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LS Dual Spring ID Locators, 1.250" OD X .655" Step X .506" Center Hole, Fits .500" Guides, SB1250, Set of 16

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Calculated at checkout

Product Description

Use on OEM LS Series Heads w/ .500" Guides

Valve Spring ID Locators for LS w/ Dual Spring


LS Series Chevrolet / GM engines using dual springs.


These ID Locators are Machined from Chrome Moly Steel bar stock then properly Heat Treated to resist wear.

Unlike cups which hold the spring from the outside diameter of the outer spring, ID locators hold the spring using the inside diameter of the inner spring.

Since ID locators have a smaller outside diameter, they are normally used in applications where cups are too large to fit the spring pad.

Most LS series engines don’t have enough room for cups hence the need for locators.

This size is for OE and select aftermarket heads with .500” OD valve guides.

Some aftermarket LS series heads have .562" guides and use a different size locator which we carry in another listing.



  • LS Series SB Chevrolet, using OEM heads w/ .500" Guides
  • GM 5.3, 5.7, 6.0 engines
  • Verify sizes before purchase



  • A- 1.250" Outside Diameter
  • B- .655” Centering Wall
  • C- .506" Center Hole Diameter
  • D- .195” Height
  • E- .060” Base Thickness
  • See Diagram at top of page
  • Quantity Included in purchase- Sixteen Locators.





Alex’s Parts, the smart choice in valve train parts.

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