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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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Description
Valve Tappet Pushrod Housing Cover 3990737 3990738 3990730 for Dodge 5.9 Cummins 6BT Engine 12VPart Number: 3990737,3990738,3990730, 3990737, 3990730, 3911822,3904672, 3905046, 3908047, 3911822, 3919071, 3927911, 3927912, 3927913 Application: For Engine: Cummins 6BT3500, 2500, 4500, 5500, Ford, Freightliner, FL50, Freightliner FL60, Freightliner FL70,Freightliner FL80, Freightliner FS65, Freightliner MT35, Freightliner MT45, Freightliner MT55,Freightliner FC70, Ford CF700, Ford F700, Ford LN7000, ISB, QSB, B6. 7, Motorhome, 89, 90, 91, 92, 9
Part Number:
3990737,3990738,3990730, 3990737, 3990730, 3911822,3904672, 3905046, 3908047, 3911822, 3919071, 3927911, 3927912, 3927913
Application:
For Engine:Cummins 6BT3500, 2500, 4500, 5500, Ford, Freightliner, FL50, Freightliner FL60, Freightliner FL70,Freightliner FL80, Freightliner FS65, Freightliner MT35, Freightliner MT45, Freightliner MT55,Freightliner FC70, Ford CF700, Ford F700, Ford LN7000, ISB, QSB, B6.7, Motorhome, 89, 90, 91, 92, 9
Type:
Ãû:Tappet / Pushrod Cover
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
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4.9 ★★★★★
Based on 630 reviews
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Product Reviews
★★★★★ 5
This topper has definitely provided me with better, more comfortable sleep.
Color: Green, Size: Twin
I recently tried a twin mattress topper made from bamboo-derived viscose, and I'm quite impressed. The topper is thick, waterproof, and offers excellent comfort, especially for those who struggle with back pain or sleep hot. The bamboo and polyester blend gives it a soft, cooling surface that's perfect for a restful night's sleep without the sweaty feeling often associated with memory foam.
What I really appreciate is its dual function. It's breathable, allowing for good air flow, and fully waterproof, which helps keep the mattress underneath safe from spills. This is especially useful if you have kids or pets.
The topper's thickness is just right—it provides great support without feeling too soft or too firm. It cradles pressure points well, offering relief to my hips, back, and shoulders.
The fluffy filling holds up well over time, maintaining its softness and support. It fits securely on mattresses, thanks to a deep pocket skirt that prevents any sliding or bunching. This topper has definitely provided me with better, more comfortable sleep.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Soft and comfy
Color: Green, Size: Twin, Color: Green, Size: Twin
This mattress pad is much thicker and fluffier than the one I had before. With I took it out of the package, it was vacuum sealed with a note saying to leave it out in the sun for 48-72 hours or fluff it up with a hair dryer. I put it in the dryer on medium heat, which worked nicely. The pockets are really deep on this mattress pad and it fits snug. You don’t really see the shape with a sheet on top. It feels comfortable laying on top of it. It doesn’t flatten much when I’m laying down, but I imagine over time it will lose fluffiness. Overall it’s comfortable and breathable.
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Reviewed in the United States on May 31, 2026
★★★★★ 2
Good for already soft mattresses, 1in thickness.
Color: Dark Grey, Size: Queen
If your mattress is already soft, it will help. It's less than 1in thick after tumbling for 40 minutes. It did fit my queen bed and felt somewhat soft when laying down but it didn't help much as far as comfort. Quality wise it looks good, not cheap and while my sleep quality wasn't improved, it might help someone with a better mattress than mine.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Must have for mattress comfort and protection
Color: Green, Size: Twin, Color: Green, Size: Twin
I ordered the BDEUS Twin mattress topper for a temporary mattress. The topper definitely improves comfort and regulates temperature much better than just the mattress and sheets. The cover fits deep mattress easily fitting over my 13” mattress and could easily fit a much deeper bed. The padding is thick enough to provide some additional support. This model also has a thin sheet of waterproof material to help protect your mattress against spills or liquid damage. This layer is cover by the pillow top and does not seem to make much if any noticeable noise. Overall this is a high quality cover and mattress protector in one. At <$45 at the time of this review it provides an incredible value.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Topper
Color: Green, Size: Twin
I recently purchased the BDEUS Twin Mattress Topper Viscose Derived from Bamboo, and I am thoroughly impressed with my experience.
The comfort level is absolutely a 5 out of 5. The viscose bamboo material feels soft and plush, making my bed significantly more comfortable to sleep on. I wake up feeling well-rested and supported, which has been a noticeable improvement from before.
Here are some of the main pros and cons:
Pros: Incredible comfort and softness, high-quality materials, fits the twin mattress perfectly, and helps with temperature regulation throughout the night.
Cons: Name
Overall, I give the BDEUS Twin Mattress Topper a solid 5 out of 5 stars. It has completely transformed my sleeping experience, and I would highly recommend it to anyone looking to enhance the comfort of their bed.
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Reviewed in the United States on May 24, 2026
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