PowerBond by Dayco PB1681N harmonic balancer for the 2003-2008 Dodge Ram 1500 V8 5.7L and other vehicles damps crankshaft vibration and drives the serpentine belt. It mounts on the front of the crankshaft with a cast iron outer ring and one integrated pulley.
- Cast iron outer ring
- One integrated serpentine pulley, 177.50 mm outside diameter
- Neutral balance with no counterweight
- 37.45 mm crank bore with three bolt holes
Quick facts
- Part: PowerBond by Dayco PB1681N harmonic balancer
- Also called: engine harmonic balancer
- Fits: 2003-2008 Dodge Ram 1500 V8 5.7L and other vehicles
- Material: Cast iron outer ring
- Condition: New
A cracked or shifted outer ring, or new vibration and belt noise at the front of the engine, can mean the balancer is worn, though a tired belt or a bad pulley elsewhere on the engine can look just the same. With the engine off and cool, look the ring over for cracks, and sort out the cause before you replace anything.
Fits
The 2003-2008 Dodge Ram 2500 V8 5.7L takes this part, and it is also a harmonic balancer for the 2004-2008 Dodge Durango V8 5.7L and many other vehicles; each takes one. If your truck or SUV is not named here, look up its year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 1
- Overall outside diameter: 183.50 mm (7.225 in)
- Crank bore: 37.45 mm (1.475 in)
- Nose outside diameter: 50.33 mm (1.982 in)
- Pulley outside diameter: 177.50 mm (6.989 in)
- Overall width: 117.70 mm (4.634 in)
- Ring width: 32.00 mm (1.260 in)
- Bolt holes: 3
Build and materials
- Outer ring material: cast iron
- Integrated pulleys: 1, serpentine
- Counterweight balance: neutral, no counterweight
- Timing marks: none
- Crank trigger/exciter plate: none
- Condition: new
In the box
One harmonic balancer. Hardware, a woodruff key and installation instructions are not included, so plan on new bolts.
Interchange: 594-359
6005191
Frequently Asked Questions
Is PB1681N the Ram 1500 harmonic balancer for 2003-2008 Dodge trucks with the V8 5.7L?
Yes. PowerBond by Dayco PB1681N fits the 2003-2008 Dodge Ram 1500 V8 5.7L, and each truck takes one. For another model, look up its year and engine in the "Vehicles it fits" section.
Does the PB1681N come with bolts and a woodruff key?
No. PowerBond by Dayco PB1681N is the balancer only; hardware, a woodruff key and installation instructions are not included.
What are the crank bore and outside diameter of this engine harmonic balancer?
The crank bore is 37.45 mm (1.475 in) and the overall outside diameter is 183.50 mm (7.225 in). The pulley outside diameter is 177.50 mm (6.989 in).
What can I check by eye on the cast iron ring of this balancer?
With the engine off and cool, look for cracks in the cast iron ring or a ring that looks shifted. A shop can test a balancer that looks fine but is still suspected.
Does the PB1681N have timing marks or a crank trigger plate?
No. This balancer has no timing marks and no crank trigger/exciter plate. It has neutral balance with no counterweight and one integrated serpentine pulley.
