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    Dayco PB1681N Engine Harmonic Balancer
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          Dayco PB1681N Engine Harmonic Balancer

          SKU: 580|PB1681N
          Dayco Engine Harmonic Balancer — OE-grade replacement for reliable performance. Fits multiple vehicles.
          0.0
          Dayco
          Vehicle Specific
          Check if this part fits your vehicle.
          • $103.00
          In stock (2 items available)
          OR
          1-year warrantyAll parts covered
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          Same-day shippingOrder before 3 PM EST

          Dayco PB1681N Engine Harmonic Balancer

          Key Specifications

          • Brand: Dayco
          • Manufacturer Part Number: PB1681N
          • Part Type: Engine Harmonic Balancer
          • Condition: New
          • Warranty: 1 Year

          Vehicle Compatibility

          Fits select vehicle applications. Please ener your vehicle or check the Fitment section below to confirm compatibillity.

          Always verify vehicle compatibility using the fitment chart below before ordering.


          Reduce vibration and help protect engine components with this Dayco Engine Harmonic Balancer. It is engineered to manage torsional crankshaft vibrations, supporting smoother operation and long-term reliability.

          Why replace this part?A worn harmonic balancer/damper can cause vibration, belt tracking issues, noise, and potential damage to engine accessories. Replacing the damper helps restore proper vibration control and belt alignment.

          Key Features & Benefits

          • Vibration control - helps reduce torsional crankshaft harmonics
          • OE-style fit - supports correct pulley alignment and accessory drive operation
          • Durable construction - designed for long-term reliability
          • Application-specific engineering for dependable installation
          Product Overview

          Build Quality & Materials

          • Manufactured with materials selected for strength and vibration-damping performance.
          • Precision machining helps maintain proper fit and rotational balance.
          • Quality checks support consistent performance and durability.

          Installation Notes

          • Follow factory procedures for removal and installation; some applications require special tools.
          • Inspect belts, pulleys, and related components for wear and replace as needed.
          • Torque fasteners to specification and verify alignment after installation.

          Why Choose Dayco?

          Dayco is a trusted global supplier of belts, hoses, and engine system components, known for OE-level engineering and dependable performance. Choosing Dayco means proven quality, reliable fit, and long service life in real-world driving conditions.

          • OE-level engineering and quality standards
          • Designed for dependable fit, function, and durability
          • Broad coverage for domestic and import applications
          • Trusted by professional technicians

          Dayco Engineering Advantage

          Dayco products are developed using advanced engineering, material science, and validation testing to help ensure precise fit and consistent performance. Continuous design improvements focus on durability, noise reduction, and real-world reliability.

          Product Information

          Item Specifics (Technical)

          • Bolt Hole Quantity: 3
          • Counterweight Balance: Neutral, no counterweight
          • Crank Bore: 1.475 In. / 37.45 mm.
          • Crank Trigger/Exciter Plate: No
          • Hardware Included: No
          • Installation Instructions Included: No
          • Nose Outside Diameter: 1.982 In. / 50.33 mm.
          • Number of Integrated Pulleys: 1
          • Outer Ring Material: Cast Iron
          • Overall Outside Diameter: 7.225 In. / 183.50 mm.
          • Overall Width: 4.634 In. / 117.70 mm.
          • Pulley 1 Number Of Grooves: 7 mm.
          • Pulley 1 Outside Diameter: 6.989 In. / 177.50 mm.
          • Pulley 1 Type: Serpentine
          • Ring Width: 1.260 In. / 32.00 mm.
          • Timing Marks: No
          • Woodruff Key Included: No
          Fitment

          Vehicle Compatibility

          • 2007-2008 Chrysler Aspen — Engine: 5.7L V8;
          • 2004-2008 Dodge Durango — Engine: 5.7L V8;
          • 2003-2008 Dodge Ram 1500 — Engine: 5.7L V8;
          • 2003-2008 Dodge Ram 2500 — Engine: 5.7L V8;
          • 2003-2008 Dodge Ram 3500 — Engine: 5.7L V8;
            • SKU
              580|PB1681N
            • Weight
              8 lbs
          • Brand
            Dayco
          • Manufacturer
            Dayco
          • MPN
            PB1681N
          • EAN
            9317010016923
          • Fitment Type
            Direct Replacement
          • Part Type
            Engine Harmonic Balancer
          • Mfr Label
            Premium OEM Replacement Balancer

          Shipping Policy – DTautoparts

          We ship all orders from our U.S. warehouses with USPS, UPS, or FedEx.

