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Ships within 48 hours · Estimated delivery Jul 25 - Jul 30
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For Your Every Summer RSVP, with Code: SUMMER15
Description
Sinister Diesel Coolant Reservoir Cap 17-23 GM 6.6L Duramax L5PFrustrated by the fragile plastic reservoir cap on your Duramax? Time to bite the billet and upgrade to Sinister Diesel's billet cap. The Sinister Diesel Coolant Reservoir Cap for your L5P Duramax is a high quality replacement billet cap designed to replace your factory cap. Made from high strength billet aluminum, this cap is build to last and withstand the rigors of daily use. The cap is precision machined to fit perfectly and ensuring a tight and
Frustrated by the fragile plastic reservoir cap on your Duramax? Time to bite the billet and upgrade to Sinister Diesel's billet cap.
The Sinister Diesel Coolant Reservoir Cap for your L5P Duramax is a high-quality replacement billet cap designed to replace your factory cap. Made from high-strength billet aluminum, this cap is build to last and withstand the rigors of daily use.
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
4.2 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 5
Quality shelf
Love this shelf. Super easy to put together. Strong and sturdy. Used as open shelving in kitchen . Space saving and priced well. Several color options to choose looks like photo
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Reviewed in the United States on April 8, 2026
★★★★★ 4
Very sturdy!
Size: 31.5 Inch, Color: Rustic Brown
I absolutely love these shelves. They were easy to put together and hang up and they look fantastic. I ended up having to use extra boards to screw it to the wall just because of the location of the wall stud, but you can't notice it at all, really. They are pretty big , the picture doesn't do it justice. I'm very pleased with this purchase.
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Reviewed in the United States on March 25, 2024
★★★★★ 5
Perfect!
Really lovely and very sturdy! This was a great value.
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Good buy!
Size: 31.5 Inch, Color: Black Marble
Very cute, seems stable. Fairly easy to hang. Worked for what I wanted!
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Reviewed in the United States on January 27, 2026
★★★★★ 5
Beautiful Shelves.
Color: Brown, Size: 3Tier48in, Color: Brown, Size: 3Tier48in
Did not come with instructions but easy to assemble once you start putting together. Very sturdy and well made, real wood shelves, not too heavy but can definitely hold a decent amount of weight. The shelves themselves are rough (could have been sanded better) but where it’s for decor and not every day use, no one would ever know. I love it.
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Reviewed in the United States on May 27, 2025