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Description
Male Union 3331838 for Cummins B5.9/B6.7/ISB/ISX EnginesCondition: New Original Note: This 100% Genuine part is non returnable and non exchangeable. Please verify the correct part number before purchasing, instead of solely relying on the model. Replacement part number: 3331838 Fit For Cummins Engine: B5. 9 GAS PLUS CM556, 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 B173B, B6. 7O
Condition:
New OriginalNote:
This 100% Genuine part is non-returnable and non-exchangeable. Please verify the correct part number before purchasing, instead of solely relying on the model.Replacement part number:
3331838Fit For Cummins Engine: B5.9 GAS PLUS CM556, 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 B173B, B6.7O CM3580 B193B, GTA38 G CMEICS G116C, HSK78G CM2358 K129G, ISB CM2150, ISB CM2150 E, ISB6.7 CM2250, ISB6.7 CM2350 B101, ISB6.7 CM2350 B103, ISBE4 CM850, ISC8.3 CM2250, ISL CM554, ISL CM850, ISM CM570/870, ISM CM875, ISM CM876, ISM CM876 E, ISV (Nissan), ISV5.0 CM3230 V104, ISX CM870, ISX CM871, ISX CM871 E, ISX12 CM2350 X102, ISX12 G CM2180 EJ, ISX12/ISX11.9 CM2250, ISX12N CM2380 X120B, ISX15 CM2250, ISX15 CM2350 X101, ISZ13 CM2150 SN, ISZ13 CM2150 Z105, ISZ13 CM2150 Z106B, KTA38GC CM558, L9 CM2350 L116B, QSB3.3 CM2150, QSB6.7 CM2250, QSB6.7 CM2250 B128, QSB6.7 CM2250 EC, QSB6.7 CM2350 B105, QSB6.7 CM2350 B112, QSB6.7 CM2350 B130, QSB6.7 CM2670 B170C, QSB6.7 CM850(CM2850), QSC8.3 CM850(CM2850), QSG12/X12 CM2350 G110, QSK19 CM2150 K139M, QSK19 CM2150 MCRS, QSK19 CM2350 K144G, QSK19 CM2450 K155G, QSK19 CM850 MCRS, QSK23 CM2350 K127, QSK23 CM500, QSK38 CM2150 K106, QSK38 CM2150 K142M, QSK38 CM2150 MCRS, QSK38 CM2150 MCRS G, QSK38 CM2150 MCRS M, QSK38 CM2350 K125, QSK38 CM2350 K138M, QSK38 CM850 MCRS, QSK38 G CM2358 K122, QSK45 CM500, QSK50 CM2150 K107, QSK50 CM2150 K140M, QSK50 CM2150 MCRS, QSK50 CM2150 MCRS G, QSK50 CM2150 MCRS M, QSK50 CM2350 K108, QSK50 CM2350 K130, QSK50 CM850 MCRS, QSK50 DF CM850/CM2150 MCRS, QSK60 CM2150 K132M, QSK60 CM2150 MCRS, QSK60 CM2150 MCRS G, QSK60 CM2150 MCRS M, QSK60 CM2350 K116, QSK60 CM2350 K117, QSK60 CM2350 K121, QSK60 CM2350 K135, QSK60 CM2350 K136, QSK60 CM2350 K149M, QSK60 CM500, QSK60 CM850 MCRS, QSK60G, QSK78 CM2250 K104, QSK78 CM2350 K126, QSK78 CM2350 K137, QSK78 CM500, QSK95 CM2350 K128M, QSN14 CM876 N103, QST30 CM2350 T101, QST30 CM552
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
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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]
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4.6 ★★★★★
Based on 1495 reviews
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Product Reviews
★★★★★ 5
Very comfortable
Color: Black
Very sturdy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
★★★★★ 5
Love this chair!!!
Color: Beige
This chair is soooo comfy and looks fabulous!!! It fits under my L-shaped desk perfectly even when I work in the corner section! It was super easy to put together as well!!!
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Love the design, comfort and ease
Color: Grey, Color: Grey
Assembly was a breeze with the Amazon Basics Ergonomic Executive Office Desk Chair. The instructions were clear and easy to follow, and I had the chair put together quickly without any hassle. This simple setup made the whole experience even more satisfying from the start.
In terms of comfort, the chair truly delivers. It provides excellent lumbar support, I assume it will make long hours at my desk much more enjoyable. The adjustable height feature lets me customize my seating position, and the flip-up armrests allow me to slide the chair neatly under my desk without worrying about damage.
Overall, I couldn’t be happier with my purchase. The chair looks stunning in my office and perfectly complements the decor. It combines style, comfort, and practicality at a fantastic value, and I highly recommend it to anyone looking to upgrade their office chair. I love you so much that I ordered another one for my husband’s desk.
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Reviewed in the United States on November 24, 2025
★★★★★ 5
Very comfortable
Color: Grey
I’m not sure if I am just transitioning from a very uncomfortable office chair, but this one is extremely comfortable. Very good dynamic lumbar support that reminds you that it’s there. Only cons would be a low back (I am 6’5”) but I’m not laying my head back anyways. Also the seat length is a touch short for me but standard size really. Great bang for buck with an open box deal. Easy to assemble. TBD on durability.
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Reviewed in the United States on June 10, 2026
★★★★★ 5
BUY this chair!!!!!
Color: Cream
After using this chair for about a month, I can confidently say that it's one of the most comfortable office chairs I've sat in for an extended period of time. Being in school and studying 8+ hours a day at my desk would normally make my back hurt in any other chair. Fortunately, after using this chair all day I have very very minimal back pain, if any at all (definitely due to previous injuries). The cushion on the back of the chair is extremely supportive and comfortable over all. Cannot say enough good things about this chair!!!! Definitely worth the price and easy to put together.
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Reviewed in the United States on May 31, 2026