Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Cummins Diesel Engine Flywheel Housing P/N 3971630Condition: USED REBUILDABLE CORE The Cummins Flywheel Housing 3971630 is compatible with diesel engines 3. 8 4. 5 5. 9 and 6. 7 liter. It is a genuine part that is used for QSB6. 7 Cummins engines. The part comes with the OEM Part Numbers 3973063 4944346. All parts industrially cleaned and inspected for cracks and damage before shipping Part Number: 3971630 Manufacturer: CUMMINS Weight: lbs Additional Details: Genuine OEM Parts Please research ensure
Condition: USED/REBUILDABLE COREThe Cummins Flywheel Housing 3971630 is compatible with diesel engines 3.8 4.5 5.9 and 6.7 liter. It is a genuine part that is used for QSB6.7 Cummins engines. The part comes with the OEM Part Numbers 3973063 4944346.
Part Number: 3971630
Manufacturer: CUMMINS
Weight: lbs
Additional Details:
Genuine OEM Parts
Please research/ensure fitment of part to your specific vehicle before purchasing. Returns because of non-fitment are accepted with a re-stocking fee, however customer is responsible for return shipping.
Shipping:
If shipping outside the contiguous 48 states is required, reach out to [email protected] to confirm shipping details.
About Us:
Custard Core Supply provides the highest quality of new, new take off, used, and core parts. We provide a variety of gas and diesel parts to our customers. Based in Dallas, TX Custard Core Supply has been in business since 1998. If you do not see a product you are looking for on our page, please reach out!
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
4.4 ★★★★★
Based on 1062 reviews
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Product Reviews
★★★★★ 4
Fitment
Size: Queen (20" X 30"), Color: 04 - Black - Zipper, Number of Items: 2
Nice pillow cases, good construction and materials. But just a little short length wise. Very tight fit
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Reviewed in the United States on January 21, 2026
★★★★★ 5
Great pillowcase!
Size: Queen (20" X 30"), Color: 02 - White - Zipper, Number of Items: 2, Size: Queen (20" X 30"), Color: 02 - White - Zipper, Number of Items: 2
I bought these because they were recommended by my hairdresser for hair breakage. I love the zipper because the pillow can’t slip out. I will sy these do feel nice against the skin as well.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
Silky for your hair no frizz
Size: Queen (20" X 30"), Color: 09 - Blue - Zipper, Number of Items: 2
Great quality silky pillowcases for my curly hair , doesnt make your hair frizzy like cotton pillowcases , good communication with seller if needed, bought from this seller numerous times , lots of colors to choose from too, quick shipping .
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Feels heavenly
Size: King (20" X 36"), Color: 14 - Lavender - Zipper, Number of Items: 2
Literally just got it in the mail and fell in love. It's so soft and wasn't being harsh with my beard hair. Hopefully no more split ends! (Good hair protection!)
There was no odor to speak of and it fit my pillow perfectly, we got king size, (AKA good compatibility)
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Reviewed in the United States on April 10, 2026
★★★★★ 5
Super soft and worth it
Color: Light Grey, Size: 2 Pack King（20"X 36"）
Honestly really happy with these pillowcases. They feel super soft and cool when you sleep on them. My hair has been way less messy in the morning too. The quality actually feels pretty nice and the king size fit perfectly. Makes my bed feel a lot more comfortable and expensive looking. Definitely glad I bought them.
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Reviewed in the United States on May 6, 2026