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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
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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.
- 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.
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4.2 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 3
Not quite what I expected
Great price but the results, though they did improve the clarity, it was not the full results I HAD EXPECTED..
The foiled packages that had the oxidizer removal and ceramic clear coat were nearly dry when I opened them.
They should be made more wet when sealed and possibly better foil paqckaging.
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Reviewed in the United States on March 24, 2026
★★★★★ 1
Ruined my headlights! Big waste of money!
I decided to try this instead of soda bicarbonate and toothpaste to see if if would be oxidation cleared for longer. Big mistake, it made my headlights completely hazed making it even worst. Don’t waste your money on this or anything else. Soda bicarbonate and toothpaste is better and you can seal it with a lacquer or sealer. Big waste of money. Hopeflly I can fix them…😡
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Reviewed in the United States on February 5, 2025
★★★★★ 5
Resultado
Bueno, facil de usar
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Best product for headlight restoration.
This kit comes with everything that you need to restore dull and yellowed headlights to original shine. I have used other products in the past that were not as easy or effective. Customer service was wonderful. Highly recommend.
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Reviewed in the United States on September 20, 2025
★★★★★ 5
Great for many ways on my leather goods!
Size: 16 Fl Oz (Pack of 1)
This stuff got the smell out of a purse I bought that had a chemical smell online. I mean, I try to wash this person all kinds of stuff and couldn't get the stink out of it. I thought I was gonna have to throw it out. I bought this at the last attempt to fix it and it got rid of the smell! I also used it on all my leather shoes, and I cleaned my leather headboard. All shiny and moist now. I know this is for cars, but I don't have any leather seats in my cars. But everything I used it on is clean and smells better.
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Reviewed in the United States on May 2, 2026