          Processing Time

          • Orders placed before 3 PM EST ship the same day

          • Others ship next business day

          Transit Time

          • Standard shipping: 2–5 business days

          • Expedited shipping: 1–3 business days (optional at checkout)

          Shipping Rates

          • Free standard shipping on all orders

          • Expedited options available at checkout

          Tracking

          All orders include tracking information, emailed automatically once shipped.

          Lost Packages

          If a package is lost in transit, we will:

          • Start an investigation with the carrier

          • Resend the order or issue a full refund if confirmed lost

          Incorrect Addresses

          If the address is incorrect when the order ships:

          • Carrier may return the package

          • We can resend (buyer pays reship fee) or refund the order

          Return Policy – DTautoparts

          At DTautoparts, we want every customer to be fully satisfied with their purchase.
          If an item does not fit your vehicle or you are not fully satisfied, we offer hassle-free returns.

          Return Window

          • Returns accepted within 30 days of delivery.

          • Items must be returned in their original condition unless the item was defective or damaged on arrival.

          Free Returns

          • If the part doesn’t fit, or arrives damaged, we provide a free return shipping label.

          Customer-Responsibility Returns

          (used, installed, incorrect item ordered, changed mind)

          • Buyer pays return shipping.

          • Item must be unused, uninstalled, and in original packaging.

          Incorrect / Defective Parts

          If the part is faulty, damaged, or the wrong item was sent:

          • We will provide a free return label

          • And issue a full refund OR send a replacement

          Refund Time

          Refunds are processed within 2–3 business days after the returned item is received and inspected.

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          We accept the following payment methods:

          Accepted payment methods


          Warranty

          All parts sold by DTautoparts LLC are backed by a 1-year warranty.

          What’s Covered

          • Manufacturing defects

          • Premature failure

          • Broken components not caused by external damage

          What’s Not Covered

          • Normal wear and tear

          • Improper installation

          • Damage from accidents or abuse

          • Modified or altered parts

          How to Request a Warranty Claim

          Please contact us with:

          • Order number

          • Description of the issue

          • Photos or videos of the problem

          We will:

