Pay in installments of $32.50 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Sinister Diesel Coolant Reservoir Degas Cap for 20-23 Ford 6.7L PowerstrokeKeep your cooling system running at peak performance with the Sinister Diesel Coolant Reservoir (Degas) Cap. This premium aftermarket upgrade is compatible with Powerstroke engines from 2020+. Designed to deliver a superior seal compared to stock caps, this degas cap maintains optimal system pressure, ensuring your cooling system performance efficiently and reliably. Sinister's cap is thoroughly tested to meet or exceed the industry standard, built to
Keep your cooling system running at peak performance with the Sinister Diesel Coolant Reservoir (Degas) Cap. This premium aftermarket upgrade is compatible with Powerstroke engines from 2020+. Designed to deliver a superior seal compared to stock caps, this degas cap maintains optimal system pressure, ensuring your cooling system performance efficiently and reliably.Sinister's cap is thoroughly tested to meet or exceed the industry standard, built to reflect Sinister Diesel's commitment to superior quality and design and finished in Sinister Diesel's signature blue color.
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
4.3 ★★★★★
Based on 5 reviews
Sort
Product Reviews
★★★★★ 5
Comfortable and Warm!
Size: Large, Color: (390) Marine Od Green / Marine Od Green / Baroque Green
Not as well padded on the bottom as military issue but still a great sock!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2025
★★★★★ 5
Pricing and fir
Size: Large, Color: (499) Federal Tan / Federal Tan / Coyote
Great fit
pricing is fair
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 20, 2025
★★★★★ 5
Great fit
Size: Medium, Color: White
Perfect fit and they don't slide off the back of your ankle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
★★★★★ 5
Best socks!
Size: Medium, Color: Blue
I love these socks! They last for years and they fit so nicely on my feet. I love that I can wear the in tennis shoes or wool boots and they never move!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 21, 2025
★★★★★ 1
TOO SMALL
Size: Medium, Color: Blue
Nice socks, but they are way too small. Says they fit size 6 - 10. I kept 3 ( I wear size 8) and gave 3 to my daughter (size 8.5). We both agreed that they were just too small.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026