the geometry of the original belt drive. Dayco® recommends this balancer to be serviced by a professional installer.

Warranty Information:
12 Months/12,000 Miles