★★★★★ 5
Perfect
Perfect fit on my gen 1 out drive
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Reviewed in the United States on December 21, 2024
LS 660 Lift Dual Valve Spring Kit - Factory LS Casting Cylinder Head
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
LS 660 Lift Dual Valve Spring Kit - Factory LS Casting Cylinder HeadDual Spring Kit for Factory GM Casting Cylinder. This kit is for a factory casting LS1, LS2, LS3, L92 with an OE style valve guide. Designed for 0. 500 valve guide utilizing the factory 8mm valve and valve locks. Specs: Rated Valve Lift 0. 660 inches Installed Height 1. 800 @ 166 lbs Spring Rate: 403# in Solid Height 1. 015 Spring OD 1. 310" Spring ID 0. 680" Kit includes: Dual Valve Springs Titanium Retainers Chrome Moly Spring Seats Valve Stem Seals
Quick Dispatch:
Your LS 660 Lift Dual Valve Spring Kit - Factory LS Casting Cylinder Head orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your LS 660 Lift Dual Valve Spring Kit - Factory LS Casting Cylinder Head ships.
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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.
- To process your return/exchange, please contact us at [email protected]
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4.8 ★★★★★
Based on 771 reviews
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Product Reviews
★★★★★ 5
Good quality
Oem fitment great quality vs oem
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 4, 2023
★★★★★ 5
Quality Wire.
Size: 2 Colors each 10FT, Style: 10AWG
I bought the wire to complete a wiring job on my Miata, great quality would recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Flexible, maybe not UV rated
Size: 2 Colors each 5FT, Style: 10AWG
This wire is extremely flexible. My only concern is that it may not withstand UV. Nowhere on the insulation does it indicate that it is for solar.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Nice
Size: 2 Colors each 5FT, Style: 10AWG
Great product and description is on point.
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Reviewed in the United States on May 18, 2026
