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Ships within 48 hours · Estimated delivery Sep 19 - Sep 24
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For Your Every Summer RSVP, with Code: SUMMER15
Description
O Ring Seal 3949708 for Cummins 4B3.9, B6.7, ISB, ISX12, ISX15 EnginesReplacement part number: 3949708 Fit for Cummins Engine: 4B3. 9, B6. 7 CM2670 B153B, B6. 7 CM2670 B173B, HSK78G CM2358 K129G, ISB CM850, ISB6. 7 CM2250, ISC8. 3 CM2250, ISV5. 0 CM3230 V104, ISX CM871, ISX CM871 E, ISX12 CM2350 X102, ISX12 G CM2180 EJ, ISX12 CM2250, ISX11. 9 CM2250, ISX15 CM2250, ISX15 CM2350 X101, KTA19GC CM558, QSB6. 7 CM2670 B170C, QSK23 CM2350 K127, QSK23 CM500, QSK95 CM2350 K111, QSK95 CM2350 K113, QSK95 CM2350 K128M, QSK95 CM2350
Replacement part number:
3949708Fit for Cummins Engine:
4B3.9, B6.7 CM2670 B153B, B6.7 CM2670 B173B, HSK78G CM2358 K129G, ISB CM850, ISB6.7 CM2250, ISC8.3 CM2250, ISV5.0 CM3230 V104, ISX CM871, ISX CM871 E, ISX12 CM2350 X102, ISX12 G CM2180 EJ, ISX12 CM2250, ISX11.9 CM2250, ISX15 CM2250, ISX15 CM2350 X101, KTA19GC CM558, QSB6.7 CM2670 B170C, QSK23 CM2350 K127, QSK23 CM500, QSK95 CM2350 K111, QSK95 CM2350 K113, QSK95 CM2350 K128M, QSK95 CM2350 K143C, QSK95 CM2350 K147C, QSN14 CM876 N103, QSX11.9 CM2250 ECF, QSX15 CM2250, QSX15 CM2250 ECF, QSX15 CM2250 X115, QSX15 CM2350 X105, QSX15 CM2350 X106, QSX15 CM570, X15 CM2350 X116B, X15 CM2350 X125M, X15 CM2350 X130C, X15 CM2350 X139C, X15 CM2350 X140C
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.7 ★★★★★
Based on 25 reviews
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Product Reviews
★★★★★ 4
Great quality for price
Material Type: Recycled Polyester, Color: Red Stripe, Size: XX-Large
Very impressed with the shirt quality, especially for such a low price. Sizing is accurate.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
For work or casual wear, this polo is a great choice.
Material Type: Recycled Polyester, Color: Port Stripe, Size: X-Large
I really like this polo. I've been wearing it once a week or every other week since November. Its very comfortable and breathable. This polo feels like it should last a while. The fit is good. I typcally wear XL and this XL fits great. I've pruchased it in both burgundy and black so far. I definitely recommend this shirt. For work or casual wear, this will look good.
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Reviewed in the United States on January 11, 2026
★★★★★ 5
Great value: These are my go-to work from home shirt
Material Type: Recycled Polyester, Color: Blue, Size: X-Large
I’ve been pleasantly surprised by these shirts and wear them weekly for Zoom calls, since I’m still working from home these days. I figured at the price point it was worth trying them out, and now I’ve bought several in different colors. They aren’t super soft, but they are comfy and look nice. I’m 6’1” ~220 pounds, and the XL slim fit still has plenty of room. I imagine the regular cut is incredibly boxy and oversized. The difference between polyester vs recycled polyester is inconsequential.
I typically buy expensive golf shirts, and these definitely aren’t as nice. They are a fraction of the cost though and a great “beater” work shirt / hang out shirt. It’s nice wearing something that looks and feels decent, but if something happens to it, you can toss and it and pick up another for the cost of a chipotle burrito.
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Reviewed in the United States on May 29, 2022
★★★★★ 3
Great price, not great quality
Material Type: Recycled Polyester, Color: Black, Size: Small
Simple, straight forward all black polo. I am a size medium woman (with some room since I don't like form-fitting) and bought a men's small. Fits perfectly for my frame. Long enough to tuck in for my part-time extra weekend job uniform. Also suitable for the golf course. A little thin, and if you hold it up to light you can sort of see through it. *Not* flowy, soft and smooth fabric like a rash guard/sun shirt - more structured than that. But it's cool and does the job for the price under $10.
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Reviewed in the United States on August 13, 2024
★★★★★ 5
Recommend
Material Type: Recycled Polyester, Color: Dark Navy, Size: X-Large
Great fit, right price
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Reviewed in the United States on March 18, 2026