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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15
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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
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4.4 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Dog approved for fun, human approved for durability for the price.
Size: 8 Inch Diameter, Color: Orange
This has been my dogs favorite outdoor toy for years . I love these because they are durable and won't deflate when bitten or when carried around in their mouth.... no matter how many holes the dogs put in them. We leave these outside year round even in Minnesota winters. It is strong enough to hold up yet soft enough to be safe on their teeth. Now I do want to say although it is really durable it is not indescribable. IF you have a heavy chewer or a dog that loves to destroy toys, they would need supervision with this I think. My dogs don't try to chew this up but they do wear out over time. We replace it every 2 to 3 years on average. Definitely dog approved and recommended in my home, and human approved for cost and durability. I hope your dogs love it as much as mine do.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Best ball for dogs!
Size: 8 Inch Diameter, Color: Red
This is the best quality and long lasting ball for dogs. It's soft enough to kick and durable enough to where they can chew and chew and it will not lose It's shape. We play hardcore everyday for months and it holds up. Never have to worry about chunks falling off and peeling. Border Collie approved!! Also, $8 cheaper off amazon VS pet store or pet store website. You'll know when it has to be replaced once you have to manually re-inflate with your hands but thats after many many months.
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Reviewed in the United States on April 30, 2026
★★★★★ 4
GOOD BALL
Size: 6 Inch Diameter, Color: Apple Green
This is my second time buying this ball for my blue heeler, and it is easily his favorite toy. It is very sturdy, especially for hard-playing dogs, and handles rough outdoor play sessions effortlessly.
The design is brilliant because it does not go flat, yet my dog is still able to bite it and get a good grip on it. It’s the perfect combination of being tough but still flexible enough for a dog to enjoy carrying around. For comparison, our first ball finally stayed flat after a solid 2 months of non-stop, hardcore playing, which is a massive win compared to other toys he destroys in minutes.
If you have an active, high-energy dog that loves to play rough, this ball is highly recommended!
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Best Ball ever! Aussie is obsessed
Size: 6 Inch Diameter, Color: Orange
I will never buy any other ball!!!! I bought the 8 inch which my crazy Aussie liked. The 6 inch one he won't stop carrying it around. his face use to be so sad when he would pop other balls. This one deflates and fills back up instantly! He chases it and chews on it. We gone through a lot of balls, but this is going to be a staple in our house!
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Reviewed in the United States on June 5, 2026
★★★★★ 5
Great for crazy pups!
Size: 8 Inch Diameter, Color: Ocean Blue
Tough and fun! This is a great toy to keep in the yard for play. I have a heavy chewer. He can get a hold of it and carry it around but it doesn't pop. It is soft enough but also strong. My dog loves to herd it around. He loves it!
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Reviewed in the United States on May 19, 2026