SKU: 62923130299

XDP Stock Replacement Harmonic Dampener 01-05 GM 6.6L Duramax LB7/LLY

Sale price$209.22 Regular price$232.47
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Ships within 48 hours · Estimated delivery Sep 25 - Sep 30

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Description

XDP Stock Replacement Harmonic Dampener 01-05 GM 6.6L Duramax LB7/LLYDoes your Silverado or Sierra feel like your driving a grain truck sometimes? With high mileage diesel trucks, sometimes we expect a less than smooth ride out of it but it doesn't have to be that way. Replace the worn factory balancer on your GM 6. 6L Duramax with the XDP Premium Balancer Series Stock Replacement Harmonic Dampener XD709. Designed as a direct fit OE style replacement, the XD709 helps absorb harmful crankshaft vibrations that can lead

Does your Silverado or Sierra feel like your driving a grain truck sometimes? With high mileage diesel trucks, sometimes we expect a less than smooth ride out of it but it doesn't have to be that way. Replace the worn factory balancer on your GM 6.6L Duramax with the XDP Premium Balancer Series Stock Replacement Harmonic Dampener XD709. Designed as a direct-fit OE-style replacement, the XD709 helps absorb harmful crankshaft vibrations that can lead to premature wear on critical engine components such as the crankshaft, main bearings, timing components, and accessory drive system.

The harmonic dampener/balancer, also known as a crankshaft vibration damper, plays a vital role in reducing torsional vibration created during combustion. Over time, the factory balancer's rubber isolator can deteriorate, crack, or separate, resulting in increased engine vibration, belt issues, and potential engine damage. The XDP XD709 is built with spheroidal graphite cast iron and features inserted and pressure-bonded rubber for exceptional durability and reliable vibration control under stock and moderately upgraded applications.

Whether you're restoring a daily-driven truck, towing heavy loads, or maintaining your Duramax for long-term reliability, the XD709 offers premium construction and OE-quality fitment you can trust. Product listings identify this balancer as a direct replacement for GM 6.6L Duramax engines.

When do I need to replace my harmonic balancer/dampener?

The dampener on your truck dampens (duh) torsional vibrations generated by the crankshaft, protecting internal engine components and improving smoothness. If your dampener is going out you will notice cracked rubber, wobbling at idle, unusual engine vibration, belt noise, and timing issues. Sometimes it can feel like the entire truck is going to fall apart but with this easy fix you can get it running smooth again!

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 62923130299

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Madeline McAuliffe
Louisville, US
★★★★★ 5
Great Backpack!
Color: Upgrade-apricot, Size: 16 Inch
Great quality for the price and had a lot of space and pockets, which is super convenient!
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Reviewed in the United States on May 15, 2026
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Mahalya
Louisville, US
★★★★★ 5
Quality
Color: Upgrade-apricot, Size: 16 Inch
Am not disappointed buying this bag it’s spacious all different type of pockets the zippers are so unique the thickness is everything to talk about . I used this for my work bag that I carry 5 days of the week with my uniform,shoes,water bottle,phone,tablet etc and it’s still leaves a lot more space the firmness and sturdiness is 100% ..So comfortable the padding on the back and the shoulder keeps you relaxed. This is value for your money , my coworker are so inlove with my backpack
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Reviewed in the United States on March 20, 2026
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Trish M
Bozeman, US
★★★★★ 5
Very functional and spacious!
Color: Upgrade-apricot, Size: 16 Inch
I wasn’t expecting to love this backpack as much as I do, but wow —it’s everything I wanted and more. The apricot color is soft and pretty without being too “girly,” and the fabric has a nice matte texture that feels durable yet lightweight. It doesn’t have a plasticky smell at all, just a clean, new bag scent right out of the packaging. The compartments are super well thought out. I can fit my 16-inch laptop, chargers, skincare pouch, and even a change of clothes without the bag looking bulky. The back padding is surprisingly comfy, especially during long airport days, and the straps don’t dig into my shoulders. It sits well on my carry-on handle, making it the perfect travel companion. If you’re into functionality and aesthetics, this is it.
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Reviewed in the United States on July 31, 2025
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Jamie Whitten
San Leandro, US
★★★★★ 5
Great bag!
Color: A-darkgreen, Size: 16 Inch
Best computer bag! I absolutely love the color and quality. It will last a long time. Fits my 16” computer with room
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Reviewed in the United States on April 22, 2026
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Timkatmom
Whiting, US
★★★★★ 5
One of my Favorite Blouses!
Color: Navy Blue, Size: Large, Color: Navy Blue, Size: Large
This is the perfect top when you want to have a little dressier look than a t shirt, but you still are dressing casual or you could even dress it up because the material is just so nice. . I bought my usual size which is large. It’s a little bit loose, which I like, but not oversized. It comes down to around mid rear end . It is a half sleeve or almost a half sleeve, so it covers the batwing area. It is a high crew neck, but not uncomfortable. It basically stays wrinkle, free almost all day long and after you wash it, it is ready to wear. Speaking of washing, the garment says to put in a separate bag and wash in the machine. I did not put it in a separate bag because I didn’t read the instructions, but I had no problem afterwards. It does say hang to drive which I always do anyway, and the blouse looks brand new after several washings. The top is very well-made, very department store like looking. I purchased two of them, the navy and the white. The white is a little sheer, but not too bad that you have to wear something underneath it because it is a loose fit, it looks put together. The price was great as I got it on a deal.
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Reviewed in the United States on January 21, 2026

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