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Description
2-Piece Hex Head Cap Screw 3903990 for Cummins 6B/4.5/5.9/6.7 EnginesReplacement part number: 3903990, J903990 Fit for Cummins Engine: 15N CM2380 M104B, 15N CM2380 M105B, 4B3. 9, 6. 7N CM2380 D109B, 6B5. 9, 6C8. 3, B3. 3, B3. 9 CM2620 B171C, B4. 0 CM2620 B154B, B4. 5, B4. 5 CM2220 B186B, B4. 5 CM2350 B129B, B4. 5 CM2350 B146C, B4. 5 CM2350 B147B, B4. 5 CM2350 B160M, B4. 5 CM2350 B161M, B4. 5 CM2620 B158B, B4. 5 CM2620 B180B, B4. 5 RGT, B4. 5S, B5. 6 CM2670 B152B, B5. 9 CM2670 B166C, B5. 9 G, B5. 9 GAS PLUS CM556, B5. 9
Replacement part number:
3903990, J903990Fit for Cummins Engine:
15N CM2380 M104B, 15N CM2380 M105B, 4B3.9, 6.7N CM2380 D109B, 6B5.9, 6C8.3, B3.3, B3.9 CM2620 B171C, B4.0 CM2620 B154B, B4.5, B4.5 CM2220 B186B, B4.5 CM2350 B129B, B4.5 CM2350 B146C, B4.5 CM2350 B147B, B4.5 CM2350 B160M, B4.5 CM2350 B161M, B4.5 CM2620 B158B, B4.5 CM2620 B180B, B4.5 RGT, B4.5S, B5.6 CM2670 B152B, B5.9 CM2670 B166C, B5.9 G, B5.9 GAS PLUS CM556, B5.9 LPG PLUS CM556, B6.2 CM2670 B156B, B6.7 CM2350 B121B, B6.7 CM2350 B135B, B6.7 CM2350 B136C, B6.7 CM2350 B148B, B6.7 CM2350 B157C, B6.7 CM2450 B155B, B6.7 CM2450 B177C, B6.7 CM2670 B153B, B6.7 CM2670 B164C, B6.7 CM2670 B167B, B6.7 CM2670 B173B, B6.7 CM2670 B175G, B6.7 CM2670 B188B, B6.7 CM2880 B191G, B6.7 G CMOH6.0 B125, B6.7N CM2380 B150B, B6.7N CM2380 B183B, B6.7O CM3580 B193B, B6.7S, B7 CM2670 B165C, C GAS PLUS CM556, C8.3 G, D4.0 CM2620 D103B, D4.5 CM2620 D104B, D6.7 CM2670 D102B, D6.7 CM2670 D106B, D6.7 CM2670 D107B, F2.8 CM2620 F135B, F2.8 CM2620 F136B, F3.8 CM2350 F120B, F3.8 CM2350 F128C, F3.8 CM2350 F132B, F3.8 CM2350 F133C, F3.8 CM2620 F137B, F3.8 CM2620 F144B, F3.8 CM2620 F149B, F3.8 F102, F4.5 CM2620 F139B, F4.5 CM2620 F141C, F4.5 CM2620 F146B, G5.9, G5.9 CM558, G8.3, G8.3 CM558, GTA8.3 CM558, GTA855 CM558 (CM2358) G101, HSK78G CM2358 K129G, ISB (Chrysler), ISB 2002 DCX, ISB CM2150, ISB CM2150 E, ISB CM550, ISB CM850, ISB/ISD4.5 CM2150 B119, ISB/ISD4.5 CM2150 SN, ISB/ISD6.7 CM2150 B120, ISB/ISD6.7 CM2150 SN, ISB/ISD6.7 CM2880 B126, ISB4.5 CM2150, ISB4.5 CM2350 B104, ISB5.9 CM2150 B111, ISB5.9 CM2880 B110, ISB5.9 CM2880 B127, ISB5.9 CM2880 B172, ISB5.9 CM800, ISB5.9G CM2180, ISB6.7 CM2250, ISB6.7 CM2350 B101, ISB6.7 CM2350 B103, ISB6.7 G CM2180 B118, ISBE CM2150, ISBE CM800, ISBE4 CM850, ISC CM2150, 15-600, QSX, QSX15-600
Application:
Fit for Hyundai Forklift:
100D-7, 110D-7A, 110D-7E, 110D-9, 120D-7, 130D-7A, 130D-7E, 130D-9, 135D-7, 140D-7E, 160D-7, 160D-7A, 160D-7E, 160D-9, 180D-7E, 250D-7E, 250D-9, 33HDLL, 35D-9, 40D-9, 45D-9, 50D-9, 50DA-9, 60D-9, 70D-9, 80D-9, HDF35/45AII, HDF50A, HDF70A
Fit for Hyundai Crawler Dozer: H70, H70 LGP, H80, H80 LGP
Fit for Hyundai Loader:
HL17C, HL25C, HL720-3, HL730-3, HL730-7, HL730-7A, HL730-9, HL730-9A, HL730-9S, HL730TM-3, HL730TM-7, HL730TM-7A, HL730TM-9, HL730TM-9A, HL740-3, HL740-7, HL740-7A, HL740-7S, HL740-9, HL740-9A, HL740-9B, HL740-9S, HL740TM-3, HL740TM-7, HL740TM-7A, HL740TM-9, HL740TM-9A, HL750, HL750TM, HL757-7, HL757-7A, HL757-7S, HL757-9, HL757-9A, HL757-9S, HL757-9SM, HL940, HL940TM, 42HDLL/39HDRB
Fit for Hyundai Excavator:
R140LC-7, R140W-7, R140W-9, R160LC-3, R170W-9, R200W-7, R200W-7A, R210LC-7, R210LC-7A, R210LC-9, R210NLC-7, R210NLC-7A, R210NLC-9, R210W-9, R220LC-7, R235LCR-9, R250LC-7, R250LC-7A, R250LC-9, R290LC-7, R290LC-7A, R290LC-9, R305LC-7, R320LC-7, R320LC-7A, R320LC-9, R360LC-7, R360LC-7A, R360LC-9, R800LC-7A
Fit for John Deere Self-Propelled Forage Harvester: 7800, 7850, SPFH 7800, SPFH 7850
Fit for Komatsu Rigid Dump Truck: AFE48-CQ, AFE48-CU, AFE48-CX, AFE48-DB/DC, AFE48-DF
Fit for Volvo Excavator: EC240, EC290, KEW130
Fit for CASE Motor Grader: 845, 885
Fit for CASE IH Tractor: 9110, 9130
Fit for CASE Loader: W36
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]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 5
Soft and comfortable
Size: Queen - Pack of 2, Style: Medium, Configuration: Pillow
These pillows are incredibly soft and comfortable. They provide great support while still feeling plush and cozy. I’ve been sleeping much better since I started using them.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
This Pillow Is A Must Buy!! What Are You Waiting For?