          • Review the claim in 24–48 hours

          • Provide a replacement or refund if approved

          • Fitment Type
            Vehicle Specific
          YearMakeModelSubmodelNotes
          2003DodgeRam 1500Laramie (5.7L V8)
          2003DodgeRam 1500SLT (5.7L V8)
          2003DodgeRam 1500ST (5.7L V8)
          2003DodgeRam 2500Laramie (5.7L V8)
          2003DodgeRam 2500SLT (5.7L V8)
          2003DodgeRam 2500ST (5.7L V8)
          2003DodgeRam 3500Laramie (5.7L V8)
          2003DodgeRam 3500SLT (5.7L V8)
          2003DodgeRam 3500ST (5.7L V8)
          2004DodgeDurangoLimited (5.7L V8)
          2004DodgeDurangoSLT (5.7L V8)
          2004DodgeRam 1500Laramie (5.7L V8)
          2004DodgeRam 1500SLT (5.7L V8)
          2004DodgeRam 1500ST (5.7L V8)
          2004DodgeRam 2500SLT (5.7L V8)
          2004DodgeRam 2500ST (5.7L V8)
          2004DodgeRam 3500Laramie (5.7L V8)
          2004DodgeRam 3500SLT (5.7L V8)
          2004DodgeRam 3500ST (5.7L V8)
          2005DodgeDurangoLimited (5.7L V8)
          2005DodgeDurangoSLT (5.7L V8)
          2005DodgeDurangoST (5.7L V8)
          2005DodgeRam 1500Laramie (5.7L V8)
          2005DodgeRam 1500SLT (5.7L V8)
          2005DodgeRam 1500ST (5.7L V8)
          2005DodgeRam 2500Laramie (5.7L V8)
          2005DodgeRam 2500SLT (5.7L V8)
          2005DodgeRam 2500ST (5.7L V8)
          2005DodgeRam 3500Laramie (5.7L V8)
          2005DodgeRam 3500SLT (5.7L V8)
          2005DodgeRam 3500ST (5.7L V8)
          2006DodgeDurangoAdventurer (5.7L V8)
          2006DodgeDurangoLimited (5.7L V8)
          2006DodgeDurangoSLT (5.7L V8)
          2006DodgeRam 1500Laramie (5.7L V8)
          2006DodgeRam 1500SLT (5.7L V8)
          2006DodgeRam 1500Sport (5.7L V8)
          2006DodgeRam 1500ST (5.7L V8)
          2006DodgeRam 1500TRX4 (5.7L V8)
          2006DodgeRam 2500Laramie (5.7L V8)
          2006DodgeRam 2500Power Wagon (5.7L V8)
          2006DodgeRam 2500SLT (5.7L V8)
          2006DodgeRam 2500Sport (5.7L V8)
          2006DodgeRam 2500ST (5.7L V8)
          2006DodgeRam 2500TRX4 (5.7L V8)
          2006DodgeRam 3500Laramie (5.7L V8)
          2006DodgeRam 3500SLT (5.7L V8)
          2006DodgeRam 3500Sport (5.7L V8)
          2006DodgeRam 3500ST (5.7L V8)
          2007ChryslerAspenLimited (5.7L V8)
          2007DodgeDurangoAdventurer (5.7L V8)
          2007DodgeDurangoLimited (5.7L V8)
          2007DodgeDurangoSLT (5.7L V8)
          2007DodgeDurangoSXT (5.7L V8)
          2007DodgeRam 1500Laramie (5.7L V8)
          2007DodgeRam 1500SLT (5.7L V8)
          2007DodgeRam 1500Sport (5.7L V8)
          2007DodgeRam 1500ST (5.7L V8)
          2007DodgeRam 1500TRX4 (5.7L V8)
          2007DodgeRam 2500Laramie (5.7L V8)
          2007DodgeRam 2500Power Wagon (5.7L V8)
          2007DodgeRam 2500SLT (5.7L V8)
          2007DodgeRam 2500Sport (5.7L V8)
          2007DodgeRam 2500ST (5.7L V8)
          2007DodgeRam 2500TRX4 (5.7L V8)
          2007DodgeRam 3500Laramie (5.7L V8)
          2007DodgeRam 3500SLT (5.7L V8)
          2007DodgeRam 3500Sport (5.7L V8)
          2007DodgeRam 3500ST (5.7L V8)
          2008ChryslerAspenLimited (5.7L V8)
          2008DodgeDurangoAdventurer (5.7L V8)
          2008DodgeDurangoLimited (5.7L V8)
          2008DodgeDurangoSLT (5.7L V8)
          2008DodgeRam 1500Laramie (5.7L V8)
          2008DodgeRam 1500SLT (5.7L V8)
          2008DodgeRam 1500ST (5.7L V8)
          2008DodgeRam 1500SXT (5.7L V8)
          2008DodgeRam 2500Laramie (5.7L V8)
          2008DodgeRam 2500Power Wagon (5.7L V8)
          2008DodgeRam 2500SLT (5.7L V8)
          2008DodgeRam 2500ST (5.7L V8)
          2008DodgeRam 2500SXT (5.7L V8)
          2008DodgeRam 3500Laramie (5.7L V8)
          2008DodgeRam 3500SLT (5.7L V8)
          2008DodgeRam 3500ST (5.7L V8)
          2008DodgeRam 3500SXT (5.7L V8)

          Frequently Asked Questions

          Does this part fit my vehicle?

          Use the Year/Make/Model selector at the top of the page.
          If unsure, contact us — we respond within minutes.

          Is this part new or used?

          All parts are brand-new, factory-fresh, and never used.

          Does this include hardware?

          If included, it will appear in the product images or description.
          If not listed, assume hardware is not included.

          What if the part doesn’t fit?

          No problem — we offer free returns on items that do not fit your vehicle.

          What warranty does this part come with?

          Every part includes a 1-year warranty.

          How fast do you ship?

          Orders before 3 PM EST ship the same day.