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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
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For Your Every Summer RSVP, with Code: SUMMER15
Description
RV HP Z28 Valve Spring Set Chevrolet SBC 400 350 327 307 305 283 5.7L .500" LiftPN: ERV 943 16 Outside Diameter: 1. 260" Inside Diameter: 0. 785" Closed: 114 lbs. @ 1. 710" Open: 318 lbs. @1. 210" Coil Bind @: 1. 160" Spring Type: Single with damper Notes: Fits small block chevy engines from 1955 1993. Good for towing, rv, and mild camshaft applications with lifts up to . 500". Country Region of Manufacture: United States Interchange Part Number: rv 643 x, vs 739r, 212 1183, 160 1144hp Other Part Number: erv943 16 Fitment Type:
PN: ERV-943-16
Outside Diameter: 1.260"
Inside Diameter: 0.785"
Closed: 114 lbs. @ 1.710"
Open: 318 lbs. @1.210"
Coil Bind @: 1.160"
Spring Type: Single with damper
Notes: Fits small block chevy engines from 1955-1993. Good for towing, rv, and mild camshaft applications with lifts up to .500".
Country/Region of Manufacture: United States
Interchange Part Number: rv-643-x, vs-739r, 212-1183, 160-1144hp
Other Part Number: erv943-16
Fitment Type: Performance/Custom
Manufacturer Warranty: Yes
Manufacturer Part Number: ERV943, ERV943-16
Brand: Enginetech
MPN: ERV943
Type: Valve Spring Set
Items Included: Valve Spring
Performance Part: Yes
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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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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4.3 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 3
Does the job but dangerous to walk with!
Does the job but dangerous to walk with: foot is sliding inside the sock if the foot was treated with cream or lotion prior. It is uncomfortable to sleep with but a necessary hurdle to heal your heels!
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Reviewed in the United States on December 24, 2025
★★★★★ 4
Does the trick
Bought it with urea cream for my senior dad who was diabetes. Careful with it, it will tear
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Reviewed in the United States on April 6, 2026
★★★★★ 5
The really work!
Bought these or a friend with severely dry cracked feet. The change was significant and immediate. They wore them around the house for a day and that night they could already feel the difference.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Fabulously bizarre and effective
These silicone socks have to be the strangest item I have ever ordered from Amazon. However strange they are, I was pleasantly surprised with them.
My order came with two pairs, and I took one pair out to wash before use. I laughed at handling them then because they were a cross between hospital socks and leftover mannequin skin…trippy.
The socks dried fast, so I put on foot lotion and put the socks on. The socks are beige skin tones that cover the entire foot up to the ankle, basically booties.
The silicone is very soft and makes putting on and taking off the socks easy. They are also surprisingly easy to walk around in because the bottoms have grips, again, like hospital socks. I walked on tile, hardwood, and carpet with no slipping. The booties also stayed in place with no issues.
I was concerned my feet would sweat, but that didn't happen. I was able to wear them for 3 hours without sweaty feet.
When I took them off, my feet were a lot more soft than before or if I had used regular socks. For reference, my feet are not terrible, but the skin around my toes is dry and peeling from my picking(gross, I know).
The socks I got are a size large, which worried me because they are big, but the site said for my shoe size (9) that's what I should order, and they were right. They are the perfect size and stretchy for room.
I can't believe how cool and well-thought-out these socks are, on top of working. Honestly, these are among the top 20 favorite items I've ordered from Amazon. They may look incredibly strange, and they are, but they work wonders.
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Reviewed in the United States on June 5, 2025
★★★★★ 3
Not well made
I have used these for 2 weeks now and one of them has a hole in the sole...
I won't ever buy them again
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Reviewed in the United States on July 15, 2025
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