Size: Queen (Pack of 1)
This is, without a doubt, the best pillow I have ever owned. One of my favorite features is the adjustable shredded memory foam fill, which allows you to customize the loft and firmness by adding or removing foam to suit your sleeping preferences. As both a side and back sleeper, I found it incredibly comfortable and supportive.
The overall quality is excellent, from the materials used in the pillow itself to the thoughtful packaging. The removable cover is washable, although I personally use a pillowcase to keep it protected. I also appreciated that extra foam is included, making it easy to fine-tune the pillow over time.
The difference in my sleep quality was noticeable from the very first night. I’ve been sleeping more comfortably and waking up feeling more rested ever since I started using it. Considering the quality, comfort, and customization options, I believe the $75 price point is well worth it. I am so impressed with this pillow that I plan to purchase another one in the future.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
This is a high-quality, well-designed pillow that combines softness, comfort, and adjustability
Size: Queen (Pack of 1), Size: Queen (Pack of 1)
I purchased the DreamyBlue Signature Adjustable Pillow for my husband because he often experiences back discomfort, and many of the pillows we had previously would become flat and lose their support over time.
This pillow has exceeded our expectations. It is incredibly soft, comfortable, and comes with extra filling, which allows you to adjust the firmness to your personal preference. We really appreciated having that option.
Even after extended use, the pillow has maintained its shape much better than other pillows we've owned. It provides a plush, cozy feel while still offering good support. My husband finds it very comfortable, and it has quickly become his favorite pillow.
This is a high-quality, well-designed pillow that combines softness, comfort, and adjustability. I would definitely recommend it.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
Finally Found a Pillow Worth Keeping
Size: Queen (Pack of 1)
I genuinely feel like I’ve tried every pillow on the market. At one point, I thought Amazon was going to flag my account because I bought and returned so many pillows trying to find the right one.
This is the only pillow that made the cut.
The shredded memory foam filling makes a huge difference because the pillow is both soft and supportive, while still being adjustable to fit the way you sleep. It arrives extremely full and plush, and it even comes with an extra bag of fill, which honestly surprised me. I ended up removing about half of the filling to get it exactly how I wanted it.
I’m a side/stomach sleeper, which can make finding a good pillow difficult since most are either too thick or too flat. This one was perfect because I could shape it exactly how I sleep.
It stays cool throughout the night, has a slightly heavier premium feel, and feels much higher quality than most pillows I’ve tried. Super comfortable, supportive, and customizable.
I would absolutely recommend it and would definitely buy it again
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Reviewed in the United States on May 24, 2026
★★★★★ 4
A bit expensive
Size: Queen (Pack of 1)
Waited to give a review on this one because I needed several nights before I had any idea if it was as good as everyone says.
I've had a real problem finding pillows lately. Either they're too soft to provide support and I wake up with a stiff neck or they're too sturdy and I wake up with a stiff neck. Contour pillows have worked best for me, but they fall under the category of too sturdy. I also toss and turn too much at night, which means I always end up in an awkward position with contour pillows.
So I took a chance on an obscenely expensive pillow, and yes, that is the reason for one less star. I'd happily pay $70 for a pillow I thought was amazing and comfortable and perfect, but this one wasn't quite it. It IS comfortable. I have slept on it for a month now without it making my neck stiff, so it does actually provide a good balance between soft and sturdy. They make it easy to stuff the pillow to your preferred fluffiness and even provide extra stuffing if you need it, which adds to the degree of comfort.
While the pillow does provide good neck support, I toss and turn a bit trying to find a comfortable position when I first try to sleep. The stuffing within the pillow moves around at night, most notably shifting to the side and the pillow is notably flatter now than when I first purchased it. You can fluff it out, similarly to a down pillow, but it doesn't seem to retain its shape on its own. In some ways, that's good because what it does instead is try to retain a shape that fits you.
So yes, this is a really good pillow. One of the better ones you can buy. But it's really expensive for a pillow.
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Reviewed in the United States on May 13, 2026