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Description
30-Piece Hex Flange Screw 3900637 for Cummins 4B/6B/QSB EnginesReplacement part number: 3900637, J900637 Fit For Cummins Engine: 4B3. 9, 6B5. 9, 6C8. 3, B3. 3, 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, B5. 9 G, B5. 9 GAS PLUS CM556, B5. 9 LPG PLUS CM556, B6. 2 CM2670 B156B, B6. 7 CM2350 B135B, B6. 7 CM2350 B136C, B6. 7 CM2350 B148B, B6. 7 CM2350 B157C, B6. 7 CM2670
Replacement part number:
3900637, J900637Fit For Cummins Engine:
4B3.9, 6B5.9, 6C8.3, B3.3, 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, B5.9 G, B5.9 GAS PLUS CM556, B5.9 LPG PLUS CM556, B6.2 CM2670 B156B, B6.7 CM2350 B135B, B6.7 CM2350 B136C, B6.7 CM2350 B148B, B6.7 CM2350 B157C, B6.7 CM2670 B153B, B6.7 CM2670 B164C, B6.7 CM2670 B173B, B6.7 CM2670 B175G, B6.7 G CMOH6.0 B125, B7 CM2670 B165C, D4.0 CM2620 D103B, D4.5 CM2620 D104B, D6.7 CM2670 D102B, F3.8 CM2350 F128C, F3.8 CM2350 F132B, F3.8 CM2350 F133C, F3.8 CM2620 F137B, F3.8 CM2620 F144B, F4.5 CM2620 F139B, F4.5 CM2620 F146B, G5.9, G5.9 CM558, G8.3, GTA8.3 CM558, ISB (Chrysler), ISB CM2150, ISB CM550, ISB/ISD6.7 CM2150 SN, ISB/ISD6.7 CM2880 B126, ISB4.5 CM2350 B104, ISB5.9 CM2880 B149, ISB5.9G CM2180, ISB6.7 CM2250, ISB6.7 CM2350 B103, ISBE CM2150, ISBE CM800, ISBE4 CM850, ISC CM850, ISC8.3 CM2250, ISF3.8 CM2220, ISF3.8 CM2220 AN, ISF3.8 CM2220 F116, ISF3.8 CM2220 F134B, ISF4.5 CM2220 F123, ISG11 CM2880 G106, ISG11 CM2880 G108, ISG12 CM2880 G107, ISG12 CM2880 G109, ISG12 G CMOH6.0 G111, ISL G CM2180, ISL9 CM2150 SN, ISL9 CM2350 L101, ISM CM570, ISX CM570, ISX12 G CM2180 EJ, ISX15 CM2250, ISX15 CM2250 SN, ISX15 CM2350 X101, L9 CM2350 L120C, L9 CM2670 L128B, L9 CM2670 L135C, L9N CM2380 L130B, L9N CM2380 L142B, M11 CELECT PLUS, M8.5 CM2670 L152B, NH/NT 855, QSB3.3 CM2150, QSB3.9 30 CM550, QSB4.5 30 CM550, QSB4.5 CM2250 B131, QSB4.5 CM2250 EC, QSB4.5 CM2350 B106, QSB4.5 CM850(CM2850), QSB5.9 30 CM550, QSB5.9 44 CM550, QSB5.9 CM2880 B139, QSB5.9 CM550, QSB5.9 CM850, QSB6.7 CM2150 B109, QSB6.7 CM2250, QSB6.7 CM2250 B128, QSB6.7 CM2250 EC
Application:
Fit for CASE Tractor: 1550
Shipping Notes
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4.4 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 4
Great shoes!
Size: 18-24 Months Toddler, Color: Grey Leather
Love these shoes, only shoes I put my 15 month old in. However, they do run small. I bought 12-18 month size and my boy out grew them before 12 months old, I had to repurchase 18-24m to fit perfectly.
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Reviewed in the United States on November 8, 2025
★★★★★ 5
The BEST toddler shoe!!
Size: 18-24 Months Toddler, Color: Brooks Grey Leather
These shoes are 100% worth every penny. They are super easy to get on and off due to the fact that the tongue pulls back fully and they are flexible yet sturdy. They are excellent quality and have maintained great condition with my busy toddler at the park. The wide toe box provides great comfort for my little one’s wide feet. Buy the shoes!!!
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Reviewed in the United States on September 4, 2025
★★★★★ 1
Bummed they fell apart they are super cute
Size: 12-18 Months Toddler, Color: Raiden Camel Suede, Size: 12-18 Months Toddler, Color: Raiden Camel Suede
I’m so bummed because these shoes are so cute and highly rated but mine fell apart after only a few wears. They say light outdoor activities and I would assume they mean walking up and down the block in the neighborhood. My son is only 15 months old and doesn’t walk fast or far at all so it’s really disappointing they fell apart.
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Reviewed in the United States on February 1, 2026
★★★★★ 3
Fall apart easy
Size: 12-18 Months Toddler, Color: Navy Leather, Size: 12-18 Months Toddler, Color: Navy Leather
Stay on, easy to put on, but get scuffed easily. Velcro strap came apart and color came off of leather about 2 months of wear
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Reviewed in the United States on May 1, 2025
★★★★★ 5
Perfect!
Size: 12-18 Months Toddler, Color: Rina Pink Canvas
So cute!!!! I love how open the shoe can get to allow for easier ability to slide little fit in!
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Reviewed in the United States on April 10, 2026